Selective protection of carbonyl compounds. Silica gel treated with thionyl chloride as an effective catalyst for thioacetalization

Y Kamitori, M Hojo, R Masuda, T Kimura…

文献索引：Kamitori, Yasuhiro; Hojo, Masaru; Masuda, Ryoichi; Kimura, Tadashi; Yoshida, Tatsushi Journal of Organic Chemistry, 1986 , vol. 51, # 9 p. 1427 - 1431

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被引用次数: 158

摘要

Silica gel treated with thionyl chloride was found to be an effective as well as highly selective catalyst for thioacetalization of aldehydes. With the use of this catalyst 1, 3-dithioranes and 1, 3-dithianes were obtained in excellent yields from various aldehydes. Under the same conditions ketones were similarly but more slowly thioketalized. This difference in reactivity between aldehydes and ketones was successfully utilized for the thioacetalization of ...