(S)-N'-tert.-butoxycarbonyl-N-(2-amino-5-chloro)phenyl-3-(pyridin-4-yl)-alaninamide 、 (S)-N'-tert.-butoxycarbonyl-N-(2-amino-4-chloro)phenyl-3-(pyridin-4-yl)-alaninamide 以
溶剂黄146 为溶剂,
反应 1.0h,
以97%的产率得到(S)-N-tert.-butoxycarbonyl-1-(5-chloro-1H-benzoimidazol-2-yl)-2-(pyridin-4-yl)-ethylamine