(S)-4-(2-(1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)phenyl)-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-2-carbonitrile 、
(rac)-3-(1-(tert-butoxycarbonyl)piperidin-3-yl)propiolic acid 在
pyridinium hydrogen bromide 、
盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下,
以
二氯甲烷 为溶剂,
以58 %的产率得到(4S)-4-(2-(1-ethyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)phenyl)-6-(3-(piperidin-3-yl)propioloyl)-4,5,6,7-tetrahydrothieno[2,3-c]pyridine-2-carbonitrile