Hydrochloric Acid → 2-Chloro-4-morpholin-4-yl-6-piperidin-4-ylidenemethyl-thieno[3,2-d]pyrimidine

Participants

Reaction Steps

To a suspension of 4-(2-chloro-4-morpholin-4-yl-thieno[3,2-d]pyrimidin-6-ylmethylene)-piperidine-1-carboxylic acid tert-butyl ester (0.85 g) in dichloromethane (10 mL) at room temperature was added hydrogen chloride (2 mL of a 2.0 M solution in diethyl ether). The reaction mixture was stirred at room temperature for 16 h and then reduced in vacuo. The residue was redissolved in dichloromethane (10 mL) and washed with saturated sodium carbonated solution (2×10 mL) and brine (10 mL), dried (MgSO4) and reduced in vacuo to give 2-chloro-4-morpholin-4-yl-6-piperidin-4-ylidenemethyl-thieno[3,2-d]pyrimidine (0.53 g).

Provenance & Evidence