Patent · US Expired

2-Aminopyrazines and the preparation of 2-aminopyrazines and pyrazines

US4560756A · kind A · utility

5Cited by

1References

9Claims

0Family size

Assignee

BASF SE

Inventors

Fritz Brunnmueller · Schifferstadt, DE
Michael Kroener · Mannheim, DE

Key dates

Filing date	Nov 2, 1983
Grant date	Dec 24, 1985
Priority date	—
Expiry date	Nov 2, 2003

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D241/20
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Novel 2-aminopyrazines and processes for the preparation of 2-aminopyrazines and pyrazines by reaction of an .alpha.-iminodiacetonitrile (a) with a hydrogen halide or (b) with an alcohol or a thioalcohol and a hydrogen halide or (c) with an alcohol or a thioalcohol in the presence of an alkali metal compound and/or an alkaline earth metal compound. The 2-aminopyrazines and pyrazines obtainable by the process of the invention are useful starting materials for the preparation of dyes, fungicides, bactericides, textile assistants, scents, folic acid derivatives, flavorings, and active ingredients in crop protection and drugs.

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