Diphenyl acetic acid derivatives

Details Diphenyl acetic acid derivatives Diphenyl acetic acid derivatives

1992-11-23

1993-11-09

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

564171, 562468, C07L 6976

Patent

active

052604306

ABSTRACT:
Novel diphenyl acetic acid derivatives of the formula I are described, ##STR1## in which R is C.sub.3 -C.sub.18 -2-alkenyl, C.sub.3 -C.sub.8 -2-alkynyl or phenyl-C.sub.1 -C.sub.4 alkyl, each of which is unsubstituted or substituted by phenyl, R.sub.1 is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.12 cycloalkyl or phenyl-C.sub.1 -C.sub.4 alkyl, R.sub.2 is --OR.sub.4 or --NR.sub.5 R.sub.6, R.sub.4 is hydrogen, C.sub.1 -C.sub.18 alkyl or (--CH.sub.2 --).sub.n G, R.sub.5 and R.sub.6 independently of one another are hydrogen, C.sub.1 -C.sub.12 alkyl or phenyl-C.sub.1 -C.sub.4 alkyl, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 independently of one another are hydrogen, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy, with the proviso that at least one of the radicals R.sub.7, R.sub.8, R.sub.9 or R.sub.10 is hydrogen, R.sub.11 is hydrogen, C.sub.1 -C.sub.18 alkoxy, C.sub.5 -C.sub.8 cycloalkoxy, phenyl-C.sub.1 -C.sub.4 alkoxy or C.sub. 3 -C.sub.18 -2-alkenyloxy, n is a number from 2 to 12, and G is a group of the formula ##STR2## The compounds according to the invention can be used as stabilizers for organic materials.

REFERENCES:
patent: 4325863 (1982-04-01), Hinsken et al.
patent: 4338244 (1982-07-01), Hinsken et al.
patent: 5175312 (1992-12-01), Dubs et al.
W. Bradley et al. J. Chem. Soc. 1622-1627 (1956).

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