Process for the preparation of asymmetrically substituted ureas,

Details Process for the preparation of asymmetrically substituted ureas, Process for the preparation of asymmetrically substituted ureas,

1992-10-09

1993-09-28

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Esters having the thiocarboxylate group, -cx-, wherein the...

560 24, 564 57, 564 48, 564 61, 564 64, C07C 6736, C07C33300, C07C27300

Patent

active

052487555

ABSTRACT:
Process for the preparation of asymmetrically substituted ureas, carbamates, thiocarbamates or substituted isocyanates by reaction of an adduct of isocyanic acid and a tertiary amine with a primary and secondary amine, an alcohol, a thiol or a compound having one or two non-cumulated olefinic double bonds, and a process for the preparation of N-mono- or N,N-disubstituted ureas by reaction of ammonium isocyanate with a primary or secondary amine in a diluent.

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