In situ generation of highly reactive allenes from nitrocyclopropanes: controllable synthesis of enynes and enesters

Chem Commun (Camb). 2021 Jun 29;57(52):6424-6427. doi: 10.1039/d1cc01573g.

Abstract

A new and efficient strategy for ring-opening reactions of nitrocyclopropanes is developed for the first time for the divergent synthesis of enynes and enesters via in situ generated highly reactive electron-deficient intermediate allenes. Controllable approaches resulted in enynes and enesters with up to 89% and 90% yields, respectively. The reaction features easy operation, involves green solvents and simple inorganic bases, and is transition-metal free.