反应详情

3.11 g (15 mmol) of 1-aminocyclohexanecarboxylic acid ethyl ester hydrochloride was used instead of 1-aminocyclohexanecarboxylic acid methyl ester hydrochloride, and 2.43 g (15 mmol) of benzofuran-2-carboxylic acid was used instead of 3-furancarboxylic acid in the process according to Reference Example 15 to obtain 3.80 g (80%) of the title compound.