Reaction of anions with activated olefins in the gas phase. A flowing afterglow-selected ion flow tube study
作者:Claude F. Bernasconi、Michael W. Stronach、Charles H. DePuy、Scott Gronert
DOI:10.1021/ja00181a003
日期:1990.12
Reactions of anions with acrylonitrile, acrolein, methyl vinyl ketone, and methyl acrylate at room temperature under SIFT conditions are described. Stabilized carbanions such as benzyl anion, cyanomethyl anion, cyclohexadienide, acetone enolate, and nitromethyl anion add to activated carbon-carbon double bonds in a process that is competitive with other modes of reaction. With acrylonitrile and methyl
描述了阴离子与丙烯腈、丙烯醛、甲基乙烯基酮和丙烯酸甲酯在室温下在 SIFT 条件下的反应。稳定的碳负离子,如苄基阴离子、氰甲基阴离子、环己二烯化物、丙酮烯醇化物和硝基甲基阴离子在与其他反应模式竞争的过程中添加到活性炭-碳双键上。对于丙烯腈和丙烯酸甲酯,以 1,4 或迈克尔方式加成,而对于丙烯醛和甲基乙烯基酮,1,2 加成与 1,4 加成完成。氢氧化物、甲醇盐、氟化物和氰化物不会通过任何一种方式添加到活化的烯烃中。提出了一种将氢化物从环己二烯转移到活化烯烃的机制