4-phenylbut-3-en-2-one; dihydridotetrakis(triphenylphosphine)ruthenium(II) in toluene T=20°C; 10 h; Yield given. Yields of byproduct given;

1: trifluoromethanesulfonyloxybenzene With dicyclohexyl(2′,6′-dimethoxybiphenyl-2-yl)phosphine; anhydrous lithium acetate; palladium diacetate in tert-butyl methyl ether T=25°C; 0.166667 h; Inert atmosphereGloveboxSchlenk technique; 2: ((3,4-dihydro-2H-pyran-6-yl)oxy)trimethylsilane in tert-butyl methyl ether T=25°C; 6 h; Inert atmosphereGlovebox; enantioselective reaction;

sodium tetrahydroborate in N,N-dimethyl-formamide 1.5 h; Ambient temperature; Yield given. Yields of byproduct given. Title compound not separated from byproducts;

1,8-diazabicyclo[5.4.0]undec-7-ene in tetrahydrofuran; N,N-dimethyl-formamide T=60°C; 18 h; Product distribution; Further Variations:ReagentsSolventsTemperatures;