Potassium Cyanide → HCID 67434460, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of (2R,4S,4aS)-rel-11-fluoro-2,4-dimethyl-8-(methylsulfonyl)-1,2,4,4a-tetrahydro-2′H,6H-spiro[1,4-oxazino[4,3-a][1,2]oxazolo[4,5-g]quinoline-5,5′-pyrimidine]-2′,4′,6′(1′H,3′H)-trione (Example 182, 1.0 g, 2.15 mmol) in DMF was added KCN (700 mg, 10.75 mmol) followed by 18-crown-6 (catalytic) and the mixture was heated at 85° C. for 12 hours. The reaction mixture was cooled to room temperature and precipitated with diethyl ether (repeated twice to remove complete DMF). The precipitate was dissolved in EtOAc (50 mL) and washed with water (2×10 mL), dried over anhydrous sodium sulfate and, filtered, concentrated. The residue was purified by ‘combiflash instrument’ to give product as a pale yellow solid.

Provenance & Evidence