Process for the preparation of 2,2,6,6-tetramethyl-4-piperidylox

Details Process for the preparation of 2,2,6,6-tetramethyl-4-piperidylox Process for the preparation of 2,2,6,6-tetramethyl-4-piperidylox

1995-08-10

1997-07-29

Gupta, Yogendra N.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

540553, 544212, 544219, C07D40312, C07D40306, C07D40314

Patent

active

056523645

ABSTRACT:
Novel process for the preparation of 2,2,6,6-tetramethyl-4-piperidyloxy-1,3,5-triazines, based on the reaction of cyanuric chloride with C.sub.1 -C.sub.4 alkanols or with sodium or potassium C.sub.1 -C.sub.4 alkoxides and subsequent reaction with 2,2,6,6-tetramethyl-4-piperidinols in the presence of a transesterification catalyst.
The various reactions can be carried out in the same reactor, without isolation of the intermediates. ##STR1##

REFERENCES:
patent: 3925376 (1975-12-01), Chalmers et al.
patent: 4108829 (1978-08-01), Cassandrini et al.
patent: 4412020 (1983-10-01), Loffelman et al.
patent: 4769443 (1988-09-01), Cantatore
J. Am. Chem. Soc. 73, 2999, 1951.
English Translation of EP 0117229, 1984.

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