3-phenylbenzofuran-2-ones

Details 3-phenylbenzofuran-2-ones 3-phenylbenzofuran-2-ones

1991-08-27

1992-12-29

Fan, Jane T.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549310, C07D30779

Patent

active

051753120

ABSTRACT:
Novel compounds of the formula I ##STR1## in which R.sub.1 is C.sub.13 -C.sub.30 alkyl, R.sub.2 is hydrogen, C.sub.1 -C.sub.10 alkyl, C.sub.5 -C.sub.12 cycloalkyl, C.sub.5 -C.sub.7 cycloalkyl which is substituted by C.sub.1 -C.sub.4 alkyl, or is phenyl or C.sub.7 -C.sub.12 phenylalkyl, R.sub.3 is hydrogen or C.sub.1 -C.sub.4 alkyl and Z is phenyl, phenyl which is substituted by C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.4 alkoxy or chlorine, a group ##STR2## in which n is 1 or 2 or a group ##STR3## in which the radicals A independently of one another are C.sub.1 -C.sub.8 alkyl, methoxy or ethoxy, are suitable for stabilizing organic material against oxidative, thermal and actinic degradation.

REFERENCES:
patent: 4325863 (1982-04-01), Hinsken et al.
patent: 4338244 (1982-07-01), Hinsken et al.
patent: 4366240 (1982-12-01), Lassig et al.
patent: 4611016 (1986-09-01), Hinsken et al.
Derwent Abst. 86-207397/32.
Derwent Abst. 86-214695/33.
Research Disclosure 28888 (Apr. 1988).

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