Tetrahedron Letters p. 7697 - 7700 (1992)
Update date:2022-08-04
Topics: Stereoselective synthesis Intermediate Versatile All-trans-retinoic acid Beta-carotene Expedient route
Babler
Schlidt
Base-catalyzed isomerization of vinyl phosphonate 5 afforded the corresponding allylic phosphonate (6) as the sole product. Horner-Emmons olefination of ethyl trans-3-methyl-4-oxo-2-butenoate with the ylide derived from 6 concludes a facile synthesis of t
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