Subhrashis Banerjee

National Chemical Laboratory

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Kumar Vanka

National Chemical Laboratory

Rahul Banerjee

Indian Institute of Science Education and Research Kolkata

Saibal Bera

Polymat

Sushil Kumar

Khalifa University of Science and Technology

David Díaz Díaz

Universidad de La Laguna

Suvendu Karak

Indian Institute of Science Education and Research Kolkata

Amol B. Gade

Indian Institute of Integrative Medicine

Sharath Kandambeth

King Abdullah University of Science and Technology

Bishnu P. Biswal

National Institute of Science Education and Research

Sandeep Verma

University of Virginia

Cooperative Institutions

National Chemical Laboratory

Academy of Scientific and Innovative Research

Savitribai Phule Pune University

Indian Institute of Science Education and Research Pune

Council of Scientific and Industrial Research

Indian Institute of Science Education and Research, Tirupati

Indian Institute of Science Education and Research Kolkata

Indian Institute of Technology Bombay

Indian Institute of Science Bangalore

Indian Institute of Technology Kanpur

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CCDC 1528709: Experimental Crystal Structure Determination

The Cambridge Structural Database (2017)

Suvendu Karak Sushil Kumar Saibal Bera David Díaz Díaz Subhrashis Banerjee

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccdc.csd.cc1n9r6x

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CCDC 1848210: Experimental Crystal Structure Determination

The Cambridge Structural Database (2022)

Balu S. Navale Debasish Laha Subhrashis Banerjee Kumar Vanka Ramakrishna G. Bhat

10.5517/ccdc.csd.cc2016pz

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CCDC 1835428: Experimental Crystal Structure Determination

The Cambridge Structural Database (2021)

Shiv Pal Nilanjana Sen Subhrashis Banerjee Neha Kathewad Kumar Vanka

10.5517/ccdc.csd.cc1zlxcv

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CCDC 1528713: Experimental Crystal Structure Determination

Suvendu Karak Sushil Kumar Saibal Bera David Díaz Díaz Subhrashis Banerjee

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B(C₆F₅)₃: Catalyst or Initiator? Insights from Computational Studies into Surrogate Silicon Chemistry

ACS Catalysis (2018)

Subhrashis Banerjee Kumar Vanka

One of the most promising recent developments in catalysis has been the use of the metal-free Lewis acid B(C6F5)3 as a catalyst for a range of different chemical transformations. Perhaps the most impressive achievement in this regard is the recently accomplished in situ generation of SiH4 from surrogates (Simonneau and Oestreich, Nat. Chem., 2015, 7, 816). However, what the current computational work, with density functional theory, reveals is that this process, in addition to being catalyzed by B(C6F5)3, is also significantly dominated by a series of autocatalytic reactions. The results are further corroborated by the use of the energetic span model, which shows that the turnover frequency is higher for the newly proposed autocatalytic pathway in comparison to the conventional B(C6F5)3-catalyzed pathway. The current work therefore provides interesting new insights into surrogate silicon chemistry. But, more importantly, the current studies indicate that B(C6F5)3 is likely to function more as an initiator rather than a pure catalyst in many metal-free transformations that have been reported to date.

Autocatalysis

Autocatalytic reaction

10.1021/acscatal.7b04489

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CCDC 1443552: Experimental Crystal Structure Determination

The Cambridge Structural Database (2016)

Shouvik Mitra Sharath Kandambeth Bishnu P. Biswal Abdul Khayum Mohammed C. Choudhury

10.5517/ccdc.csd.cc1kg46c

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Self-Exfoliated Guanidinium-Based Ionic Covalent Organic Nanosheets (iCONs)

Journal of the American Chemical Society (2016)

Shouvik Mitra Sharath Kandambeth Bishnu P. Biswal Abdul Khayum Mohammed C. Choudhury

Covalent organic nanosheets (CONs) have emerged as functional two-dimensional materials for versatile applications. Although π–π stacking between layers, hydrolytic instability, possible restacking prevents their exfoliation on to few thin layered CONs from crystalline porous polymers. We anticipated rational designing of a structure by intrinsic ionic linker could be the solution to produce self-exfoliated CONs without external stimuli. In an attempt to address this issue, we have synthesized three self-exfoliated guanidinium halide based ionic covalent organic nanosheets (iCONs) with antimicrobial property. Self-exfoliation phenomenon has been supported by molecular dynamics (MD) simulation as well. Intrinsic ionic guanidinium unit plays the pivotal role for both self-exfoliation and antibacterial property against both Gram-positive and Gram-negative bacteria. Using such iCONs, we have devised a mixed matrix membrane which could be useful for antimicrobial coatings with plausible medical benefits.

Exfoliation joint

10.1021/jacs.5b13533

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Catalytic Enantioselective 1,3‐Alkyl Shift in Alkyl Aryl Ethers: Efficient Synthesis of Optically Active 3,3′‐Diaryloxindoles

Angewandte Chemie (2018)

Amol B. Gade Pradip N. Bagle Popat S. Shinde Vipin Bhardwaj Subhrashis Banerjee

Abstract Reported is the first organocatalytic asymmetric 1,3‐alkyl shift in alkyl aryl ethers for the synthesis of chiral 3,3′‐diaryloxindoles using a chiral Brønsted acid catalyst. Preliminary results showed that each enantiomer of the 3,3′‐diaryloxindole, and a racemic mixture, showed different antiproliferative activities against HeLa cell lines by using an MTT assay.

HeLa

Enantiomeric excess

10.1002/ange.201801650

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[3+2]-Annulation of platinum-bound azomethine ylides with distal CC bonds of N-allenamides

Chemical Communications (2016)

Indradweep Chakrabarty Suleman M. Inamdar Manjur O. Akram Amol B. Gade Subhrashis Banerjee

A Pt-catalyzed, highly regioselective reaction between N-allenamides and imino-alkynes leading to pyrrolo[1,2-a]indoles is described. This represents the first example of [3+2]-annulation of Pt-bound azomethine ylides with the distal C[double bond, length as m-dash]C bond of N-allenamides. The mechanism of the reaction was established by computational studies.

Annulation

10.1039/c6cc07874e

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CCDC 1528715: Experimental Crystal Structure Determination

Suvendu Karak Sushil Kumar Saibal Bera David Díaz Díaz Subhrashis Banerjee

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