Piperidine compounds

Details Piperidine compounds Piperidine compounds

1988-02-16

1989-08-08

Bond, Robert T.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546187, 524 99, C07D40112, C07D40114, C08K 534

Patent

active

048554340

ABSTRACT:
The novel compounds of the formula (I) ##STR1## in which n is 1 or 2, R.sub.1 is hydrogen, 0.sup..multidot. NO, cyanomethyl, C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.6 alkenyl or C.sub.3 -C.sub.6 alkynyl subject to the proviso that the carbon atom attached to the nitrogen atom is a primary carbon atom, benzyl, C.sub.1 -C.sub.7 acyl or OH-monosubstituted C.sub.2 -C.sub.4 alkyl, R.sub.2 is hydrogen, C.sub.1 -C.sub.4 alkyl or phenyl, R.sub.3 is a group of the formula (II) ##STR2## with R.sub.6 being as defined for R.sub.1, R.sub.4 is --COOR.sub.3 or --CN and, if n is 1, R.sub.5 is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.4 alkyl substituted by C.sub.1 -C.sub.12 alkoxy or di(C.sub.1 -C.sub.6 alkyl)amino, or C.sub.5 -C.sub.12 cycloalkyl unsubstituted or substituted by 1, 2 or 3 C.sub.1 -C.sub.4 alkyl radicals, benzyl, benzyl substituted by 1, 2 or 3 C.sub.1 -C.sub.4 alkyl radicals, or a group of the formula (II), and, if n is 1 and R.sub.4 is --CN, R.sub.3 is additionally a group of the formula ##STR3## with R.sub.1, R.sub.2 and R.sub.5 being as defined above and R.sub.7 being as defined for R.sub.2, and, if n is 2, R.sub.5 is C.sub.2 -C.sub.12 alkylene, C.sub.6 -C.sub.15 cycloalkylene, phenylene, xylylene or C.sub.4 -C.sub.12 alkylene which is interrupted in the chain by one or two oxygen atoms or one or two groups ##STR4## with R.sub.2, R.sub.4 and R.sub.6 being as defined above, are useful for stabilizing organic material against oxidative, thermal and light-induced degradation.

REFERENCES:
patent: 4140673 (1979-02-01), Lachmann et al.

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