Preparation of 2-aminopyrazines and pyrazines

Details Preparation of 2-aminopyrazines and pyrazines Preparation of 2-aminopyrazines and pyrazines

1985-06-03

1987-08-18

Gerstl, Robert

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

544408, 544409, C07D24118, C07D24120

Patent

active

046878483

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/of 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.

REFERENCES:
patent: 3607910 (1971-09-01), Wood et al.
Chem. Ber. 100 (1967) 560-563.
J. Amer. Chem. Soc. 90 (1968) 2424, 2425.
J. Org. Chem. 44 (1979) 1128-1130.
Barot et al., J. Chem. Soc. Perkin I, (1973) 606-612.
Chem. Abstracts, vol. 91 (1979) Entry 57537p.

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