1: trichlorophosphate / acetonitrile / 1 h / |Inert atmosphere; |Reflux 2: sodium tetrahydroborate / methanol / 2 h / 20 °C / |Inert atmosphere 3: dichloromethane / 2 h / 20 °C 4: palladium diacetate; potassium carbonate; 2-Ph2P-2'-(Me2N)biphenyl / N,N-dimethyl acetamide / 4 h / 130 °C 5: lithium aluminium tetrahydride / tetrahydrofuran / 4 h / |Reflux 6: potassium hydroxide / methanol / 6 h / 45 °C View Scheme