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Nazarov cyclization retro

As predicted by stereoelectronic arguments, electron-donating substituents in the p-position raise the activation barrier for cyclization by stabilizing the pentadienyl cation (18, see Section 3.4.3). In 2002, Harmata and Lee reported that P-alkoxy substituents not only stabilize the pentadienyl cation but also promote a retro-Nazarov cyclization processes. Exposure of... [Pg.132]

See other pages where Nazarov cyclization retro is mentioned: [Pg.420]    [Pg.275]    [Pg.269]    [Pg.65]   
See also in sourсe #XX -- [ Pg.1096 ]



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