Toluene → HCID 118023129, compound

Participants

Reaction Conditions

Reaction Steps

To a mixture of 6-cyclohexyl-2-methylthieno[2,3-d]pyrimidin-4(3H)-one (25.0 g) and toluene (300 mL) were added phosphorous oxychloride (14 mL) and DMF (200 μL), followed by heating to reflux at 150° C. for 14 hours. The reaction mixture was left to be cooled to room temperature and concentrated under reduced pressure. To the residue were added chloroform, water, and saturated aqueous sodium bicarbonate, followed by stirring. The reaction mixture was extracted with chloroform. The organic layer was washed sequentially with water and brine. To the organic layer were added MgSO4, activated carbon (2 g), and silica gel (100 mL), followed by stirring. The mixture was filtered through Celite and then concentrated under reduced pressure to obtain 4-chloro-6-cyclohexyl-2-methylthieno[2,3-d]pyrimidine (27.4 g).

Provenance & Evidence