反应详情

1.00 g of 5-chloro-3-methylthio-1,2,4-thiadiazole and 244 mg of {1,1′-bis(diphenylphosphino)ferrocene} dichloro palladium(II) dichloromethane complex were dissolved in 12 ml of tetrahydrofuran under nitrogen atmosphere, 13.2 ml of solution of (cyclohexyl)methyl zinc bromide in tetrahydrofuran (0.5 mol/l) was added thereto under ice-cooling taking for about 10 minutes, and the reaction mixture was stirred for 30 minutes under ice-cooling and for 8 hours at room temperature. Then, the reaction mixture was concentrated, and the residue subjected to silica gel column chromatography to give 1.29 g of 3-methylthio-5-(cyclohexyl)methyl-1,2,4-thiadiazole.

1. temperatureunder ice-cooling
2. concentrationThen, the reaction mixture was concentrated