反应详情

Substantially the same procedure as in Example 219 was repeated using a starting material, 7-methoxybenzofuran-2-carboxylic acid, and 4-t-butylaniline to give N-(4-t-butylphenyl)-7-methoxybenzofuran-2-carboxamide (Compound 389a). Successively, it was formylated to give N-(4-t-butylphenyl)-4-formyl-7-methoxybenzofuran-2-carboxamide (Compound 389b), then compound 389b was reacted with cyclobutylamine to give compound 389 as a white solid.