Cyclizative Atmospheric CO₂ Fixation by Unsaturated Amines with t‑BuOI Leading to Cyclic Carbamates

A cyclizative atmospheric CO₂ fixation by unsaturated amines such as allyl and propargyl amines under mild reaction conditions, efficiently leading to cyclic carbamates bearing a iodomethyl group, have been developed utilizing tert-butyl hypoiodite (t-BuOI).