Triethylamine → HCID 58923881, compound

Participants

Reaction Steps

Methanesulfonyl chloride (198 mg, 1.73 mmol) was added to a solution of 3,4-dimethyl-7,8,9,10-tetrahydro-6H-pyrido[3′,4′:4,5]imidazo[1,2-a][1,4]diazepin-1-amine dihydrochloride (400 mg, 1.31 mmol) and triethylamine (350 mg, 3.46 mmol) in DMF (250 mL) and stirred overnight at ambient temperature. The reaction mixture was concentrated under reduced pressure and adsorbed onto silica gel. The material was purified by column chromatography on silica gel, concentrated under reduced pressure, dissolved in dimethyl sulfoxide (DMSO), and purified by reverse phase prep HPLC (eluting with 0.5% formic acid in water/0.5% formic acid in acetonitrile in a 10-minute gradient from 5:95 to 95:5) using a HPLC purification system obtained from Shimadzu corporation (based in Kyoto, Japan) to afford 135 mg of 3,4-dimethyl-9-(methylsulfonyl)-7,8,9,10-tetrahydro-6H-pyrido[3′,4′:4,5]imidazo[1,2-a][1,4]diazepin-1-amine. HRMS (EI) calcd for C13H19N5O2S 310.1338, found 310.1346.

Provenance & Evidence