DOTA synthesis
- Product Name:DOTA
- CAS Number:60239-18-1
- Molecular formula:C16H28N4O8
- Molecular Weight:404.42
3926-62-3
298 suppliers
$19.73/250g
294-90-6
535 suppliers
$5.00/1g
60239-18-1
314 suppliers
$9.00/250mg
Yield:60239-18-1 92.1%
Reaction Conditions:
in acetonitrile; for 6 h;Inert atmosphere;Reflux;
Steps:
10.4 Step (4): Preparation of compound 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid (DOTA) of formula 7
Keeping a slight positive pressure of nitrogen, 3L of acetonitrile and 149.02g (0.865mol) of the compound of formula 5 were added to the 5L reaction flask, and 477.57g (4.1mol) of sodium chloroacetate was added to it in batches with stirring. After the addition, the temperature was raised to reflux for reaction. The reaction was maintained under reflux for 6 hours, and the reaction was completed. The reaction solution was cooled to room temperature, filtered, and the filtrate was rotary evaporated to recover the solvent. The residue was recrystallized with an appropriate amount of toluene-acetonitrile (2:1, v/v) to obtain 323.32 g (0.797 mol) of white solid product. The yield is 92.1%, the total yield of the four-step reaction is 79.7%, Product titration purity: 99.7% (by HClO4),
References:
CN113956262,2022,A Location in patent:Paragraph 0177-0178; 0192-0197
64-69-7
157 suppliers
$14.00/5g
294-90-6
535 suppliers
$5.00/1g
60239-18-1
314 suppliers
$9.00/250mg
