Phenol → HCID 9923094, compound

Participants

Reaction Steps

(Chart E, Step 2): To a dry round bottom charged with a heterogeneous mixture of K2CO3 (40.77 mg, 0.30 mmol) and phenol (27.8 mg, 0.30 mmol) in DMF (1.5 mL) is added a solution of 1-[11-(2-bromoacetyl)-1,2,4,5-tetrahydro-3H-[1,4]diazepino[1,7-a]indol-3-yl]-2,2,2-trifluoro-1-ethanone in DMF (1.5 mL). After stirring at ambient temperature for 18 hours, aq. 1N NaOH (1 mL) is added at once to deprotect the indole in situ. The mixture is stirred for an hour then partitioned between water and ethyl acetate, the aqueous layer is extracted two more times with ethyl acetate. The organics are combined, dried with MgSO4, filtered and concentrated to 95 mg of a crude oil. The crude is purified by LC (230-400 silica gel) eluting with 0.5% NH4OH and 3.5% methanol in dichloromethane to afford 69 mg of 2-phenoxy-1-(2,3,4,5-tetrahydro-1H-[1,4]diazepino[1,7-a]indol-11-yl)-1-ethanone as a white solid. IR (drift) 1662, 1598, 1516, 1495, 1458, 1443, 1420, 1345, 1244, 1198, 1191, 1052, 975, 746, 688 cm−1.

Provenance & Evidence