K. Lee, Yong Joon Kim
1973
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Journal
Korean Journal of Chemical Engineering
Abstract
4-oxo-2, 6-dimethyl-2, 6-diethylpiperidine [III] and its N-oxyl [N], the homologs of 4-oxo-2,2,6,6-tetramethyl piperidine [I] and its N-oxyl [II] were synthesized in 17.9 % yield from methylethylketone and in 62% yield from [III]. And some new compounds containing [I] and [II] were also synthesized. They are heterocyclic azonitriles [VII, IX]. Compound [IX] has an unstable azo group and stable N-oxyl group in same molecule, and we synthesized three phthalic diesters and three phthalic diamides containing N-oxyl. Three phthalic diamides having piperidine were also synthesized. All compounds were identified by spectroscopic methods and elemental analyses.