Unsymmetrical Ureas Research Articles

S,S-Dimethyl Dithiocarbonate: A Convenient Reagent for the Synthesis of Symmetrical and Unsymmetrical Ureas.

S,S-Dimethyl Dithiocarbonate: A Convenient Reagent for the Synthesis of Symmetrical and Unsymmetrical Ureas.

Tetrahydropyranyl protecting group. I. Tetrahydropyran-2-yl isocyanate

It is shown that monoalkyl and unsymmetrical dialkyl ureas, and alkyl carbamates, are preparable via a two-step sequence involving tetrahydropyran-2-yl isocyanate, and a primary or secondary amine, or an alcohol, respectively.

A New Synthesis of Ureas. IV. The Preparation of Unsymmetrical Ureas from Carbon Monoxide, Sulfur, and Amines

A New Synthesis of Ureas. IV. The Preparation of Unsymmetrical Ureas from Carbon Monoxide, Sulfur, and Amines