Mechanochemical synthesis and cycloaddition reactions of fluoro nitrone under solvent‐free conditions and potential antimicrobial activities of the cycloadducts
作者:Bhaskar Chakraborty
DOI:10.1002/jhet.3736
日期:2019.12
Synthesis and cycloaddition reactions of fluoro nitrone under solvent‐free conditions using ball‐milling technique have been reported. Significant change in rate and yields of the cycloadducts have been noticed compared with solvent‐free microwave‐induced reactions of fluoro nitrones. The present study reports synthesis of N‐benzyl fluoro nitrone and its cycloaddition reactions with maleimides and
An efficient ecofriendly protocol for the synthesis of novel fluoro isoxazoline and isoxazolidines using N-benzyl fluoro nitrone via cycloaddition reactions
作者:Bhaskar Chakraborty、Govinda Prasad Luitel
DOI:10.1016/j.tetlet.2012.11.111
日期:2013.2
1-Butyl-3-methylimidazolium based ionic liquids are found to accelerate significantly the intermolecular 1,3-dipolar cycloaddition of N-benzyl fluoro nitrones derived in situ from aldehydes and benzylhydroxylamine, with electron deficient alkynes to afford enhanced rates and improved yields of isoxazolines while with enals exclusively endo isoxazolidines are obtained with high selectivity. Synthetic potentiality of the novel isoxazolines and nitrones has also been tested successfully. (C) 2012 Elsevier Ltd. All rights reserved.