Diisopropylethylamine → 7-Methoxy-3-{1-[6-(4-methyl-2-oxo-2,3-dihydrobenzoxazole-6-carbonyl)-pyrimidin-4-yl]-piperidin-4-yl}-1,3,4,5-tetrahydro-1,3-benzodiazepin-2-one

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Reaction Steps

275 mg (1.00 mmol) 7-methoxy-3-piperidin-4-yl-1,3,4,5-tetrahydro-1,3-benzodiazepin-2-one, 289 mg (1.00 mmol) 6-(6-chloropyrimidine-4-carbonyl)-4-methyl-3H-benzoxazol-2-one and 0.348 mL (2.00 mmol) DIPEA were stirred overnight in 10 mL DMF at RT. The mixture was purified by preparative HPLC-MS. The fractions containing the product were combined, the organic solvent was eliminated i. vac. and the aqueous phase remaining was neutralised with 4N aqueous NaOH solution. The precipitate was suction filtered, washed with water and dried in the CAD.

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