Methyl iodide → HCID 9880949, compound

Participants

Reaction Steps

Sodium hydride (8 mg of a 60% suspension in mineral oil, 4 mg, 0.19 mmol, 1.2 equiv) was added to a solution of 4-dimethylamino-N-(9-ethyl-9H-carbazol-3-yl)-butyramide (50 mg, 0.15 mmol, 1 equiv) in DMF (0.3 mL). The resultant suspension was stirred at room temperature for 1 hour, and then iodomethane (0.012 mL, 27 mg, 0.19 mmol, 1.25 equiv) was added via syringe. After an additional 5 hours at room temperature, the reaction mixture was diluted with water (5 mL) and extracted with ethyl acetate (3×5 mL). The combined extracts were washed with water (1×10 mL) and brine (1×10 mL), dried over anhydrous sodium sulfate and concentrated. The residue was purified by rotary chromatography (CH2Cl2 grading to 2% ammonium hydroxide in 5% MeOH/CH2Cl2) to provide 4-dimethylamino-N-(9-ethyl-9H-carbazol-3-yl)-N-methyl-butyramide (3 mg, 5%) as a yellow oil.

Provenance & Evidence