phosphorus oxychloride; triethylamine in dichloromethane under Ar atm. to N,N-dimethyl-3-phenylacrylamide in CH2Cl2 was added POCl3 and stirred at 0°C for 30 min, W complex and NEt3 in CH2Cl2 were added, 20°C, 16 h; react. mixt. was evapd. at 20°C, residue was dissolved in CH2Cl2 and chromed. on silica; diastereomers were not isolated;