Triethyl 2,2',2''-(1,4,7,10-tetraazacyclododecane-1,4,7-triyl)triacetate → HCID 15299094, compound
Reaction equation
[CH2:1]([O:3][C:4]([CH2:6][N:7]1[CH2:18][CH2:17][NH:16][CH2:15][CH2:14][N:13]([CH2:19][C:20]([O:22][CH2:23][CH3:24])=[O:21])[CH2:12][CH2:11][N:10]([CH2:25][C:26]([O:28][CH2:29][CH3:30])=[O:27])[CH2:9][CH2:8]1)=[O:5])[CH3:2].[CH2:31]([N:42]([CH2:47][CH:48]1[CH2:50][O:49]1)[S:43]([CH3:46])(=[O:45])=[O:44])[CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][CH3:41]>C(O)C>[CH2:31]([N:42]([S:43]([CH3:46])(=[O:45])=[O:44])[CH2:47][CH:48]([OH:49])[CH2:50][N:16]1[CH2:15][CH2:14][N:13]([CH2:19][C:20]([O:22][CH2:23][CH3:24])=[O:21])[CH2:12][CH2:11][N:10]([CH2:25][C:26]([O:28][CH2:29][CH3:30])=[O:27])[CH2:9][CH2:8][N:7]([CH2:6][C:4]([O:3][CH2:1][CH3:2])=[O:5])[CH2:18][CH2:17]1)[CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][CH2:37][CH2:38][CH2:39][CH2:40][CH3:41]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
200 ml of absolute ethanol is poured over 8.61 g (20 mmol) of N,N',N"-tris-(ethoxycarbonylmethyl)-1,4,7,10-tetraazacyclododecane (produced according to DE 36 25 417 A1) in a bomb tube. After 6.11 g (20 mmol) of N-undecyl-N-[(2-oxiranyl)-methyl]-methanesulfonic acid amide is added (Example 2c), the bomb tube is closed, flushed with nitrogen, and the resulting reaction mixture is heated for 16 hours to 90° C. After the reaction (TLC control) is completed, the solvent is evaporated in a vacuum and the yellowish, oily residue is chromatographed on silica gel (eluent: chloroform/methanol; methanol: 0-80%).