2-(2-(4-(Tert-butoxycarbonyl)piperazin-1-yl)phenoxy)acetic acid 、
甲基磺酰胺 在
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,
以75%的产率得到tert-butyl 4-(2-(2-(methylsulfonamido)-2-oxoethoxy)phenyl)piperazine-1-carboxylate