Patent · US Expired

N-Phenyl-N'-cyano-O-phenylisoureas

US4285878A · kind A · utility

0Cited by

1References

7Claims

0Family size

Assignee

SmithKline Corporation · US

Inventors

Clifford S. Labaw · Philadelphia, US
Robert L. Webb · West Chester, US

Key dates

Filing date	Jan 31, 1980
Grant date	Aug 25, 1981
Priority date	—
Expiry date	Jan 31, 2000

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D235/32
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

N-Phenyl-N'-cyano-O-phenylisoureas are prepared from N-cyanodiphenoxyimidocarbonate and an optionally substituted o-phenylenediamine or o-aminophenol. The isoureas are new chemical intermediates especially useful for preparing 2-cyanamido and 2-carbomethoxyaminobenzimidazole and benzoxazole compounds having anthelmintic activity.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.