Process for preparing 6-halo-2-chloroquinoxaline

Details Process for preparing 6-halo-2-chloroquinoxaline Process for preparing 6-halo-2-chloroquinoxaline

1984-11-01

1987-01-13

Berch, Mark L.

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

Organic compounds

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

544356, 564133, C07D24144, C07B 100

Patent

active

046365621

ABSTRACT:
A process for the preparation of 2-chloro-6-haloquinoxaline compounds from the corresponding 4-halo-2-nitroaniline utilizing four reaction steps with generally compatible solvents and reagents with volatile by-products to minimize the isolation and purification of intermediates has been developed.

REFERENCES:
patent: 3252941 (1966-11-01), Chang et al.
Burton et al, J. Chem. Soc. .COPYRGT.1968, pp. 1274-1280.
BASF, Chem. Abs., 60, 2987f (1963).
Cheeseman et al, "Condensed Pyrazines", vol. 35, pp. 162, 168 (Wiley, NY) 1979.
A. S. Elina et al., Zh. Obsch. Khim, 33, 1544 (1963).
R. E. Lutz et al., J. Amer. Chem. Soc., 68, 1322 (1946).

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