(2S,5R)-4-[3-(6-bromo-chroman-3-ylamino)-propyl]-2,5-dimethyl-piperazine-1-carboxyl ic acid tert-butyl ester 、
异氰酸- 3-氯-4-氟苯酯 以
二氯甲烷 为溶剂,
反应 16.0h,
以to give 0.047 g (29%) of (2S,5R)-4-{3-[1-(6-bromo-chroman-3-yl)-3-(3-chloro-4-fluoro-phenyl)-ureido]-propyl}-2,5-dimethyl-piperazine-1-carboxylic acid tert-butyl ester as a white solid的产率得到(2S,5R)-4-{3-[1-(6-bromo-chroman-3-yl)-3-(3-chloro-4-fluoro-phenyl)-ureido]-propyl}-2,5-dimethyl-piperazine-1-carboxylic acid tert-butyl ester