Diisopropylethylamine → N-(4-cyanophenyl)-3-methyl-N'-[9-(2-methylpropyl)-2,3,4,9-tetrahydro-1H-carbazol-6-yl]pentanediamide

Participants

Reaction Steps

To a solution of the compound obtained in Step 2 (235 mg, 0.97 mmol), 5-(4-cyanophenylamino)-3-methyl-5-oxopentanoic acid (239 mg, 0.97 mmol) and DIEA (0.508 mL, 2.91 mmol) in DMF (6 mL) was added HATU (553 mg, 1.45 mmol), and the mixture was stirred at room temperature for 14 hr. To the reaction solution was added water, and the mixture was extracted with ethyl acetate. The organic layer was washed with water and saturated brine, and dried, and the solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography (solvent gradient; 5 to 75% ethyl acetate/hexane) to give the title compound (242 mg, 0.515 mmol, 53.1%) as a white powder.

Provenance & Evidence