Dimethyl Carbonate in the Regio‐ and Stereocontrolled Opening of Three‐Membered Heterocyclic Rings.

Harmful or carcinogenic solvents such as CH2Cl2, Et2O, MeCN or acetone can be successfully replaced by the more eco-friendly medium dimethylcarbonate in nucleophilic ring-opening reactions of oxiranes and aziridines.