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Issue 44, 2015
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Chlorosulfonic acid supported diethylamine ionic liquid catalyzed green synthesis of novel 2-mercaptonaphthalen-1-yl)methyl)-3-hydroxy-5,5-dimethylcyclohex-2-enones under neat conditions

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Abstract

Chlorosulfonic acid supported diethylamine ionic liquid (DEACSA IL) was prepared and characterized by FT-IR, elemental analysis, NMR spectroscopy and thermogravimetric analysis. The DEACSA IL functions as an efficient heterogeneous, environmentally benign, and very active catalyst and can be recycled for several runs without any significant loss of activity with short reaction times, good to excellent yields of the desired products and high catalytic activity for the synthesis of a variety of novel 2-mercaptonaphthalen-1-yl)methyl)-3-hydroxy-5,5-dimethylcyclohex-2-enones under neat conditions. This is the first example of the condensation of naphthalene-2-thiol, aldehydes and 5,5-dimethylcyclohexane-1,3-dione to provide a novel series of thiol derivatives, which were characterized by 2D-NMR data.

Graphical abstract: Chlorosulfonic acid supported diethylamine ionic liquid catalyzed green synthesis of novel 2-mercaptonaphthalen-1-yl)methyl)-3-hydroxy-5,5-dimethylcyclohex-2-enones under neat conditions

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Article information


Submitted
11 Mar 2015
Accepted
01 Apr 2015
First published
01 Apr 2015

RSC Adv., 2015,5, 35267-35273
Article type
Paper
Author version available

Chlorosulfonic acid supported diethylamine ionic liquid catalyzed green synthesis of novel 2-mercaptonaphthalen-1-yl)methyl)-3-hydroxy-5,5-dimethylcyclohex-2-enones under neat conditions

M. V. Reddy, G. Chandra Sekhar Reddy, R. M. Naidu Kalla and Y. T. Jeong, RSC Adv., 2015, 5, 35267
DOI: 10.1039/C5RA04277A

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