Tetrahedron Letters p. 2477 - 2480 (1983)
Update date:2022-08-05
Topics:
Maryanoff, Bruce E.
Reitz Allen B.
Duhl-Emswiler, Barbara A.
The reaction of aldehydes with oxido ylides shows a dramatic dependence of alkene stereochemistry on the distance between oxygen and phosphorus atoms; ylides with proximal O and P atoms favor production of E alkenes.The high E stereoselectivity with γ-oxido ylides is not mainly attributable to intramolecular proton-exchange in a Wittig intermediate.
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