Triethylamine → HCID 21833772, compound

Participants

Reaction Steps

2'-Methyl-4'-(1-methylimidazol-2-yl)biphenyl-4-carboxylic acid (D90, 310 mg, 1.06 mmol) was heated at reflux in thionyl chloride (10 ml) for 30 minutes, cooled, evaporated in vacuo and the orange residue redissolved in dry THF (10 ml). 1'-Methyl-2,3,6,7-tetrahydrospiro[furo[2,3-f]indole-3,4'-piperidine] (D8, 260 mg, 1.06 mmol) and triethylamine (0.15 ml, 1.06 mmol) were added and the mixture stirred for 72 hours. The mixture was evaporated in vacuo, the residue partitioned between H2O and CHCl3 (4 times) and the organics combined, dried over Na2SO4, filtered and evaporated in vacuo. The residue was purified by flash silica-gel chromatography with 2% MeOH/CHCl3 as eluant to yield the title compound as a pale yellow gum (224 mg, 41%) which was converted to the hydrochloride salt.

Provenance & Evidence