From IIT Kharagpur


27. Rh(III)-Catalyzed Direct C8-Arylation of Quinoline N-Oxides using Diazonaphthalen-2(1H)-ones: A Practical Approach towards 8-azaBINOL

B. Ghosh, A. Biswas, S. Chakraborty and R. Samanta* [Chem Asian J 2018, DOI: 10.1002/asia.201800462]

"Invited Article" for a special issue on "Homogeneous Catalysis from Young Investigators in Asia".


26. Rhodium(III)-Catalyzed Regioselective Direct C4-Alkylation and C2-Annulation of Indoles: Straightforward Access to Indolopyridone

A. Biswas and R. Samanta* [Eur. J. Org. Chem. 2018, 2018, 1426-1436.]


25. Iridium(III) Catalyzed Regiocontrolled Direct Amidation of Isoquinolones and Pyridones

D. Das and R. Samanta* [Adv. Synth & Catal. 2018, 360, 379-384.]


24. Regiocontrolled Direct C4 and C2-Methyl Thiolation of Indoles under Rhodium Catalyzed Mild Conditions

S. Maity+, U. Karmakar+ and R. Samanta* [Chem. Commun. 2017, 53, 12197-12200.] (+contributed equally)]

23. A Mild Rhodium Catalyzed Direct Synthesis of Quinolones from Pyridones: Application in the Detection of Nitroaromatics

A. Biswas, D. Giri, D. Das, A. Dey, S. K. Patra* and R. Samanta* (J. Org. Chem. 2017, 82, 10989-10996.)


22. Copper Catalyzed Direct, Regioselective Arylamination of N-Oxides: Studies to Access Conjugated π-Systems

A. Biswas, U. Karmakar, S. Nandi and R. Samanta* (J. Org. Chem. 2017, 82, 8933-8942.)


21. Iridium Catalysed Cascade Synthesis of Oxindoles using Diazo Compound: A Quick Entry to the C7-Functionalized Oxindoles 

U. Karmakar, D. Das, and R. Samanta* (Eur. J. Org. Chem. 2017, 2017, 2780-2788.)

20. Rhodium(III)-Catalyzed C6-Selective Arylation of 2-Pyridones and Related Heterocycles Using Quinone Diazides: Syntheses of Hetero-Arylated Phenols 

D. Das, P. Poddar, S. Maity, and R. Samanta* (J. Org. Chem. 2017, 82, 3612-3621.)


19. Copper Catalyzed Regioselective Cascade Alkylation and Cyclocondensation of Quinoline N-Oxides with Diazo esters:  Direct Access to conjugated π-Systems

A. Biswas, U. Karmakar, A. Pal, and R. Samanta* (Chem. Eur. J. 2016, 22, 13826-13830.)


18. C6-Selective Direct Alkylation of Pyridones with Diazo Compounds under Rh(III)-Catalyzed Mild Conditions

D. Das, A. Biswas, U. Karmakar, S. Chand, and R. Samanta* (J. Org. Chem. 2016, 81, 842-848.)



From Postdoc & PhD


Oxidative Regioselective Amination of Chromones Exposes Potent Inhibitors of Hedgehog Signaling Pathway
R. Samanta, R. Narayan, J. O. Bauer, C. Strohmann, S. Sievers, A.P. Antonchick*
Chem. Commun. 2015, 51, 925-928.


Rhodium(III)-Catalyzed Direct Regioselective Synthesis of 7-Substituted Indoles
Z. Song,  R. Samanta,  A.P. Antonchick*
Org. Lett, 2013, 15, 5662-5665.


Metal-Free Oxidative Carbon-Heteroatom Bond Formation Through C–H Bond Functionalization. (Invited Minireview)
R. Samanta,  K. Matcha,  A.P. Antonchick*
Eur. J. Org. Chem., 2013, 5769-5804.
[One of the top 25 most accessed articles. Selected as free-access-review]


Rhodium(III)-Catalyzed Direct Oxidative Cross Coupling at the C5 Position of Chromones with Alkenes.
R. Samanta,  R. Narayan,  A.P. Antonchick*
Org. Lett. 2012, 14, 6108-6111.


Organocatalytic, Oxidative, Intermolecular Amination and Hydrazination of Simple Arenes at Ambient Temperature.
R. Samanta,  J.O. Bauer,  C. Strohmann,  A.P. Antonchick*
Org. Lett. 2012, 14, 5518-5521.
[One of the most read articles in 10/2012–11/2012]


Metal-free Direct Oxidative Intermolecular Diarylation of Anilides at Ambient Temperature Assisted by Cascade Selective Formation of C–C and C–N bonds.
R. Samanta,  J. Lategahn,  A.P. Antonchick*
Chem. Commun. 2012, 48, 3194-3196.


Metal-Free Electrocyclization at Ambient Temperature: Synthesis of 1-Arylcarbazoles.
R. Samanta,  K. Kulikov,  C. Strohmann, A.P. Antonchick*
(invited feature article) Synthesis 2012, 44, 2325-2332.
[One of the 10 most accessed articles in 8/2012]


Metal-Free Oxidative C-H Bond Amination at Ambient Temperature.
R. Samanta,  A.P. Antonchick*
(invited highlight) Synlett 2012, 809-813.
[One of the 10 most accessed articles in 3/2012–5/2012]


Organocatalytic, Oxidative, Intramolecular C-H Bond Amination and Metal-free Cross-Amination of Unactivated Arenes at Ambient Temperature

A. P. Antonchick*,  R. Samanta,  K. Kulikov,  J. Lategahn
Angew. Chem. Int. Ed. 2011, 50, 8605-8608.
Selected as “hot paper” by the editors. Highlighted in SYNFACTS (2011, 1129).
One of the most accessed articles in August, 2011 and one of the most accessed articles in first year after publication.


Palladium-Catalyzed Double C-H Activation Directed by Sulfoxides in the Synthesis of Dibenzothiophenes.
R. Samanta,   A. P. Antonchick*
Angew. Chem. Int. Ed. 2011, 50, 5217–5220. Highlighted in SYNFACTS (2011, 836).


A Stereoselective construction of quaternary chiral centers using Ti(III)-mediated opening of 2,3-epoxy alcohols: studies directed toward the synthesis of penifulvins
T. K. Chakraborty*, A. K. Chattopadhyay, R. Samanta, R. S. Ampapathi.
Tetrahedron Lett. 2010, 51, 4425-4428. [Cited in Organic Chemistry Highlights]


A radical mediated approach to the formal total synthesis of (+)-Sch 642305.
T. K. Chakraborty*, R. Samanta, P. Kiran Kumar
Tetrahedron 2009, 65, 6925-6931.


A 1:2 copper (II) – tripeptide complex for DNA binding and cleavage agent at physiological conditions.
P. R. Reddy*; P. Manjula; T. K.Chakraborty, R. Samanta.
Chemistry & Biodiver. 2009, 6, 764-773.


Ti(III)-mediated radical cyclization of β-aminoacrylate containing epoxy alcohol moieties: Synthesis of highly substituted azacycles.
T. K. Chakraborty*; R. Samanta; S. Roy, B. Sridhar
Tetrahedron Lett. 2009, 50, 3306-3310. [Cited in Organic Chemistry Highlights]


Studies on radical cyclization of 2,3- epoxy alcohols containing a β-(alkoxy)acrylate moiety using Cp2TiCl.
T. K. Chakraborty*; R. Samanta; K. Ravi kumar
Tetrahedron Lett.  2007, 48, 6389-6392.


Radical mediated opening of 2,3- epoxy alcohols using Cp2TiCl : Stereoselective construction of quaternary chiral centers.
T. K. Chakraborty*; R. Samanta; S. Das.
J. Org. Chem. 2006, 71, 3321-3324. [Cited in Organic Chemistry Highlights]


Total synthesis of  stevastelin B3.
T. K. Chakraborty*; S. Ghosh; P. Laxman; S. Dutta; R. Samanta.
Tetrahedron Lett.  2005, 46, 5447-5450. [Top 25 hottest articles, July-Sep.2005]