Process for preparing pyrazines from hydroxyamines

Details Process for preparing pyrazines from hydroxyamines Process for preparing pyrazines from hydroxyamines

1986-10-24

1988-11-29

Daus, Donald G.

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

Organic compounds

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

544358, 544410, C07D24112

Patent

active

047882891

ABSTRACT:
This invention relates to the cyclocondensation of hydroxyamines to form pyrazines by a process comprising reacting said hydroxyamine in the presence of a catalyst comprising a rhodium, ruthenium or palladium-containing compound and a phosphine-containing compound under mild conditions.

REFERENCES:
patent: 2813869 (1957-11-01), Langdon
patent: 3067199 (1962-12-01), Langdon
patent: 4097478 (1978-06-01), Sato
patent: 4233226 (1980-11-01), Takeda et al.
Trost et al, Chem. Abstracts, vol. 93 (1980), entry 71447g.
Tsuji et al, Chem. Abstracts, vol. 102 (1985), entry 185055n.

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