To a solution of malondianilide (102 mg, 0.40 mmol) in THF (2 mL) was added of NaH (16.3 mg, 60% wt. dispersion in mineral oil, 0.41 mmol). After 10 min, the malonate salt solution was added to a solution of 2-methanesulfonyl-thieno[2,3-d]pyrimidine-6-carboxylic acid methyl ester (100 mg, 0.367 mmol) in THF/DMF (2/0.5 mL). After 1 h, the reaction was quenched with sat. NH4Cl and extracted with EtOAc. The organic layer was washed with brine (1×), dried over MgSO4, filtered, and concentrated. The residue was triturated with EtOAc and H2O, and the solid was filtered.: ESIMS calcd 447 (W+H), found 447 M++H).
