Work Experience
1. Indian Institute of Technology Madras, India
(a) Research Interests
Organometallic Chemistry for Polymer Synthesis and Catalysis, Homogeneous Catalysis, CO2 Sequestration, Chemical Process Development and Heterogeneous Catalysis
(b) Research Summary
In my independent career as an Academic Faculty, I have worked in a variety of research areas which include the applications of organometallic compounds of main-group and transition metals and simple metal salts as suitable catalysts for processes that include the following:
1. Transition metal organometallic compounds and metal salts were used as suitable catalysts for the ring-opening polymerization reaction of cyclic esters and lactides with the goal of understanding the relationships between the pendant ancillary ligand(s) on the metal center upon the polymerization behaviour and characteristics.
2. Metal-free ring-opening polymerization catalysts for cyclic esters and lactide polymerization using phosphorus(V) compounds.
3. Synthesis of new non-metallocene pre-catalysts for olefin polymerization.
4. Synthesis of catalysts for the ring-opening copolymerization reactions of epoxides with CO2 and anhydrides.
5. Demonstrated the use of simple metal salts as catalysts for various organic transformations.
2. Biocon India Limited, India
The primary work in research was to device a non-infringing process for the manufacture of Insulin per USFDA standards.
3. Piramal Healthcare Limited, India
Process development for the synthesis of active pharmaceutical ingredients like Ketoconazole, Fluconazole and CoQ10.
4. Colorado State University- Dow Chemical Company Midland MI, USA
Synthesis of new organometallic catalysts towards the polymerization of styrene, epoxides and lactides. Synthesis of new organometallic cocatalysts for olefin polymerization.
5. University of Idaho, USA
Gained rich experience in organofluorine chemistry.
Research Publications in Refereed International Journals
105. Iodine and alkali metal alkoxides: A simple and versatile catalyst system for fully alternating polyesters synthesis from phthalic anhydride and epoxides
Anjaneyulu Kummari, Sreenath Pappuru, Sourav Singha Roy, Debashis Chakraborty*
Polym. Chem. 2022, 13, 4684-4691.
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104. Decolorization and degradation of reactive orange 16 by Bacillus stratosphericus SCA1007
Kriti Akansha, Ajar Nath Yadav, Manish Kumar, Debashis Chakraborty, Shashwati Ghosh Sachan*
Folia Microbiologica 2022, 67, 91-102.
103. Determination of polylactide microstructure by homonuclear decoupled 1H NMR spectroscopy
Sourav Singha Roy, Sriparna Sarkar, Debashis Chakraborty*
Chem. Rec. 2021, 21, 1968-1984.
102. Homoleptic titanium and zirconium complexes exhibiting unusual Oiminol–metal coordination: application in stereoselective ring-opening polymerization of lactide
Sagnik K. Roymuhury, Mrinmay Mandal, Debashis Chakraborty*, Venkatachalam Ramkumar
Polym. Chem. 2021, 12, 3953-3967.
101. Benzoxazole phenoxide ligand supported group IV catalysts and their application for the ring-opening polymerization of rac-lactide and ε-caprolactone
Sreenath Pappuru, Venkatachalam Ramkumar, Debashis Chakraborty*
Polym Adv Technol. 2021, 32, 3392-3401.
100. Macrocycles in dual role: ancillary ligands in metal complexes and organocatalysts for the ring‑opening polymerization of lactide
Sourav Singha Roy, Sriparna Sarkar, Debashis Chakraborty* J. Incl. Phenom. Macrocycl. Chem. 2021, 100, 1-36.
99. Co2O3 and MnO2 as inexpensive catalysts for the ring‑opening polymerization of cyclic esters
Mrinmay Mandal*, Debashis Chakraborty*
J. Polym. Res. 2021, 28, 52-60.
98. Zirconium and hafnium complexes bearing Salen ligands for the polymerization of ethylene
Mrinmay Mandal*, Debashis Chakraborty*
Polym. Sci. Ser. B 2020, 62, 597-601.
97. Metal-free semi-aromatic polyester as nanodrug carrier: A novel tumor targeting drug delivery vehicle for potential clinical application
Piyush Kumar Gupta, Surya Kant Tripathi, Sreenath Pappuru, Siva Chander Chabattula, Kavitha Govarthanan, Santosh Gupta, Bijesh Kumar Biswal, Debashis Chakraborty, Rama Shanker Verma*
Mater. Sci. Eng. C 2020, 107, 110285-110296.
96. Salen complexes of zirconium and hafnium: synthesis, structural characterization and polymerization studies
Mrinmay Mandal, Venkatachalam Ramkumar, Debashis Chakraborty*
Polym. Chem. 2019, 10, 3444-3460. (Cover Page Article)
95. Metal-free Lewis pair catalyst synergy for fully alternating copolymerization of norbornene anhydride and epoxides: Biocompatible tests for derived polymers
Anjaneyulu Kummari, Sreenath Pappuru, Piyush Kumar Gupta, Debashis Chakraborty*, Rama Shanker Verma
Mater. Today Commun. 2019, 19, 306-314.
94. Decolorization and degradation of methyl orange by Bacillus stratosphericus SCA1007
Kriti Akansha, Debashis Chakraborty, Shashwati Ghosh Sachan*
Biocatal. Agric. Biotechnol. 2019, 18, 101044-101050.
93. Self-assembled dual-drug loaded core-shell nanoparticles based on metalfree fully alternating polyester for cancer theranostics
Piyush Kumar Gupta, Sreenath Pappuru, Santosh Gupta, Bamadeb Patra, Debashis Chakraborty*, Rama Shanker Verma*
Mater. Sci. Eng. C 2019, 101, 448-463.
92. Enhancing the anti-cancer therapeutic efficacy by optimizing molecular weight of metal-free fully alternating semi-aromatic polyester as nano-drug carriers
Piyush Kumar Gupta, Santosh Gupta, Sreenath Pappuru, Siva Chander Chabattula, Debashis Chakraborty, Rama Shanker Verma*
J Drug Deliv Sci Technol 2019, 51, 101-114.
91. Progress in metal-free cooperative catalysis for the ring-opening copolymerization of cyclic anhydrides and epoxides
Sreenath Pappuru, Debashis Chakraborty*
Eur. Polym J. 2019, 121, 109276-109287.
90. Fully alternating and regioselective ring-opening copolymerization of phthalic anhydride with epoxides using highly active metal-free Lewis pairs as a catalyst
Anjaneyulu Kummari, Sreenath Pappuru, Debashis Chakraborty*
Polym. Chem. 2018, 9, 4052-4062.
89. Group 4 metal complexes containing the salalen ligands: Synthesis, structural characterization and studies on the ROP of cyclic esters
Debashis Chakraborty*, Bijja Rajashekhar, Mrinmay Mandal, Venkatachalam Ramkumar
J. Organomet Chem. 2018, 871, 111-121.
88. Palladium complexes containing imino phenoxide ligands: synthesis, luminescence, and their use as catalysts for the ring-​opening polymerization of rac-​lactide
Mrinmay Mandal, Manuela List, Ian Teasdale, Guenther Redhammer, Debashis Chakraborty, Uwe Monkowius*
Monatsh Chem 2018, 149, 783-790.
87. Nb and Ta benzotriazole or benzoxazole phenoxide complexes as catalysts for the ring-opening polymerization of glycidol to synthesize hyperbranched polyglycerols
Sreenath Pappuru, Debashis Chakraborty*, Venkatachalam Ramkumar
Dalton Trans. 2017, 46, 16640-16654.
86. Homoleptic Zr and Hf Complexes of Imino/Bis(imino) phenoxide Scaffolds: Synthesis, Structural Characterization and Their Catalytic Activity in the ROP of Cyclic Esters
Bijja Rajashekhar, Mrinmay Mandal, Debashis Chakraborty*, Venkatachalam Ramkumar
ChemistrySelect 2017, 2, 8408-8417.
85. Synthesis and characterization of curcumin loaded PLA-Hyperbranched polyglycerol electrospun blend for wound dressing applications
Govindaraj Perumal, Sreenath Pappuru, Debashis Chakraborty*, A. Maya Nandkumar, Dillip Kumar Chand, Mukesh Doble*
Materials Science and Engineering C 2017, 76, 1196-1204.
84. Ring-opening copolymerization of maleic anhydride or L-Lactide with tert-butyl glycidyl ether by using efficient Ti and Zr benzoxazolesubstituted 8-Hydroxyquinolinate catalysts
Sreenath Pappuru, Debashis Chakraborty*, Venkatachalam Ramkumar, Dillip Kumar Chand*
Polymer 2017, 123, 267-281.
83. Synthesis and structural characterization of titanium and zirconium complexes containing half-salen ligands as catalysts for polymerization reactions
Mrinmay Mandal, Uwe Monkowius, Debashis Chakraborty*
New J. Chem. 2016, 40, 9824-9839.
82. Zwitterionic complexes of group 4 metal chlorides containing bis(imino)phenoxide scaffold: synthesis, characterization and polymerization studies
Debashis Chakraborty*, Eswara Rao Chokkapu, Mrinmay Mandal, Ravikumar R. Gowda, Venkatachalam Ramkumar
ChemistrySelect 2016, 1, 5218-5229.
81. Cadmium acetate as a ring opening polymerization catalyst for the polymerization of rac-​lactide, e-​caprolactone and as a precatalyst for the polymerization of ethylene
Mrinmay Mandal, Uwe Monkowius, Debashis Chakraborty*
J Polym Res 2016, 23, 220.
80. Copper(II) complexes with imino phenoxide ligands: synthesis, characterization, and their application as catalysts for the ring-​opening polymerization of rac-​lactide
Mrinmay Mandal, Kerstin Oppelt, Manuela List, Ian Teasdale, Debashis Chakraborty*,Uwe Monkowius*
Monatsh Chem 2016, 147, 1883-1892.
79. Group 4 alkoxide complexes containing [NNO]-type scaffold: synthesis, structural characterization and polymerization studies
Dipa Mandal, Debashis Chakraborty*, Venkatachalam Ramkumar, Dillip Kumar Chand*
RSC Adv. 2016, 6, 21706-21718.
78. Zwitterionic niobium and tantalum complexes with bidentate aminophenol scaffolds: synthesis, structural characterization and use in the ring opening polymerization of lactides
Sagnik K. Roymuhury, Debashis Chakraborty*, Venkatachalam Ramkumar
RSC Adv. 2016, 6, 48816-48826.
77. Group 4 complexes of salicylbenzoxazole ligands as effective catalysts for the ring-opening polymerization of lactides, epoxides and copolymerization of e-caprolactone with L-lactide
Sreenath Pappuru, Debashis Chakraborty*, J. Vijaya Sundar, Sagnik K. Roymuhury, Venkatachalam Ramkumar, Vinodh Subramanian,*, Dillip Kumar Chand*
Polymer 2016, 102, 231-247.
76. Group 4 complexes bearing bis(salphen) ligands: Synthesis, characterization and polymerization studies
Mrinmay Mandal, Debashis Chakraborty*
J. Polym. Sci. Part: A 2016, 54, 809-824.
75. Group 4 metal complexes of Trost’s semi-crown ligand: Synthesis, structural characterization and studies on the ring-opening polymerization of lactides and ε-caprolactone
Bijja Rajashekhar, Sagnik K. Roymuhury, Debashis Chakraborty,* Venkatachalam Ramkumar
Dalton Trans. 2015, 44, 16280-16293.
74. Aluminium complexes bearing N,O-aminophenol ligands as efficient catalysts for the ring opening polymerization of lactide
Sagnik K. Roymuhury, Debashis Chakraborty,* Venkatachalam Ramkumar
Eur. Polym. J. 2015, 70, 203-214.
73. Magnesium complexes of the N, O polydentate scaffold: synthesis, structural characterization and polymerization studies
Swarup Ghosh, P. K. S. Antharjanam, Debashis Chakraborty*
Polymer 2015, 70, 38-51.
72. Zwitterionic group 4 aminophenolate catalysts for the polymerization of lactides and ethylene
Sagnik K. Roymuhury, Debashis Chakraborty,* Venkatachalam Ramkumar
New J. Chem. 2015, 39, 5218-5230.
71. Synthesis and characterization of group 4 metal alkoxide complexes containing imine based bis-bidentate ligands: effective catalysts for the ring opening polymerization of lactides, epoxides and polymerization of ethylene
Sagnik K. Roymuhury, Debashis Chakraborty,* Venkatachalam Ramkumar
Dalton Trans. 2015, 44, 10352-10367.
70. Gallium and indium complexes containing the bis(imino)phenoxide ligand: synthesis, structural characterization and polymerization studies
Swarup Ghosh, Ravikumar R. Gowda, Rajamony Jagan, Debashis Chakraborty*
Dalton Trans. 2015, 44, 10410-10422.
69. Zr(IV) complexes containing salan-type ligands: Synthesis, structural characterization and role as catalysts towards the polymerization of e-caprolactone, rac-lactide, ethylene, homopolymerization and copolymerization of epoxides with CO2
Mrinmay Mandal, Debashis Chakraborty,* Venkatachalam Ramkumar
RSC Adv. 2015, 5, 28536-28553.
68. Imino(phenoxide) Compounds of Magnesium: Synthesis, Structural Characterization, and Polymerization Studies
Swarup Ghosh, Debashis Chakraborty,* Venkatachalam Ramkumar
J. Polym. Sci. Part: A 2015, 53, 1474-1491.
67. Kinetic investigation on the highly efficient and selective oxidation of sulfides to sulfoxides and sulfones with t-BuOOH catalyzed by La2O3
Mrinmay Mandal, Debashis Chakraborty*
RSC Adv. 2015, 5, 12111-12122.
66. Air-stable palladium(0) phosphine sulfide catalysts for Ullmann-type C-N and C-O coupling
Arpi Majumdar, Rigini Singh,* Mrinmay Mandal, T. Madhu Babu, Debashis Chakraborty*
J. Organomet Chem. 2015, 781, 23-34.
65. A new class of MPV type reduction in group 4 alkoxide complexes of salicylaldiminato ligands: Efficient catalysts for the ROP of lactides, epoxides and polymerization of ethylene
Debashis Chakraborty*, Dipa Mandal, Venkatachalam Ramkumar, V. Subramanian,* J. Vijaya Sundar
Polymer 2015, 56, 157-170.
64. Group 1 salts of the imino(phenoxide) scaffold: Synthesis, structural characterization and studies as catalysts towards the bulk ring opening polymerization of lactides
Swarup Ghosh, Debashis Chakraborty*, Babu Varghese
Eur. Polym. J. 2015, 62, 51-65.
63. 9-Fluorenemethanol: an internal electron donor to fine tune olefin polymerization activity
Edwin S. Gnanakumar, Eswara Rao Chokkapu, Shrikant Kunjir, T. G. Ajithkumar, P. R. Rajamohanan, Debashis Chakraborty, Chinnakonda S. Gopinath*
Dalton Trans. 2014, 43, 9143-9151.
62. Co(II) and Mn(II) catalyzed bulk ring-opening polymerization of cyclic esters
Bijja Rajashekhar, Debashis Chakraborty*
Polym Bull. 2014, 71, 2185-2203.
61. Group (IV) complexes containing the benzotriazole phenoxide ligand as catalysts for the ring-opening polymerization of lactides, epoxides and as precatalysts for the polymerization of ethylene
Sreenath Pappuru, Eswar Rao Chokkapu, Debashis Chakraborty*, Venkatachalam Ramkumar
Dalton Trans. 2013, 42, 16412-16427.
60. Silver nitrate catalyzed N-arylation of amines and O-arylations of phenols and alcohols
Rima Das, Mrinmay Mandal, Debashis Chakraborty*
Asian. J. Org. Chem. 2013, 2, 579-585.
59. BiCl3 catalyzed carbon-carbon cross-coupling of organoboronic acids with aryl iodides
Payal Malik, Desna Joseph, Debashis Chakraborty*
Appl. Organometal Chem. 2013, 27, 519-522.
58. Imino phenoxide complexes of Niobium and Tantalum as catalysts for the polymerization of lactides, e-caprolactone and ethylene
Tanmoy Kumar Saha, Mrinmay Mandal, Madhu Babu Thunga, Debashis Chakraborty*, Venkatachalam Ramkumar
Dalton Trans. 2013, 42, 10304-10314.
57. MgCl2·6CH3OH: A Simple Molecular adduct and its influence as Porous Support for Olefin Polymerization
Edwin S. Gnanakumar, Ravikumar K Gowda, Shrikant Kunjir, Thalasseril G. Ajithkumar, Pattuparambil, Ramanpillai Rajamohanan, Debashis Chakraborty, Chinnakonda S. Gopinath*
ACS Catal. 2013, 3, 303-311.
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56. Hydrogen phosphates: Self-initiated organocatalysts for the controlled ring-opening polymerization of cyclic esters
Payal Malik, Debashis Chakraborty*
Inorg. Chim Acta. 2013, 400, 32-41.
55. Imino phenoxide complexes of group 4 metals: synthesis, structural characterization and polymerization studies
Tanmoy Kumar Saha, Mrinmay Mandal, Debashis Chakraborty*, Venkatachalam Ramkumar
New. J. Chem. 2013, 37, 949-960.
54. Synthesis, structural and spectroscopic characterization of thiophosphorodiamidates and effect of ZnCl2 on the hydrolysis of the P–N bond
Payal Malik, Debashis Chakraborty*
Polyhedron 2013, 52, 831-836.
53. Catecholate complexes of zirconium: synthesis, spectroscopic characterization and polymerization studies
Tanmoy Kumar Saha, Debashis Chakraborty*
Polym. Intl. 2013, 62, 1507-1516.
52. AgOTf catalyzed hydration of terminal alkynes
Rima Das, Debashis Chakraborty*
Appl. Organomet Chem. 2012, 26, 722-726.
51. MgCl2·6C6H11OH: A High Mileage Porous Support for Ziegler−Natta Catalyst
Edwin S. Gnanakumar, K. S. Thushara, Ravikumar R. Gowda, Sumesh K. Raman, T. G. Ajithkumar, P. R. Rajamohanan, Debashis Chakraborty, Chinnakonda S. Gopinath*
J. Phys. Chem. C 2012, 116, 24115-24122.
50. La2O3 catalyzed C–C coupling of aryl iodides and boronic acids
Payal Malik, Debashis Chakraborty*
ISRN Organic Chemistry 2012, 1-5.
49. Silver catalyzed C–C and C–S coupling of aryl halides and thiols with boronic acids
Rima Das, Debashis Chakraborty*
Tetrahedron Lett. 2012, 53, 7023-7027.
48. Bi2O3 catalyzed asymmetric oxidation of sulfides
Payal Malik, Debashis Chakraborty*
Tetrahedron Lett. 2012, 53, 5652-5655.
47. I2-TEMPO as an efficient oxidizing agent for the one-pot conversion of alcohol to amide using FeCl3 as catalyst
Rima Das, Debashis Chakraborty*
Catal Commun. 2012, 26, 48-53.
46. Bi(III) catalyzed C-S cross-coupling reaction
Payal Malik, Debashis Chakraborty*
Appl. Organomet Chem. 2012, 26, 557-561.
45. AgOTf catalyzed transesterification of β-ketoesters
Rima Das, Debashis Chakraborty*
Appl. Organomet Chem. 2012, 26, 140-144.
44. A new methodology for the oxidation of sulfides with Fe(III) catalysts
Debashis Chakraborty*, Payal Malik, Vinod Kumar Goda
Appl. Organomet Chem. 2012, 26, 21-26.
43. Alkoxides of group 4 metals containing the bis(imino)phenoxide ligand: synthesis, structural characterization and polymerization studies
Tanmoy Kumar Saha, Bijja Rajashekhar, Debashis Chakraborty*
RSC Adv. 2012, 2, 307-318.
42. Ceric ammonium nitrate catalyzed Oxidation of Aldehydes and Alcohols
Ravikumar R. Gowda, Debashis Chakraborty*
Chinese. J. Chem. 2011, 29, 2379-2384.
41. 1,1'-Binaphthyl-2,2'-diyl benzylphosphoramidate
Ravikumar R. Gowda, Venkatachalam Ramkumar, Debashis Chakraborty*
Acta. Cryst. Sec E. 2011, E67, o3310-o3310.
40. Copper acetate catalyzed bulk ring opening polymerization of lactides
Ravikumar R. Gowda, Debashis Chakraborty*
J. Mol. Cat.: A 2011, 349, 86-93.
39. Controlled hydrolysis of [Ti(O–2,4,6-Br3C6H2)2(O-iPr)2]2: synthesis, structural characterization and studies on bulk polymerization of cyclic esters and lactide
Ravikumar R. Gowda, Debashis Chakraborty*, Venkatachalam Ramkumar
Inorg. Chem Commun. 2011, 14, 1777-1782.
38. Silver triflate catalyzed acetylation of alcohols, thiols, phenols and amines
Rima Das, Debashis Chakraborty*
Synthesis 2011, 1621-1625.
37. Fe(III) catalyzed synthesis of primary amides from aldehydes
Ravikumar R. Gowda, Debashis Chakraborty*
Eur. J. Org. Chem. 2011, 2226-2229.
36. Salen complexes of zirconium and hafnium: synthesis, structural characterization, controlled hydrolysis, and solvent-free ring-opening polymerization of cyclic esters and lactides
Tanmoy Kumar Saha, Venkatachalam Ramkumar, Debashis Chakraborty*
Inorg. Chem. 2011, 50, 2720-2722.
35. La2O3 catalyzed oxidation of alcohols
Ravikumar R. Gowda, Debashis Chakraborty*
Int. J. Org. Chem. 2011, 1, 41-46.
34. Phosphoroamidate compounds of 1,1'-Bi-2-napthol: synthesis, structural characterization and solvent-free ring-opening polymerization of E-caprolactone and L-lactide
Ravikumar R. Gowda, Debashis Chakraborty*, Venkatachalam Ramkumar
Inorg. Chim Acta. 2011, 372, 88-93.
33. Mohr’s salt catalyzed oxidation of aldehydes with t-BuOOH
Debashis Chakraborty*, Chandrima Majumder, Payal Malik
Appl. Organomet Chem. 2011, 25, 487-490.
32. Cu(II) bromide catalyzed oxidation of aldehydes and alcohols
Rima Das, Debashis Chakraborty*
Appl. Organomet Chem. 2011, 25, 437-442.
31. Silver nitrate catalyzed oxidation of sulfides
Rima Das, Debashis Chakraborty*
Synthesis 2011, 277-280.
30. Aryloxy and benzyloxy compounds of zirconium: Synthesis, structural characterization and studies on solvent-free ring-opening polymerization of E-caprolactone and d-valerolactone
Ravikumar R. Gowda, Debashis Chakraborty*, Venkatachalam Ramkumar
J. Organomet Chem. 2011, 696, 572-580.
29. Zinc acetate as a catalyst for the bulk ring opening polymerization of cyclic esters and lactide
Ravikumar R. Gowda, Debashis Chakraborty*
J. Mol. Cat.: A 2010, 333, 167-172.
28. p-Tolylmethanaminium cyclohexane-1,2-diyl phosphate
Ravikumar R. Gowda, Venkatachalam Ramkumar, Debashis Chakraborty*
Acta. Cryst. Sec E. 2010, E66, o3049-o3049.
27. Cu(II)-catalyzed oxidation of sulfides
Rima Das, Debashis Chakraborty*
Tetrahedron Lett. 2010, 51, 6255-6258.
26. Aryloxy and benzyloxy compounds of hafnium: Synthesis, structural characterization and studies on solvent-free ring-opening polymerization of E-caprolactone and d-valerolactone
Ravikumar R. Gowda, Debashis Chakraborty*, Venkatachalam Ramkumar
Polymer 2010, 51, 4750-4759.
25. Bi2O3 catalyzed oxidation of alcohols with t-BuOOH
Payal Malik, Debashis Chakraborty*
Synthesis 2010, 3736-3740.
24. Triethylammonium 1,1’-binaphthyl-2,2’-diyl phosphate
Ravikumar R. Gowda, Venkatachalam Ramkumar, Debashis Chakraborty*
Acta. Cryst. Sec E. 2010, E66, o1625-o1625.
23. Bi2O3 catalyzed oxidation of aldehydes using t-BuOOH
Payal Malik, Debashis Chakraborty*
Tetrahedron Lett. 2010, 51, 3521-3523.
22. Bis(imino)phenoxide complexes of zirconium: synthesis, structural characterization and solvent-free ring-opening polymerization of cyclic esters and lactide
Tanmoy Kumar Saha, Bijja Rajashekhar, Ravikumar R. Gowda, Venkatachalam Ramkumar, Debashis Chakraborty*
Dalton Trans. 2010, 39, 5091-5093.
21. New phosphoroamidate compounds: synthesis, structural characterization and studies on ZnCl2 assisted hydrolysis of the P-N bond
Payal Malik, Debashis Chakraborty*, Venkatachalam Ramkumar
Polyhedron 2010, 29, 2142-2148.
20. Silver nitrate-catalyzed oxidation of aldehydes to carboxylic acids by H2O2
Debashis Chakraborty*, Ravikumar R. Gowda, Payal Malik
Tetrahedron Lett. 2009, 50, 6553-6556.
19. New aryloxy and benzyloxy derivatives of titanium as catalysts for bulk ring-opening polymerization of E-caprolactone and δ-valerolactone
Ravikumar R. Gowda, Debashis Chakraborty*, Venkatachalam Ramkumar
Eur. J. Inorg. Chem. 2009, 2981-2993.
18. Environmentally benign process for bulk ring opening polymerization of lactones using iron and ruthenium chloride catalysts
Ravikumar R. Gowda, Debashis Chakraborty*
J. Mol. Cat.: A 2009, 301, 84-92.
Work highlighted in Nature India, 2009, March issue.
17. Tris(pentafluorophenyl)aluminum: Synthesis, Reactivity and Polymerization Studies
Debashis Chakraborty*
Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry 2007, 37, 685-695.
16. Catalytic ring-opening polymerization of propylene oxide by organoborane and aluminum Lewis acids
Debashis Chakraborty, Antonio Rodriguez, Eugene Y.-X. Chen*
Macromolecules 2003, 36, 5470-5481.
15. Chiral amido aluminum and zinc alkyls: a synthetic, structural, and polymerization study
Debashis Chakraborty, Eugene Y.-X. Chen*
Organometallics 2003, 22, 769-774.
14. First isolation and structural characterization of triarylaluminum-water and -methanol complexes
Debashis Chakraborty, Eugene Y.-X. Chen*
Organometallics 2003, 22, 207-210.
13. Chlorobis(pentafluorophenyl)alane: synthesis, crystal structure and polymerization studies
Debashis Chakraborty, Eugene Y.-X. Chen*
Inorg. Chem Commun. 2002, 5, 698-701.
12. Telechelic poly(e-caprolactone) and poly(lactic acid)s by chiral and achiral chelating diamide aluminum and zinc catalysts
Debashis Chakraborty, Eugene Y.-X. Chen*
Polymeric Materials Science and Engineering 2002, 86, 334-335.
11. Neutral, three-coordinate, chelating diamide aluminum complexes: catalysts/initiators for synthesis of telechelic oligomers and high polymers
Debashis Chakraborty, Eugene Y.-X. Chen*
Organometallics 2002, 21, 1438-1442.
10. Neutral olefin polymerization activators as highly active catalysts for ROP of heterocyclic monomers and for polymerization of styrene
Debashis Chakraborty, Eugene Y.-X. Chen*
Macromolecules, 2002, 35, 13-15.
9. Nucleophilic trifluoro- and difluoromethylations of substituted aromatic aldehydes with Ruppert’s and Deoxofluoro reagents
Singh, R. P., Chakraborty, D., Shreeve, J. M.*
J. Fluorine Chem. 2001, 111, 153-160.
8. Synthesis and structural characterization of functionalized dimeric aluminophosphonates and a monomeric gallophosphonate anion
Debashis Chakraborty, Sabine Horchler, Ralph Krätzner, Saji P. Varkey, Jiri Pinkas, Herbert W. Roesky*, Isabel Usón, Mathias Noltemeyer, Hans-Georg Schmidt
Inorg. Chem. 2001, 40, 2620-2624.
7. Application of n-Bu4NHF2 as a fluorinating agent for the preparation of fluoroanions: synthesis and crystal structure of the anions [t-BuPO3AlF2]22-, [PhPO3AlF2]22-, and [(O-i-Pr)3Ti(m-F)2(m-O-i-Pr)Ti(O-i-Pr)3]-
Debashis Chakraborty, Sabine Horchler, Herbert W. Roesky*, Mathias Noltemeyer, Hans-Georg Schmidt
Inorg. Chem. 2000, 39, 3995-3998.
6. Synthesis and structure of organic-soluble binuclear molecular phosphonates of tantalum, molybdenum and tungsten
Olexandr I. Guzyr, Rolf Siefken, Debashis Chakraborty, Herbert W. Roesky*, Markus Teichert
Inorg. Chem. 2000, 39, 1680-1683.
5. Metal alkoxides as versatile precursors for group 4 phosphonates: synthesis and X-ray structure of a novel zirconium phosphonate
Debashis Chakraborty, Vadapalli Chandrasekhar, Manish Bhattacharjee, Ralph Krätzner, Herbert W. Roesky*, Mathias Noltemeyer, Hans-Georg Schmidt
Inorg. Chem. 2000, 39, 23-26.
4. Synthesis and structural characterization of the first organosoluble mononuclear siloxane and silylamide of molybdenum and tungsten
Rolf Siefken, Markus Teichert, Debashis Chakraborty, Herbert W. Roesky*
Organometallics 1999, 18, 2321-2325.
3. Reactions of trialkyl phosphates with trialkyls of aluminum and gallium: new route to alumino- and gallophosphate compounds via dealkylsilylation
Jiri Pinkas, Debashis Chakraborty, Yu Yang, Ramaswamy Murugavel, Mathias Noltemeyer, Herbert W. Roesky*
Organometallics 1999, 18, 523-528.
2. First structurally characterized organometallic chloro oxo-peroxo compounds of molybdenum and tungsten
Debashis Chakraborty, Manish Bhattacharjee, Ralph Krätzner, Rolf Siefken, Herbert W. Roesky*, Isabel Usón, Hans-Georg Schmidt
Organometallics 1999, 18, 106-108.
1. Novel organic-soluble molecular titanophosphonates with cage-structures comparable to titanium-containing silicates
Mrinalini G. Walawalkar, Sabine Horchler, Stefan Dietrich, Debashis Chakraborty, Herbert W. Roesky*, Martina Schäfer, Hans-Georg Schmidt, George M. Sheldrick, Ramaswamy Murugavel
Organometallics 1998, 17, 2865-2868.
List Patents
12. Metal-free polyester based nano-drug carrier
11. Metal-free approach and method for synthesis of polyesters
10. Catalysts for Poly(lactide) synthesis and uses thereof
9. A process for the preparation of biopolymers
8. Catalysts for poly(lactide) synthesis and uses thereof
7. Catalysts for poly(lactide) synthesis and uses thereof
6. Metal free catalysts for the ring opening polymerization of cyclic esters and lactide
5. Metal free catalysts for the ring opening polymerization of cyclic esters and lactide
4. Group 4 metal aryloxy compounds
3. Group 4 metal aryloxy compounds used as polymerization catalyst in lactide polymerization
2. A method for synthesis of polymers and copolymers
1. Polymerization Process Using a Highly Active Catalyst