6,7-Diacetamino1,4-benzodioxane-5-carboxylic acid 、
6,7-二氨基-2,3-二氢-1,4-苯并二氧杂环己烷-5-羧酸 、 1-Piperidinopropylamine 、 以The N-(1-piperidinopropyl)-6,7-diacetamino-1,4-benzodioxane-5-carboxamide was obtained (M.P.: above 260° C. with decomposition)的产率得到N-(1-piperidinopropyl)-6,7-diacetamino-1,4-benzodioxane-5-carboxamide