Triethylamine → HCID 23353495, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 7-amino-1-(4-methyl-1-piperazinyl)-naphthalene (0.118 g, 0.489 mmol) and triethylamine (0.13 mL, 0.98 mmol) in acetonitrile (10 mL) was chilled to 0° C. and 4-triisopropylsilyloxybenzoyl chloride (0.16 g, 0.51 mmol) dissolved in methylene chloride was added all at once. The mixture was gently refluxed overnight; then 7-amino-1-(4-methyl-1-piperazinyl)-naphthalene (0.038 g, 0.16 mmol), 4-triisopropylsilyloxybenzoyl chloride (0.5 g, 1.6 mmol), and triethylamine (0.13 mL, 0.93 mmol) were added. The reaction was refluxed for an additional 24 hours, cooled and the solvent was removed at reduced pressure. The residue was partitioned between methylene chloride and saturated aqueous sodium bicarbonate and stirred vigorously for 5 hours. The phases were separated and the organic layer was washed with brine, dried over calcium sulfate and concentrated to a tan foam which was purified by flash chromatography on silica gel (1×3.5 inches). Elution with 25% ethyl acetate/hexane removed unweighed recovered acid chloride. Continued elution with an ethyl acetate/hexane gradient of from 1:3 to 3:1 followed by 100% ethyl acetate gave 0.238 g of 7-(4-triisopropylsilyloxybenzamido)-1-(4-methyl-1-piperazinyl)-naphthalene as a viscous tan oil.

Provenance & Evidence