(1R*,5S*)-3-(4-((S)-3-hydroxypyrrolidin-1-yl)phenyl)-8-azabicyclo[3.2.1]oct-2-ene-2,8-dicarboxylic acid 8-tert-butyl ester 2-methyl ester 、
2,6-二氯对甲酚 在
三丁基膦 、
1,1'-azodicarbonyl-dipiperidine 作用下,
以
甲苯 为溶剂,
反应 1.0h,
生成 (1S,5R)-3-(4-((R)-3-(2,6-dichloro-4-methylphenoxy)pyrrolidin-1-yl)phenyl)-8-azabicyclo[3.2.1]oct-2-ene-2,8-dicarboxylic acid 8-tert-butyl ester 2-methyl ester 、 (1R,5S)-3-(4-((R)-3-(2,6-dichloro-4-methylphenoxy)pyrrolidin-1-yl)phenyl)-8-azabicyclo[3.2.1]oct-2-ene-2,8-dicarboxylic acid 8-tert-butyl ester 2-methyl ester