Water → 1-[2-methoxy-6-(4-methyl-2-oxo-2,3-dihydrobenzo[d]oxazol-6-yloxy)pyrimidin-4-yl]spiro-[piperidin-4,4'-pyrido[2,3-d][1,3]oxazin]-2'(1'H)-one

Participants

Reaction Steps

58 mg (0.23 mmol) spiro[piperidin-4,4′-pyrido[2,3-d][1,3]oxazin]-2′(1′H)-one hydrochloride, 70 mg (0.20 mmol) 6-(6-chloro-2-methoxypyrimidin-4-yloxy)-4-methylbenzo[d]oxazol-2(3H)-one and 0.10 mL DIPEA (0.57 mmol) in 1.0 mL DMF were stirred for 3 h at 90° C. The reaction mixture was mixed with water, the precipitate w suction filtered, washed and dried. The residue was purified by preparative HPLC-MS. The fractions containing product were combined and freeze-dried.

Provenance & Evidence