1.1: pyridine; thionyl chloride / 16 h / 15 - 75 °C 1.2: 16 h / |Reflux 2.1: trichlorophosphate; N,N-diethylaniline / 105 °C View Scheme

acetic acid; platinum Hydrogenation;

1.1: pyridine; thionyl chloride / 16 h / 15 - 75 °C 1.2: 16 h / |Reflux 2.1: trichlorophosphate; N,N-diethylaniline / 105 °C 3.1: triethylamine / dichloromethane; tetrahydrofuran / 3 h / -78 °C 4.1: lithium aluminium tetrahydride / tetrahydrofuran / 1 h / 0 - 5 °C 5.1: manganese(IV) oxide / tetrahydrofuran / 1 h / 40 °C View Scheme