Hindered piperidine ligands

Details Hindered piperidine ligands Hindered piperidine ligands

1981-06-08

1983-03-22

Bond, Robert T.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546 20, 546190, 546191, 546238, 546239, 546248, 546215, 546246, C07D21134, C07D47110, C07D47120

Patent

active

043776906

ABSTRACT:
Novel ligands of the general formula wherein r is 1 or 2, and L is a piperidine which is substituted by at least one enolate group in the 1-position or 4-position and wherein the ring nitrogen is sterically hindered by alkyl substituents in the adjacent positions. These ligands are useful in preparing light stabilizers.

REFERENCES:
patent: 3904581 (1975-09-01), Murayama et al.
patent: 4231921 (1980-11-01), Moser

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