Hydrochloric Acid → 2-Chloro-4-morpholinothieno[3,2-d]pyrimidine-6-carbonitrile

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Reaction Steps

A solution of 2-chloro-6-iodo-4-morpholinothieno[3,2-d]pyrimidine 19 from Example 12 (0.2 g, 0.5 mmol) and CuCN (50 mg, 0.6 mmol) in pyridine (1 mL) was heated at 115° C. for 2 h then cooled to room temperature and stirred 18 h. The reaction was poured into 1 M HCl and ice and the aqueous layer was extracted with CH2Cl2. The product was purified by silica gel chromatography (0-75% EtOAc in hexane) to provide 2-chloro-4-morpholinothieno[3,2-d]pyrimidine-6-carbonitrile (35 mg).

Provenance & Evidence