potassium hydroxide in ethanol; water 0.166667 h; RefluxSchlenk techniqueInert atmosphere;

in isopropyl alcohol byproducts: CO2; reaction carried out under dry argon; Rh-complex and triphenylphosphine placed into a reaction vessel and propanol-2 added; reaction vessel immersed into a water-bath preheated to 90°C; heated under reflux for30 min; mixture cooled to room temp.; mustard-colored crystals isolated by filtration, washed with ether, and dried in vacuo;

in isopropyl alcohol byproducts: CO, CO2; reaction carried out under dry argon; Rh-complex and triphenylphosphine placed into a reaction vessel and propanol-2 added; yellow precipitate formed; reaction vessel immersed into a water-bath preheated to 90°C; refluxed for 30 min; mixture cooled to room temp.; mustard-colored crystals isolated by filtration, washed with ether, and dried in vacuo; elem. anal.;

1: toluene 2: CO / ethanol View Scheme

CO in ethanol

hydrogen; triphenylphosphine in benzene under H2, heating soln. contg. excess PPh3;

triphenylphosphine in not given after S. S. Bath and H. Vaska, J. Am. Chem. Soc., 85, 3500 (1963);

in not given under N2 or Ar; Rh complex dissolved in solvent at room temp.;

hydrogen in benzene at 80°C, 6.5 atm H2 in benzene soln.;

in benzene byproducts: 2-butene, propene, propane; mixt. of Rh complex and silyl ether in benzene, stirred at 80°C for 4 h; evapd. in vac., analyzed by IR;