[CH3:1][O:2][C:3]([C:5]1[S:18][C:8]2[N:9]=[C:10]([S:14]([CH3:17])(=[O:16])=[O:15])[N:11]=[C:12](Cl)[C:7]=2[CH:6]=1)=[O:4].N#N>C1COCC1.CO.[Pd]>[CH3:1][O:2][C:3]([C:5]1[S:18][C:8]2[N:9]=[C:10]([S:14]([CH3:17])(=[O:16])=[O:15])[N:11]=[CH:12][C:7]=2[CH:6]=1)=[O:4]To a solution of 4-chloro-2-methanesulfonyl-thieno[2,3-d]pyrimidine-6-carboxylic acid methyl ester (700 mg, 2.2 mmol) in THF/MeOH (10/10 mL) purged with N2 was added Pd/C (700 mg). The reaction mixture was purged with N2, evacuated and purged with H2 three times. After 6 h, the mixture was filtered via Celite and concentrated. The residue dissolved in MeOH/CH2Cl2 and the solid was filtered. The filtrate containing the product was concentrated and used without further purification. ESIMS calcd 273 (M++H), found 273 (M++H).
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