These common heterocyclic compound, 17564-64-6, name is 2-(Chloromethyl)isoindoline-1,3-dione, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. name: 2-(Chloromethyl)isoindoline-1,3-dione
Under a protective nitrogen atmosphere, sodium hydride (NaH, 48 mg, 1.2 mmol) is added into a solution of berbamine dihydrochloride (205 mg, 0.3 mmol) in N,N-dimethyl formamide (5 ml) at 0 C., after being stirred for 1 hour, 2-chloromethyl-isoindoline-1,3-dione (88 mg, 0.45 mmol) is added therein. The reaction solution is heated to 80 C. overnight. Then the reaction mixture is evaporated under vacuum, and purified by a preparative thin layer chromatography to give white or pale yellow compound (BS-BE-001) (11.5 mg, 5.0%). [0105] LC/MS m/z: M+1 768.3 100% (purity). [0106] 1H NMR (CDCl3) delta:7.887.865 (dd, 2H, J=6.0 Hz, 5.5 Hz), 7.747.732 (dd, 2H, J=5.5 Hz, 6.0 Hz), 7.264 (s, 1H), 7.0196.998 (dd, 1H, J=8.5 Hz, 8.0 Hz) , 6.9196.903 (d, 1H, J=7.5 Hz), 6.716.698 (d, 1H, J=7.5 Hz), 6.626.614 (m, 1H), 6.527 (s, 1H), 6.4206.385 (m, 1H), 6.266 (s, 1H), 5.954 (s, 1H), 5.7665.717 (m, 2H), 3.850 (s, 2H), 3.750 (s, 3H), 3.610 (s, 3H), 3.4873.473 (m, 1H), 3.396 (s, 1H), 3.2413.203 (m, 2H), 3.113 (s, 3H), 3.0122.768 (m, 6H), 2.566 (s, 3H), 2.532 (s, 1H), 2.3832.271 (m, 1H), 2.216 (s, 1H), 1.7951.725 (m, 2H).
The synthetic route of 2-(Chloromethyl)isoindoline-1,3-dione has been constantly updated, and we look forward to future research findings.
Reference:
Patent; HANGZHOU BENSHENG PHARMACEUTICAL CO., LTD.; Xu, Rongzhen; Rong, Frank; Xie, Fuwen; Lai, Hongxi; US2013/158068; (2013); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem