Browsing by Author "Santra, S"

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    CuO Nanoparticles as a Simple and Efficient Green Catalyst for the Aziridine Ring-Opening: Examination of a Broad Range of Nucleophiles
    (Wiley-Blackwell, 2020) Chatterjee, R; Santra, S; Chakraborty, Ghosal N; Giri, K; Zyryanov, G.V; Majee, A.
    It has been observed that CuO nanoparticles act as effective and reusable catalyst for the ring-opening reaction of aziridines with a wide range of nucleophiles such as alcohols, thiols, and indoles. The catalytic activity has been tested in large scale reactions. The methodology is applicable in very low catalyst loading. The reaction proceeds under solvent-free conditions. The catalyst has been used for six consecutive cycles with comparable efficiency. The present methodology could be considered as environmentally benign as indicated by the calculation of E-factors which are very low in the range of 0.37-1.31. - 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
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    Synthesis and photophysics of new unsymmetrically substituted 5,5′-diaryl-2,2′-bypiridine-based “push-pull” fluorophores
    (Elsevier, 2019) Starnovskaya, E.S; Kopchuk ,D.S; Khasanov, A.F; Tanya, O.S; Santra, S; Giri, Kousik; Rahman, M; Kovalev, I.S; Zyryanov, G.V; Majee, A; Charushin, V.N.,
    New unsymmetrically substituted 5,5′-diaryl-2,2′-bypiridine “push-pull” fluorophores were prepared in good yields via the “1,2,4-triazine method”/Suzuki coupling reaction sequence. The obtained fluorophores contain the “push-pull” system with donor and acceptor moieties arranged in a D-π-A-π-D fashion, and that provides both the prospective photophysical properties and unique solvatocromic effects for the most representative compounds. © 2018 Elsevier Ltd