7 μl acetic acid and 50 mg (0.16 mmol) O-(1H-benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium tetrafluoroborate (TBTU) are placed in 5 mL dichloromethane, combined with 32 μl diisopropylethylamine and stirred for 0.5 hours at ambient temperature. 60 mg (0.13 mmol) N-[8-(2-chloro-5-piperidin-4-ylethynyl-phenyl)-4,5-dihydro-thiazolo[4,5-h]quinazolin-2-yl]-acetamide (Example 155) are added, then the mixture is stirred for 16 hours at ambient temperature. Then the reaction mixture is extracted with potassium carbonate solution and dichloromethane. The organic phase is dried and evaporated to dryness. The residue is purified by chromatography.
