A simple procedure for the synthesis of pyrrole-3,4-diacetic esters and N-derivatives thereof consists of the oxidative alkoxycarbonylation of dipropargylamine or N-derivatives to give 3,4-bis(alkoxycarbonylmethylene) pyrrolidines which can be easily isomerized to pyrrole-3,4-diacetic esters. Controlled hydrolysis of these esters affords pyrrolidine-3,4-diacetic acid.
合成
吡咯-3,4-二
乙酸酯及其N-衍
生物的简单程序包括
二炔丙胺或N-衍
生物的氧化烷氧基羰基化,得到3,4-双(烷氧基羰基亚甲基)
吡咯烷,其可以容易地异构化为
吡咯- 3,4-二
乙酸酯。这些酯的受控
水解得到
吡咯烷-3,4-二
乙酸。