Reactions of 2-(trifluoromethyl)-2-hydroxy-2H-chromenes with thiophenols promoted by Lewis acid-Science-Chemical Encyclopedia-lookchem

Reactions of 2-(trifluoromethyl)-2-hydroxy-2H-chromenes with thiophenols promoted by Lewis acid
Add time:08/05/2019 Source:sciencedirect.com

A Lewis acid promoted nucleophilic substitution reaction between 2-(trifluoromethyl)-2-hydroxy-3-ethoxycarbonyl-2H-chromenes 1 and thiophenols affording thiophenyl substituted products, that is, 4-thiophenyl-2-trifluoromethyl-3-ethoxycarbonyl-4H-chromene and 2-thiophenyl-2-trifluoromethyl-3-ethoxycarbonyl-2H-chromene.

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