A mixture of 4-(5-chloro-2-iodothiazolo[5,4-d]pyrimidin-7-yl)morpholine 18 (400 mg, 1 mmol), 3-methylsulfonylphenylboronic acid (230 mg, 1.1 mmol), bis (triphenylphosphine)palladium(II) dichloride (37 mg, 0.052 mmol) in 4 ml of acetonitrile and 4 mL of 1.0 M of sodium carbonate aqueous solution was heated to 100° C. in the microwave for 10 min. Water (5 mL) was added and the resulting solid was filtered and washed with water and ethyl acetate to yield crude 5-chloro-2-(3-methanesulfonyl-phenyl)-7-morpholin-4-yl-thiazolo[5,4-d]pyrimidine (400 mg).
