Process for preparing 1, 3-disubstituted urea

Details Process for preparing 1, 3-disubstituted urea Process for preparing 1, 3-disubstituted urea

1997-12-04

1999-05-11

Kumar, Shailendra

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

Organic compounds

Amino nitrogen containing

546306, 549480, 564 32, 564 47, 564 48, 564 55, 564 57, 564 61, C07C273/18;275/06

Patent

active

059028998

ABSTRACT:
Process for preparing 1,3-disubstituted urea of the formula: ##STR1## wherein R.sup.5 is the same as or different from R.sup.6, and each of R.sup.5 and R.sup.6 is independently linear or branched, alkyl of 1-20 carbon atoms, alkenyl group having 2 to 20 carbon atoms or alkynyl group having 2 to 20 carbon atoms, which may have phenoxy, alkoxy of 1-13 carbon atoms, monocycloalkyl of 3-8 carbon atoms, bicycloalkyl of 6-12 carbon atoms, aryl of 6-13 carbon atoms, furyl, pyridyl, or aralkyl of 7-20 carbon atoms, comprising reacting cyclic carbonic acid ester with an amine using alkali metal alkoxide or trialkylamine as base, in safety and high yield.

REFERENCES:
V. Papesch et al., J. Org. Chem., 16, 1879-1890 (1951).
J. Izdebski et al., Synthesis, 6, 423-425 (1989).

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