Tetrahedron Letters

Preparation of alkenyl sulfides and enamines by alkylidenation of carboxylic acid derivatives

K Takai, O Fujimura, Y Kataoka, K Utimoto

文献索引：Takai, Kazuhiko; Fujimura, Osamu; Kataoka, Yasutaka; Utimoto, Kiitiro Tetrahedron Letters, 1989 , vol. 30, # 2 p. 211 - 214

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被引用次数: 44

摘要

Abstract Treatment of S-alkyl thioesters with a reagent prepared from RCHBr 2, Zn, TiCl 4, and TMEDA in THF at 25 C gives Z-alkenyl sulfides selectively in good to excellent yields. Using the alkylidenation method, ketene dithioacetals and enamines are produced from 1, 3- dithian-2-one and amides, respectively.