[C:1]([N:8]([CH2:12][CH2:13][OH:14])[CH2:9][CH2:10][OH:11])([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].C(N(CC)CC)C.Cl[C:23](Cl)([O:25]C(=O)OC(Cl)(Cl)Cl)Cl>ClCCl>[C:1]([N:8]1[CH2:9][CH2:10][O:11][C:23](=[O:25])[O:14][CH2:13][CH2:12]1)([O:3][C:4]([CH3:6])([CH3:7])[CH3:5])=[O:2]The procedure of Example 1 was followed using N-boc diethanolamine (3 g, 14.6 mmol), triethylamine (4.1 mL, 29.2 mmol), dry dichloromethane (100 mL) and triphosgene (1.4 g, 4.9 mmol). The filtrate was concentrated yielding only oligomeric compounds.
Wird geladen…