bis(dibenzylideneacetone)-palladium(0); tri-iso-propyl phosphine in tetrahydrofuran; THF-d8 (tetrahydrofuran-d8) T=100°C; P=2660.18 Torr; 5 h;

isopropyl alcohol; zinc

1: dibenzoyl peroxide 2: ethanolic KOH-solution 3: zinc; propan-2-ol View Scheme

1: ethanolic KOH-solution 2: zinc; propan-2-ol View Scheme

tetrakis(triphenylphosphine) palladium(0); n-butyllithium; zinc(II) chloride 1.) THF-ether, -100 deg C, 10 min, 2.) THF-ether, -100 deg C, 20 min, 3.) THF-ether, 20 deg C, 1 h; Yield given. Multistep reaction;