Chloroform → HCID 67349193, compound

Participants

Reaction Conditions

Reaction Steps

(S)-2-[3-(9-Methylthio-6-oxo-2,3,3a,4-tetrahydro-1H,6H-5,8,10,10b-tetraazabenzo[e]azulen-5-yl)phenyl]-1,3-oxazole-4-carboxamide (211 mg, 0.483 mmol) obtained in Step 1 was dissolved in pyridine (3 mL), and the mixture was stirred at 90° C. for 3.5 hours after adding p-toluenesulfonyl chloride (395 mg, 2.07 mmol). The mixture was diluted by addition of chloroform, and washed with 1 mol/L hydrochloric acid and saturated brine. The organic layer was dried over anhydrous magnesium sulfate, and the residue obtained upon concentration under reduced pressure was then purified by silica gel column chromatography to give (S)-5-[3-(4-cyano-1,3-oxazol-2-yl)phenyl]-9-methylthio-1,2,3,3a,4,5-hexahydro-5,8,10,10b-tetraazabenzo[e]azulen-6-one (155 mg, 77%).

Provenance & Evidence