Journal article

2-Alkenyldiphenylphosphine oxides and PO-ylides derived thereof in trans selective Horner-Wittig olefination reactions

Allylic PO-ylides generated by deprotonation of 2-alkenyldiphenylphosphine oxides with BuLi were used to prep. 1,3-dienes trans-selectively. The (Z/E) ratios of the newly formed double bond are 1:99 when straight-chain, while they were 2:98 to 4:96 when b-branched aliph., and 4:96 to 6:94 when arom. aldehydes were employed. [on SciFinder (R)]


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