4-methyl-2-(thiophene-2-carboxamido)-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carboxylic acid 、
二乙胺 在
N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成
N-[3-(diethylcarbamoyl)-4-methyl-4H,5H,6H-cyclopenta[b]thiophen-2-yl]thiophene-2-carboxamide