甲基磺酰胺 、
6-((S)-2-carboxy-4,4-difluoro-pyrrolidin-1-ylmethyl)-4-(2-chloro-4-fluoro-phenyl)-2-thiazol-2-yl-1,4-dihydro-pyrimidine-5-carboxylic acid ethyl ester 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
二氯甲烷 为溶剂,
反应 3.0h,
以29%的产率得到ethyl 4-(2-chloro-4-fluorophenyl)-6-[[(2S)-4,4-difluoro-2-(methylsulfonylcarbamoyl)pyrrolidin-1-yl]methyl]-2-(1,3-thiazol-2-yl)-1,4-dihydropyrimidine-5-carboxylate