Phenyl isocyanate → 6-hydroxy-6-phenethyl-N-phenyl-7-(trifluoromethyl)-3,4,6,7-tetrahydro-[1,4]diazepino[6,7,1-hi]indole-2(1H)-carboxamide

Participants

Reaction Conditions

Reaction Steps

Phenyl isocyanate (3.8 mg, 0.05 mmol) was added to a solution of 6-phenethyl-7-(trifluoromethyl)-1,2,3,4,6,7-hexahydro-[1,4]diazepino[6,7,1-hi]indol-6-ol trifluoroacetate (14 mg, 0.039 mmol) in THF (3 mL) containing triethylamine (11 mg, 0.11 mmol) at 0° C. The resulting mixture was stirred at 0° C. for 30 min, then stirred at room temperature overnight. The resulting mixture was concentrated under reduced pressure, the residue dissolved in ethyl acetate and the resulting solution was washed sequentially with water, NaHCO3 (sat'd. aq) and brine. The organic phase was dried (Na2SO4) and concentrated to yield 6-hydroxy-6-phenethyl-N-phenyl-7-(trifluoromethyl)-3,4,6,7-tetrahydro-[1,4]diazepino[6,7,1-hi]indole-2(1H)-carboxamide (MH+=482).

Provenance & Evidence