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Urea derivatives Q 0640High-Pressure Organic Chemistry. Part 30. A New Practical Method for the Synthesis of Unsymmetrical Ureas via High-Pressure-Promoted Condensation of 2,2,2-Trichloroethyl Carbamates (Troc-Carbamates) with Amines. -Direct condensation of Troc-carbamates with primary and secondary amines provides a new practical method for the synthesis of a variety of unsymmetrical ureas. -(AZAD, S.; KUMAMOTO, K.; UEGAKI, K.; ICHIKAWA, Y.; KOTSUKI*, H.; Tetrahedron Lett. 47 (2006) 4, 587-590; Lab. Nat. Prod. Synth., Fac. Sci., Kochi Univ., Akebono, Kochi 780, Japan; Eng.) -Mais 17-089