Formation of 1,3-Oxathiole-2-thione and 1,2,4-Trithiolane Derivatives by the Catalytic Reaction of α-Diazocarbonyl Compounds with Carbon Disulfide
作者:Toshikazu Ibata、Hirofumi Nakano
DOI:10.1246/bcsj.63.3096
日期:1990.11
The rhodium(II) acetate-catalyzed decomposition of α-diazocarbonyl compounds such as substituted α-diazoacetophenones, cyclic diazoketones, cyclic diazodiketones, and α-diazo-β-ketoesters in carbon disulfide gave 1,3-oxathiole-2-thione derivatives in good yields. Diazomalonates also gave alkyl 5-alkoxy-2-thioxo-1,3-oxathiole-4-carboxylates together with 3,5-bis[bis(alkoxycarbonyl)methylene]-1,2,4-trithiolanes
α-重氮羰基化合物如取代的 α-重氮苯乙酮、环状重氮酮、环状重氮二酮和 α-重氮-β-酮酯在二硫化碳中的乙酸铑 (II) 催化分解得到 1,3-oxathiole-2-thone 衍生物良好的收益。重氮丙二酸酯还与 3,5-双[双(烷氧基羰基)亚甲基]-1,2,4-三硫杂环戊烷一起得到烷基 5-烷氧基-2-硫代-1,3-oxathiole-4-carboxylates。1,3-oxathiole-2-thiones 的形成可以通过含有乙酸铑 (II) 的两性离子中间体的中介作用来解释,该中间体是通过二硫化碳与重氮羰基化合物催化分解中产生的酮类卡宾反应形成的。