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US 5,675,037 AGranted
Selective acylation of hydrazines
AssigneeRohm and Haas Company
InventorMartha J. Kelly
Life of this patent
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Abstract
This application relates to a process for selectively monoacylating hydrazines by reacting unsubstituted or monoalkylhydrazines with trichloromethyl aryl ketones.
Claims1
A process for preparing a monoacylated hydrazine of the formula ##STR2## which comprises reacting a hydrazine of the formula
- --NH.sub.2 NH.sub.2
- or the corresponding hydrazine hydrate or hydrazine salt with a trichloromethyl aryl ketone of the formula ##STR3## wherein Aryl is phenyl substituted with one to three substituents independently selected from hydrogen, halo, (C.sub.1 -C.sub.6)alkyl, (C.sub.1 -C.sub.6)alkoxy, halo(C.sub.1 -C.sub.6)alkyl or halo(C.sub.1 -C.sub.6)alkoxy;
- or naphthyl.
Dependencies are inferred from the claim text.