Ethyl orthoformate → HCID 67351503, compound

Participants

Reaction Conditions

Reaction Steps

(S)-3-(9-Methylthio-6-oxo-2,3,3a,4-tetrahydro-1H,6H-5,8,10,10b-tetraazabenzo[e]azulen-5-yl)benzoic hydrazide (200 mg, 0.52 mmol) obtained in Step 2 was suspended in triethyl orthoformate (10 mL), and the mixture was stirred at 100° C. for 24 hours. The residue obtained by concentrating the mixture under reduced pressure was then purified by silica gel column chromatography to give (S)-9-methylthio-5-[3-(1,3,4-oxadiazol-2-yl)phenyl]-1,2,3,3a,4,5-hexahydro-5,8,10,10b-tetraazabenzo[e]azulen-6-one (165 mg, 80%).

Provenance & Evidence