Patent · US Expired

.alpha.-(o-chlorophenyl)-aminomethylene-.beta.-formylaminopropionitrile

US4716243A · kind A · utility

2Cited by

2References

1Claims

0Family size

Assignee

BASF SE

Inventors

Hansgeorg Ernst · Speyer, DE
Wolfgang Littmann · Mannheim, DE
Joachim Paust · Schifferstadt, DE

Key dates

Filing date	Aug 15, 1985
Grant date	Dec 29, 1987
Priority date	—
Expiry date	Aug 15, 2005

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C255/00
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

.alpha.-(o-Chlorophenyl)-aminomethylene-.beta.-formylaminopropionitrile, process for its preparation by reacting a metal salt of .alpha.-formyl-.beta.-formylaminopropionitrile with a salt of o-chloroaniline in an aqueous medium, and use of the product to prepare the compound of the formula ##STR1## by reaction with acetamidine. The pyrimidine thus obtained is an intermediate for the preparation of vitamin B.sub.1.

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