4-Methylmorpholine → Boc-Leu-Glu-OtBu

Beteiligte Stoffe

Reaktionsschritte

To a solution of Boc-Leu-OSu and Glu-OtBu in DMF was added NMM and DMAP. The solution was stirred at ambient temperatures for 18 hours then the solvent was removed. Crude product was taken up in 100 ml CHCl3, washed 3× with pH 3 water (100 ml), once with water (100 ml) and once with brine (100 ml). Organic layer was dried with MgSO4 and filtered. Solvent was removed and solid was dried over vacuum. Solid was collected as a white powder (8.78 g, quant. yield, ˜80% purity TLC). Product was used directly without further characterization.

Herkunft & Nachweise