Pyridazines by magnesium halide catalyzed cyclization

Details Pyridazines by magnesium halide catalyzed cyclization Pyridazines by magnesium halide catalyzed cyclization

1990-02-01

1990-10-09

Daus, Donald G.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D23702

Patent

active

049621998

ABSTRACT:
The present invention relates to a process for making substituted 4-oxo-1,4-dihydropyridazines by reacting a 2-phenylhyrazono-3-oxoglutarate with an organic acid halide in the presence of magnesium halide.

REFERENCES:
patent: 4661145 (1987-04-01), Fujimoto
patent: 4707181 (1987-11-01), Fujimoto
patent: 4732603 (1988-03-01), Patterson

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