Here we demonstrate the synthesis of a novel chiral Co(iii)-salen complex supported functionalized 2D-hexagonal mesoporous silica material Co(iii)@AFS-1. This material has shown excellent catalytic activity for the regio- and enantioselective asymmetric ring opening (ARO) of terminal and meso epoxides using various aromatic as well as cyclic amines to produce chiral β-amino alcohols having very good enantioselectivities (ee > 99%) at ambient temperature under solvent-free neat conditions. © 2016 The Royal Society of Chemistry.

M M ISLAM

P BHANJA

M HALDER

S K KUNDU

A BHAUMIK

S M ISLAM

University of Calcutta (informally known as Calcutta University or CU) is a collegiate public state university located in Kolkata, West Bengal, India.&nbsp;Within India it is recognized as a &quot;Five-Star University&quot; and accredited &quot;A&quot; Grade by National Assessment and Accreditation Council.

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The University of Calcutta has secured the Fifth position among the Universities of India in the prestigious &quot;Indian University Ranking 2019&quot; list, released by the NIRF of the Ministry of Human Resource Development, Government of India.

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It was established on 24 January 1857, and was one of the first institutions in Asia to be established as a multidisciplinary and Western-style university. Its alumni and faculty include several heads of state, heads of government, social reformers, prominent artists, only academy award winner and Dirac medal winner in India, many Fellows of the Royal Society and five Nobel laureates as of 2019 which is highest in South Asia.

University Of Calcutta

RSC Advances

Designing novel catalytic system for efficient synthesis of enantiomerically pure β-hydroxy nitroalkanes is a challenging area of research. Herein, we have designed a chiral heterogeneous catalyst through the successful loading of chiral Cr(III)-salen complex over sulfonic acid functionalized SBA-15 material. The catalyst has been thoroughly characterized by powder XRD, N2 adsorption/desorption, XPS, HR-TEM, CHN, AAS analyses and FT-IR spectroscopy. The reactivity of the catalyst has been examined in the enantioselective Henry reaction, where different substituted aromatic, heteroaromatic as well as aliphatic aldehydes produced corresponding β-hydroxy nitroalkanes with excellent product yields (up to 90%) and enantioselectivities (up to 91%). Moreover, this protocol has also been employed as the key-step to prepare enantiomerically pure drug (R)-(-)-isoproterenol from 3,4-dimethoxybenzaldehyde. © 2019 Elsevier B.V.

Molecular Catalysis

Chiral Cr(III)-salen complex embedded over sulfonic acid functionalized mesoporous SBA-15 material as an efficient catalyst for the asymmetric Henry reaction

Dalton Transactions

Tungstic acid functionalized mesoporous SBA-15: A novel heterogeneous catalyst for facile one-pot synthesis of 2-amino-4H-chromenes in aqueous medium

Chemical Communications

One-pot thioetherification of aryl halides with thiourea and benzyl bromide in water catalyzed by Cu-grafted furfural imine-functionalized mesoporous SBA-15

Highly ordered acid functionalized SBA-15: a novel organocatalyst for the preparation of xanthenes

Journal of Solid State Chemistry

Highly ordered Ti-SBA-15: Efficient H2 adsorbent and photocatalyst for eco-toxic dye degradation

Nature

Ordered mesoporous molecular sieves synthesized by a liquid-crystal template mechanism

Chiral Co(III)-salen complex supported over highly ordered functionalized mesoporous silica for enantioselective aminolysis of racemic epoxides

Journal	Data powered by TypesetRSC Advances
Publisher	Data powered by TypesetRoyal Society of Chemistry
ISSN	2046-2069