N,N,N',N'-Tetramethylethylenediamine → HCID 68234621, compound

Participants

Reaction Steps

Methanesulfonyl chloride (87 μL, 1.1 mmol, 1.1 equiv) dissolved in 2 mL ethyl acetate was added to a 20 dram vial. To this stirring mixture was added a mixture of tert-butyl-2-(4-fluorophenyl)-2-methylpropyl(5-(2-hydroxyethyl)pyridin-2-yl)-carbamate (414 mg, 1.1 mmol, 1.0 equiv), TMEDA (167 μL, 1.1 mmol, 1.1 equiv), and ethyl acetate (3 mL) in a dropwise manner. The reaction was stirred for 1 h. The reaction mixture was then filtered and washed with saturated sodium bicarbonate and brine. The organic layer was dried over Na2SO4, filtered, and concentrated. The resultant solid was dissolved in DMF (4 mL), followed by the addition of sodium azide (139 mg, 2.1 mmol, 2.0 equiv). The reaction was stirred for 24 h, then diluted with water (10 mL) and extracted with ethyl acetate (20 mL). The organic layer was dried over Na2SO4, filtered, and concentrated. The crude solid was dissolved in methanol, followed by the addition of 10% palladium on carbon (80 mg), potassium carbonate (100 mg). The reaction was stirred under 45 psi of hydrogen for 24 h, filtered, and concentrated to give tert-butyl 5-(2-aminoethyl)pyridin-2-yl(2-(4-fluorophenyl)-2-methylpropyl)carbamate.

Provenance & Evidence