Process for preparing 2-carboxydibenzoylmethanes

Details Process for preparing 2-carboxydibenzoylmethanes Process for preparing 2-carboxydibenzoylmethanes

1986-08-21

1987-06-02

Killos, Paul J.

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

Organic compounds

Carboxylic acids and salts thereof

562463, C07C 5984

Patent

active

046705856

ABSTRACT:
2-Carboxydibenzoylmethanes of the following formula ##STR1## in which R.sub.1 and R.sub.2 are independently a substituent joined to any position of the benzene nucleus and represent a hydrogen atom, a halogen atom, a linear or branched alkyl or alkenyl group having from 1 to 18 carbon atoms, or a linear or branched, saturated or unsaturated alkoxy group having from 1 to 18 carbon atoms, m is an integer of from 1 to 4, and n is an integer of from 1 to 5 are prepared inexpensively with ease in high yield by a novel process characterized by reaction between phthalic anhydrides and acetophenones in the presence of bases.
The 2-carboxydibenzoylmethanes are useful as an inhibitor of the root geotropic response of plants or a growth regulator for plants, or a stabilizer for halogen-containing resins.

REFERENCES:
patent: 3832362 (1974-08-01), Leimgruber et al.
Kateka, G. F., Phytochemistry, 15(10), 1421-14, 1976.
Brown, B. T. et al., Pestic. Sci., 4(4), 473-84, 1973.

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