Water → HCID 67779655, compound

Participants

Reaction Conditions

Reaction Steps

In a mixture of water (0.5 mL) and ethyl acetate (1 mL)was dissolved 2-(chloromethyl)pyridine hydrochloride (246 mg, 1.5 mmol). This solution was neutralized with the addition of sodium hydrogencarbonate. The organic layer was separated, and the remaining aqueous layer was subjected to extraction twice with ethyl acetate. The organic layers were combined and dried over magnesium sulfate, followed by concentration under reduced pressure to give 2-(chloromethyl)pyridine. To a suspension of (3aR*,10aS*)-4-(phthalimidoacetyl)-2,3,3a,4,9,10a-hexahydrobenzo[b]cyclopenta[e][1,4]diazepin-10(1H)-one (389 mg, 1.0 mmol) in N,N-dimethylformamide (3 mL), which was cooled to 0° C., was added sodium hydride (60% liquid paraffin dispersion, 44 mg, 1.1 mmol). The mixture was stirred for 3 minutes at the same temperature and for 10 minutes at room temperature. To this mixture was added a solution of the 2-(chloromethyl)pyridine, which was produce by the above-mentioned procedure, in N,N-dimethylformamide (0.5 mL). The mixture was stirred for 3 hours at room temperature. To the reaction mixture was added water, and resulting precipitate was collected by filtration, which was recrystallized from chloroform-ethanol-diisopropylether to give 232 mg (yield 48%) of the titled compound, m.p. 227°-229° C.

Provenance & Evidence