Direct Conversion of Terpenylalkanolamines to Ethylidyne N-Nitroso Compounds
A series of mono- and diterpenylalkanolamines bearing isopropylidene functionality on the terpene group was reacted with sodium nitrite in aqueous acetic acid to yield ethylidyne N-nitroso analogues.The key feature of this direct conversion involved initial N-nitrosation followed by apparent elimination of a "CH4" unit (not necessarily methane) from the isopropylidene double bond.The product distribution data for ethylidyne nitrosamines derived from tertiary terpenyl alkanolamines reflect the conformational outcome of the nitrosative dealkylation process.For β,γ-unsaturated allylic diterpenylethanolamines, electronic effects appeared to be important for controlling the product distribution of ethylidyne nitrosamines in light of the highly selective α-cleavage observed in the nitrosation reactions.
Abidi, S. L.
p. 2687 - 2694
(2007/10/02)
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