Catalytic Annulation of Epoxides with Heterocumulenes by the Indium-Tin System

Abstract

In the synthesis of five-membered heterocycles by the annulation of epoxides with heterocumulenes such as carbon dioxide and isocyanates, we developed the indium-tin catalytic system and synthesized various cyclic adducts including novel types products under mild reaction conditions.

Keywords

• indium
• tin
• epoxide
• carbon dioxide, isocyanate, cyclic carbonate, 2-oxazolidinone