4-methoxy-2-(2-methylphenylamino)-6-benzoxazolylacetic acid 、
ethyl (R)-3-(4-aminophenyl)butanoate 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 在
N,N-二异丙基乙胺 作用下,
以
N-甲基乙酰胺 为溶剂,
生成
ethyl (R) 3-{4-[2-(4-methoxy-2-o-tolylaminobenzoxazol-6-yl)acetylamino]phenyl}butanoate