A Willgerodt–Kindler Type Selenation of Dihalomethane Derivatives, Chloroform, and Sodium Trichloroacetate by Treating with a Base, Elemental Selenium, and an Amine
作者:Kazuaki Shimada、Minoru Yamaguchi、Tohru Sasaki、Kenji Ohnishi、Yuji Takikawa
DOI:10.1246/bcsj.69.2235
日期:1996.8
Treatment of dihalomethane derivatives, chloroform, or sodium trichloroacetate with elemental selenium in the presence of NaH and an excess amount of an amine gave the corresponding selenoamides, selenoureas, and bis(selenocarbamoyl) triselenides in modest yields. These products were afforded from reactive intermediates related to “selenocarbonyl halides” and “selenophosgenoids” generated by the reaction of dichloromethanide ions and trichloromethanide ion with N-alkylated aminopolyselenide species (R2N–(Se)n−).
处理二溴甲烷衍生物、氯仿或三氯乙酸钠与元素硒,配合氢化钠和过量胺,在适当条件下可得到相应的硒酰胺、硒脲和双(硒氨基)三硒化物,产率适中。这些产品来源于与“硒羰基卤化物”和“硒羰基氟化物”相关的活性中间体,这些中间体是二氯甲烷离子和三氯甲烷离子与N-烷基化氨基多硒化物(R2N–(Se)n−)反应生成的。