Dihydro-1H-pyrrolizine-3,5-(2H,6H)-dione is produced in higher overall yield in a process which comprises catalytically hydrogenating a lower alkyl ester of 4-(hydroxyimino)heptanedioic acid in the presence of a tri-(lower alkyl)amine, followed by cyclization of the product thus produced in the presence of a cyclizing agent such as acetic anhydride.
二氢-1H-
吡咯烷-3,5-(2H,6H)-二酮的生产工艺包括在三(低级烷基)胺存在下催化氢化 4-(羟基亚
氨基)
庚二酸的低级烷基酯,然后在环化剂(如
乙酸酐)存在下环化由此产生的产物,总产率较高。