Phosphine ligands allylsilane

Under catalysis by a Pd complex with homochiral phosphine ligand 19, silaboration of terminal allenes with homochiral silylborane 18 shows high enantioface-selectivity by double asymmetric induction (Equation (25)).lls The resultant /3-borylated allylsilanes can be used for asymmetric carbonyl allylation. 

Early studies on the palladium-catalyzed asymmetric hydrosilylation of cyclic conjugated dienes employing menthyl- and neomenthyldiphenylphosphine and ferrocenylamino-phosphine ligands gave low enantiomeric excesses of the corresponding allylsilane [13]. 

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