Triethylamine → HCID 9824760, compound

Participants

Reaction Steps

4-(Trifluoroacetyl)benzoic acid (0.50 g, 2.4 mmol) was dissolved in thionyl chloride (15 mL) and heated at reflux for 20 min. The excess of thionyl chloride was evaporated in vacuo, the residue was treated with toluene and again the solvent was removed in vacuo. Crude acid chloride (97 mg, 0.43 mmol) was dissolved in methylene chloride (5 mL) and added dropwise to an ice-cooled solution of (R)-2-amino-8-(4-methylpiperazin-1-yl)-1,2,3,4-tetrahydronaphthalene (100 mg, 0.41 mmol) and triethylamine (85 μL, 0.61 mmol) in methylene chloride (35 mL). After the addition, the reaction was allowed to stir at ambient temperature for 15 min and was then washed with dilute aqueous sodium hydrogen carbonate. The phases were separated and the organic phase was dried (Na2SO4), filtered and evaporated in vacuo to give a crude product which was purified on a silica gel column using chloroform/ethanol saturated with NH3 (100:3) as the eluent. Yield: 98 mg (54%) of the title compound as slightly yellow crystals: mp 91-93° C.; [α]21D -47° (c 1.0, chloroform); EIMS (70 eV) m/z (relative intensity) 453 (27, M+).

Provenance & Evidence