反应详情

1.08 gram of DTPA (2.7 mmol), 2 mL acetic anhydride and 1.3 mL pyridine were stirred for 48 hours at 60° C. and then the reaction mixture was filtered at room temperature. The solid product washed to be free of pyridine with acetic anhydride and then with diethyl ether, and is dried.

1. filtrationthe reaction mixture was filtered at room temperature
2. washThe solid product washed
3. dry with materialwith diethyl ether, and is dried