Journal of Organic Chemistry 2012-01-20

Stereoselective α-quaternization of 3-methoxycycloalk-2-enones via 1,4-diastereoinduction of alkoxy dienolates.

Gamal A I Moustafa, Yasumasa Kamada, Tetsuaki Tanaka, Takehiko Yoshimitsu

文献索引：J. Org. Chem. 77(2) , 1202-7, (2012)

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摘要

The alkylation of dienolates generated from 3-methoxycycloalk-2-enones having a 3'-hydroxyl alkenyl chain provides the corresponding quaternized cycloalkenones in a highly diastereoselective manner. The high degree of stereocontrol in the α-quaternization possibly implies intervention of a rigid chelating transition state that allows an efficient 1,4-asymmetric induction to take place.