Ethyl bromoacetate → (s)-[But-3-enyl-(1-phenyl-ethyl)-amino]-acetic acid ethyl ester

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a solution of But-3-enyl-((S)-1-phenyl-ethyl)-amine (6.37 g, 36.4 mmol) in 150 mL of DMF at 0° C. is added K2CO3 (10.0 g, 72.8 mmol) in small portions. After stirring at 0° C. for 10 min, ethylbromoacetate (8.35 g, 54.6 mmol) izs added slowly. The reaction mixture, a white suspension, is stirred at r.t. overnight/16 hrs. The solution is diluted with 200 mL of ether, and washed with 3×100 ml of water. The crude product is purified by chromatography (hexane/CH2Cl2: 50/50) to give a pale liquid(8.5 g, 94.5%). (NMR and MS data confirmed, U-4117-58).

Herkunft & Nachweise