Generation of Aziridinyllithiums from Sulfinylaziridines with tert-Butyllithium: Properties, Reactivity, and Application to a Synthesis of α,α-Dialkylamino Acid Esters and Amides Including an Optically Active Form
作者:Tsuyoshi Satoh、Masaki Ozawa、Koji Takano、Tosio Chyouma、Akihiro Okawa
DOI:10.1016/s0040-4020(00)00375-6
日期:2000.6
aziridinyllithiums having several alkyl groups were investigated. As an extension of this method, a synthesis of α,α-dialkylamino acid esters, including an optically active form, and amides was realized via the aziridinyllithiums. N-Non substituted α,α-dialkylamino acid esters were synthesized starting from N-(4-methoxyphenyl) aldimine.
在低温下,亚砜与叔丁基锂的亚砜-锂交换反应是由亚磺酰基氮丙啶生成的iri丙啶基锂。发现所生成的氮丙啶基锂在低于-30°C的THF中稳定,并且它们可与多种亲电试剂反应,如羰基化合物,氯甲酸乙酯和异氰酸苯酯。研究了具有几个烷基的叠氮基锂的反应性。作为该方法的扩展,通过叠氮基锂实现了包括旋光形式的α,α-二烷基氨基酸酯和酰胺的合成。N-非取代的α,α-二烷基氨基酸酯是从N-(4-甲氧基苯基)醛亚胺开始合成的。