Unsaturated carbonyl compounds Potassium hydride

Anionic activation of Si—H bonds " by fluorides, such as KF or CsF, or by potassium phthalate, KHCO3, KSCN, etc., yields powerful hydridic reagents that reduce the carbonyl group of aldehydes, ketones and esters, " and 1,2-reductions of a,p-unsaturated aldehydes and ketones occur with high selectivity. " The analogous activation of hydridosllanes by fluoride ions is also achieved under acidic conditions with boron trifluoride etherate, in which the latter compound is consumed and fluorosilanes are formed. ... 

---