Sodium hydride → 3-tert-butoxycarbonyl-7-chloro-6-(thiophen-2-ylthiomethyl)-2,3,4,5-tetrahydro-1H-benzo[d]azepine

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Reaction Conditions

Reaction Steps

Suspend sodium hydride (20 mg, 60% dispersion in mineral oil) in anhydrous DMF (2 mL) and add thiophene-2-thiol (35 mg, 0.38 mmol) at room temperature. After 5 min add 3-tert-butoxycarbonyl-7-chloro-6-chloromethyl-2,3,4,5-tetrahydro-1H-benzo[d]azepine (150 mg, 0.38 mmol) and catalytic potassium iodide (1 mg) in anhydrous DMF (1 mL) and stir at 45° C. for 13 h. Cool the mixture to room temperature and partition between brine and EtOAc. Dry the organic layer over Na2SO4, filter and concentrate in vacuo. Purify the crude mixture by chromatography on silica gel eluting with hexane/EtOAc (1:0 to 7:3 gradient) to give 3-tert-butoxycarbonyl-7-chloro-6-(thiophen-2-ylthiomethyl)-2,3,4,5-tetrahydro-1H-benzo[d]azepine (110 mg).

Provenance & Evidence