[2-(Trimethylsilyl)ethylidene]tris(2-methylphenyl)phosphorane, a modified seyferth-wittig reagent for the stereoselective syntheses of -allyltrimethylsilanes
[2-(Trimethylsilyl)ethylidene]tris(2-methylphenyl)phosphorane, a modified seyferth-wittig reagent for the stereoselective syntheses of -allyltrimethylsilanes