Enynones in organic synthesis. 7. Substituent effects on the α-tocopherol-catalyzed cyclization of enynones to methylenecyclopentenones. Convenient syntheses of members of the methylenomycin class of antibiotics
Substituent effects on the α-tocopherol (vitamin E, 3b) catalyzed cyclization of a wide variety of enynones 1a-z to methylenecyclopentenones 7a-z have been examined, with particular emphasis given to electron-withdrawing and -donating groups at positions
Jacobi,Brielmann,Cann
p. 5305 - 5316
(2007/10/02)
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