‘Phospha-Wittig’ reactions using isolable phosphoranylidenephosphines ArP
PR3 (Ar = 2,6-Mes2C6H3 or 2,4,6-But3C6H2)
Abstract
Phosphoranylidenephosphines DmpPPMe3 (1a, Dmp = 2,6-Mes2C6H3) and Mes*P
PMe3 (1b, Mes* = 2,4,6-But3C6H2) act as ‘Phospha-Wittig’ reagents with aldehydes providing phosphaalkenes [ArP
C(H)R] in high yields.