Process for producing phthalazinone and derivatives of the same

Details Process for producing phthalazinone and derivatives of the same Process for producing phthalazinone and derivatives of the same

1976-07-21

1978-06-20

Rizzo, Nicholas S.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

424250, C07D23732

Patent

active

040961435

ABSTRACT:
1-PHTHALAZINONE AND 1-PHTHALAZINONE DERIVATIVES OF THE FOLLOWING FORMULA: ##STR1## wherein R.sup.1 represents a hydrogen atom, an alkyl group, an aralkyl group, an acyloxyl group, an alkoxyl group, a halogen atom, a nitro group, an amino group or an amido group; and R.sup.2 represents a hydrogen atom, an alkyl group or an aryl group. Such can be prepared at good yields by the reaction of a benzoic acid derivative of the following formula: ##STR2## wherein R.sup.1 has the same meanings as defined above; X represents a halogen atom; and Y represents a hydroxyl group, an alkoxyl group or a halogen atom; with hydrazine or a hydrazine derivative of the following formula:

REFERENCES:
patent: 3429882 (1969-02-01), Doebel et al.
patent: 3479355 (1969-11-01), Doebel et al.
patent: 3882119 (1975-05-01), Nathansohn et al.

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