‘Phospha-Wittig’ reactions using isolable phosphoranylidenephosphines ArP[double bond, length half m-dash]PR₃ (Ar = 2,6-Mes₂C₆H₃ or 2,4,6-Bu^t₃C₆H₂)

Abstract

Phosphoranylidenephosphines DmpP[double bond, length half m-dash]PMe₃ (1a, Dmp = 2,6-Mes₂C₆H₃) and Mes*P[double bond, length half m-dash]PMe₃ (1b, Mes* = 2,4,6-Bu^t₃C₆H₂) act as ‘Phospha-Wittig’ reagents with aldehydes providing phosphaalkenes [ArP[double bond, length half m-dash]C(H)R] in high yields.

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