1,2-Dichloroethane → tert-Butyl (1R)-2-amino-1-(1H-indol-3-ylmethyl)-2-oxoethylcarbamate

Beteiligte Stoffe

Reaktionsschritte

A solution of N-Boc-D-tryptophan (1.00 g, 3.29 mmol), HOBt monohydrate (0.600 g, 3.92 mmol) and EDC (0.820 g, 4.27 mmol) in DMF (12 mL) was stirred at room temperature for 2 h, conc. NH4OH (1.10 mL, ca. 15.4 mmol) was added. The mixture was stirred for 18 h. Water and EtOAc were added. The organic phase was separated, washed with 5% NaHCO3, dried over Na2SO4, concentrated in vacuo to give (R)-tert-butyl 1-amino-3-(1H-indol-3-yl)-1-oxopropan-2-ylcarbamate (0.963 g)

Herkunft & Nachweise