Benign methodology and improved synthesis of 5-(2-chloroquinolin-3-yl)-3-phenyl-4,5-dihydroisoxazoline using acetic acid aqueous solution under ultrasound irradiation
作者:Vandana Tiwari、Ali Parvez、Jyotsna Meshram
DOI:10.1016/j.ultsonch.2010.12.003
日期:2011.9
In the present paper, we have executed the synthesis of substituted 5-(2-chloroquinolin-3-yl)-3-pheny-14,5-dihydroisoxazolines via the reactions of substituted 3-(2-chloroquinolin-3-yl)-1-phenylprop-2-en-1-ones with hydroxylamine hydrochloride and sodium acetate in aqueous acetic acid solution in 72-90% yields at room temperature under ultrasound irradiation. This method provides several advantages such as operational simplicity, higher yield, safety and environment friendly protocol. The resulting substituted isoxazolines were characterized on the basis of H-1 NMR, C-13 NMR, IR, elemental analysis, and mass spectral data. (C) 2010 Elsevier B.V. All rights reserved.