Tetrahedron

Monothioacetalization of acetals catalyzed by dicyanoketene acetals

T Miura, Y Masaki

文献索引：Miura, Tsuyoshi; Masaki, Yukio Tetrahedron, 1995 , vol. 51, # 38 p. 10477 - 10486

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被引用次数: 12

摘要

A type of capto-dative olefin, dicyanoketene acetal such as dicyanoketene dimethyl acetal and ethylene acetal is introduced to be a novel type of π-acid catalyst for the monothioacetalization of acetals as well as the corresponding α, β-unsaturated systems. Particularly, the catalytic activity of dicyanoketene ethylene acetal was found to be superior to that of tetracyanoethylene and highly chemoselective in the crossover reaction of a ...