Process for producing 4-benzoylpyrazoles

Details Process for producing 4-benzoylpyrazoles Process for producing 4-benzoylpyrazoles

1982-07-20

1983-11-15

Jiles, Henry R.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D 2320

Patent

active

044157398

ABSTRACT:
4-Benzoyl-5-hydroxypyrazoles useful as herbicidal active ingredients, their intermediate or stabilizers against heat, oxidation or ultraviolet light are produced by a condensation of a pyrazolone, tetrachloromethane and a benzene compound in the presence of an aluminium halide, followed by a hydrolysis reaction with industrial advantages.

REFERENCES:
patent: 3939203 (1976-02-01), Mattison et al.
patent: 4070536 (1978-01-01), Kohotsune et al.
patent: 4146726 (1979-03-01), Kohotsune et al.
Chem Abst. 1982, vol. 96, No. 85548q.

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