(2R,5S)-1-[(tert-butoxy)carbonyl]-5-[2-(4-chloro-3-fluorophenoxy)acetamido]piperidine-2-carboxylic acid 、
(3,3,3-trifluoropropoxy)carbohydrazide 在
N,N-二异丙基乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 12.17h,
生成 tert-butyl (2R,5S)-5-[[2-(4-chloro-3-fluorophenoxy)acetyl]amino]-2-[(3,3,3-trifluoropropoxycarbonylamino)carbamoyl]piperidine-1-carboxylate