反应详情

温度

0 °C

0.38 ml of N-ethylmorpholine and 0.66 g of DCC are added, at 0° C., to a solution of 1.05 g of Z-Pro-Val-OH, 1.3 g of H-Lys(Boc)-Val-OtBu.HCl and 0.5 g of HOObt in 5 ml of dimethylformamide. The mixture is stirred at 0° C. for one hour and left to stand at room temperature overnight. The working-up is as in Example 8a. The residue is triturated with ether. The precipitate is filtered off with suction and dried.

1. waitleft
2. waitto stand at room temperature overnight
3. customThe residue is triturated with ether
4. filtrationThe precipitate is filtered off with suction
5. customdried