rac-5-chloro-thiophene-2-carboxylic acid (pyrrolidin-2-ylmethyl)-amide trifluoro acetate 、
2-fluoro-4-(2-oxo-2H-pyridin-1-yl)-benzoic acid 以to give rac-5-chloro-thiophene-2-carboxylic acid {1-[2-fluoro-4-(2-oxo-2H-pyridin-1-yl)-benzoyl]-pyrrolidin-2-ylmethyl}-amide的产率得到rac-5-chloro-thiophene-2-carboxylic acid {1-[2-fluoro-4-(2-oxo-2H-pyridin-1-yl)-benzoyl]-pyrrolidin-2-ylmethyl}-amide