ethyl 5-aminothiophene-2-carboxylate 、
5-(3,4-dihydro-2H-quinolin-1-ylsulfonyl)-2-fluorobenzoic acid 在
N-甲基咪唑 、 N,N,N',N'-tetramethylchloroformamidinium hexafluorophosphate 作用下,
以
乙腈 为溶剂,
以66 %的产率得到ethyl5-(5-((3,4-dihydroquinolin-1(2H)-yl)sulfonyl)-2-fluorobenzamido)thiophene-2 carboxylate