Potassium Cyanide → 6-(4,4-Dimethylcyclohexyl)-2-methylthieno[2,3-d]pyrimidine-4-carbonitrile

Participants

Reaction Conditions

Reaction Steps

To a mixture of 4-chloro-6-(4,4-dimethylcyclohexyl)-2-methylthieno[2,3-d]pyrimidine (31.1 g) and DMF (220 mL) were added CH3SO2Na (11 g) and KCN (10 g), followed by heating and stirring at 70° C. for 15 hours. The reaction mixture was concentrated to about a half of the amount under reduced pressure, diluted with water (300 mL), and then stirred. The precipitate was collected by filtration. To the precipitate was added chloroform, followed by dissolving therein, and MgSO4, activated carbon (10 g), and silica gel (100 mL) were added thereto, followed by stirring. The mixture was filtered through Celite and then concentrated under reduced pressure to obtain 6-(4,4-dimethylcyclohexyl)-2-methylthieno[2,3-d]pyrimidine-4-carbonitrile (27.4 g).

Provenance & Evidence