Phosphorus oxychloride → HCID 62178176, compound

Participants

Reaction Conditions

Reaction Steps

The suspension of 2-(pyridin-3-yl)thieno[2,3-d]pyrimidin-4(3H)-one (6.0 g, containing salts) in POCl3 (30 ml.) was stirred at 120° C. for 10 h. After the reaction was completed, the mixture was added to ice-water slowly. The pH was adjusted to ˜7 by slowly adding NH3.H2O at 0° C., then a precipitate formed. The solid was collected and 540 mg of 4-chloro-2-(pyridin-3-yl)thieno[2,3-d]pyrimidine was obtained as a brown solid, LCMS m/z=247.9, 250.0 (M+1) (Method B) (retention time=1.85 min).

Provenance & Evidence