Efficient synthesis of various atropisomeric amides in optically pure forms and their application to asymmetric reactions
作者:Osamu Kitagawa、Shu-ichi Momose、Yoshihisa Fushimi、Takeo Taguchi
DOI:10.1016/s0040-4039(99)01853-5
日期:1999.12
Various atropisomeric amides were prepared in optically pure forms (≥98% ee) through the optical resolution of the amide ester derived from (R)-pantolactone, N-allyl-ortho-tert-butylaniline and oxalyl chloride. Asymmetric carbonyl addition reaction of an alkyllithium and asymmetric iodolactonization with these atropisomeric amides proceeded with high stereoselectivity.
通过衍生自(R)-泛内酯,N-烯丙基-邻叔丁基-苯胺和草酰氯的酰胺酯的旋光拆分,制备了各种光学异构形式的光学异构体酰胺(≥98%ee)。烷基锂的不对称羰基加成反应和这些阻转异构酰胺的不对称碘代内酯化以高立体选择性进行。