3-phenyl-propionaldehyde; polymethylhydrosiloxane; tetrabutyl ammonium fluoride 1.) THF, -72 deg C, 20 min, 2.) THF, -72 deg C -> room temperature, 1 h; Yield given. Multistep reaction. Yields of byproduct given. Title compound not separated from byproducts;

polymethylhydrosiloxane; tris(pentafluorophenyl)-borane in dichloromethane T=20°C;