Ruthenium tris(2,2,6,6-tetramethyl-3,5-heptanedionate) catalyzed synthesis of vinyl carbamates using carbon dioxide, amines and alkynes

Copper-catalyzed four-component reaction of alkenes, Togni's reagent, amines and CO2: stereoselective synthesis of (Z)-enol carbamates

A copper-catalyzed four-component reaction of alkenes, Togni's reagent, amines and CO₂ was disclosed, providing an efficient and straightforward access to a range of stereodefined (Z)-enol carbamates.

Ruthenium catalyzed regioselective coupling of terminal alkynes, amine and carbon dioxide leading to anti-Markovnikov adducts

An efficient RuCl₂(p-cymene)/DPPE catalyzed addition of secondary amines and CO₂ to terminal alkynes was reported affording anti-Markovnikov adducts of alkenyl carbamates in good yield with excellent regioselectivity.