Electrochemically Promoted C-N Bond Formation from Acetylenic Amines and CO_2.Synthesis of 5-Methylene-l,3-oxazolidin-2-ones

摘要

An efficient electrochemical synthesis of 5-methylene-l,3-oxazolidin-2-ones (2a-h) from acetylenic amines (la-h) and carbon dioxide has been achieved by direct electrolysis of solution of MeCN and Et_4NPF_6 containing the amine,with subsequent CO_2 bubbling and heating.The yields vary from good to excellent,the conditions are mild,and the use of toxic and harmful chemicals and catalysts is avoided.