in diethyl ether; dichloromethane soln. of Au complex and phosphine in CH2Cl2-diethylether was stirred overnight, volatiles removed at reduced pressure; residue recrystd. twice from benzene-petroleum ether; elem. anal.;

air in methanol-d4 T=27.84°C; 24 h;

air in methanol-d4 T=27.84°C; 72 h;

1: methanol-d4 / -30.16 °C 2: air / methanol-d4 / 24 h / 27.84 °C View Scheme

1: 27.84 °C 2: air / methanol-d4 / 72 h / 27.84 °C View Scheme

1: chloroform-d1 / 27.84 °C 2: methanol-d4 / 27.84 °C 3: air / methanol-d4 / 72 h / 27.84 °C View Scheme