Methanesulfonic Acid → 1,4-Bis[5-(3,5-dimethoxy-4-methylthiophenyl)-2-pyridyl]hexahydro-1,4-diazepine dimethanesulfonate

Participants

Reaction Steps

To a solution of 1,4-bis[5-(3,5-dimethoxy-4-methylthiophenyl)-2-pyridyl]hexahydro-1,4-diazepine (72.0 mg, 0.120 mmol) in methanol (5.0 mL) was added a 1.0 M aqueous methanesulfonic acid (0.24 mL, 0.24 mmol), and the reaction mixture was concentrated under reduced pressure. Ethanol (5.0 mL) was added to the residue, and the resulting mixture was concentrated under reduced pressure. Methanol-diethyl ether was added to the residue, and the resulting precipitate was collected to yield the title compound as a pale yellow crystalline powder (melting point: 212.0-217.0° C. (58.0 mg, yield: 61%).

Provenance & Evidence