The Condensation Reactions of Bivalent Sulfur Compounds-Copper(II) Complexes with Nucleophiles
作者:Teruaki Mukaiyama、Koichi Narasaka、Kazuo Maekawa、Hisao Hokonoki
DOI:10.1246/bcsj.43.2549
日期:1970.8
diethylmercaptal, benzophenone diethylmercaptole, ethyl orthotrithioformate and benzyl methylsulfide, react with copper(II) salts of 1,3-dicarbonyl compounds, active methylene compounds or anisole, in the presence of cupric chloride, to give condensation or substitution products in good yields accompanied with carbon-sulfur bond cleavage. On the other hand, in the absence of cupric chloride, the bivalent
发现二价硫化合物如苯甲醛二乙基硫醇、二苯甲酮二乙基硫醇、原三硫代甲酸乙酯和苄基甲硫醚在氯化铜存在下与1,3-二羰基化合物、活性亚甲基化合物或苯甲醚的铜(II)盐反应,以良好的收率得到缩合或取代产物,并伴有碳硫键断裂。另一方面,在不存在氯化铜的情况下,二价硫化合物不发生反应,原料被回收。这些结果可以通过假设从二价硫化合物和铜 (II) 初始形成活性络合物来解释。