Methanol → 7-Methoxy-3-{1-[6-methoxy-5-(4-methyl-2-oxo-2,3-dihydro-benzoxazole-6-carbonyl)-pyridazin-3-yl]-piperidin-4-yl}-1,3,4,5-tetrahydro-benzo[d][1,3]diazepin-2-one

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Reaction Steps

0.13 g (0.11 mmol) (purity 50%) 3-{1-[6-chloro-5-(4-methyl-2-oxo-2,3-dihydro-benzoxazole-6-carbonyl)-pyridazin-3-yl]-piperidin-4-yl}-7-methoxy-1,3,4,5-tetrahydro-benzo[d][1,3]-diazepin-2-one and 0.050 mL (0.29 mmol) DIPEA were heated with 1 mL MeOH in a microwave container for 2 h at 125° C. Then potassium-tert-butoxide was added and the mixture was stirred for 48 h at RT. Next, the reaction mixture was heated for a further 6 h and then it was neutralised with acetic acid and purified by preparative HPLC-MS.

Provenance & Evidence