Pawlowski R, Stodulski M, Mlynarski J. Propargylation of CoQ0 through the Redox Chain Reaction.
J Org Chem 2021;
87:683-692. [PMID:
34933550 PMCID:
PMC8749960 DOI:
10.1021/acs.joc.1c02685]
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Abstract
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An efficient catalytic
propargylation of CoQ0 is described by employing
the cooperative effect of Sc(OTf)3 and Hantzsch ester.
It is suggested to work through the redox chain reaction, which involves
hydroquinone and dimeric propargylic moiety intermediates. A broad
range of propargylic alcohols can be converted into the appropriate
derivatives of CoQ0 containing triple bonds in good to excellent yields.
The mechanism of the given transformation is also discussed.
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