2-(dicyclohexylphosphino)-2',4',6'-tri-i-propyl-1,1’-biphenyl in tetrahydrofuran T=70°C; Heine reaction; 24 h; Inert atmosphere;

1: triethylamine / toluene / 1 h / 0 - 20 °C / Inert atmosphere 2: 2-(dicyclohexylphosphino)-2',4',6'-tri-i-propyl-1,1’-biphenyl / tetrahydrofuran / 24 h / 70 °C / Inert atmosphere View Scheme

potassium hydroxide

1: benzene; diluted KOH-solution 2: alcoholic KOH-solution View Scheme