With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.3621-81-6,2,5-Dichlorobenzooxazole,as a common compound, the synthetic route is as follows.
To a solution of 2,5-dichlorobenzo[d]oxazole (5 g, 26.6 mmol) in dry dichloromethane (50 ml_) was added 2M dimethylamine in THF (26.6 mL, 53.2 mmol), and the mixture was cooled to 0C. To this cold reaction mixture was added triethylamine (5.6 mL, 39.9 mmol) drop-wise and the mixture was allowed to stir at room temperature for 4 h. After the completion of the reaction, the reaction mixture was treated with H20 (2 x 20 mL) and extracted with dichloromethane. The organic layer was separated, dried over Na2S04, filtered and evaporated to afford a white solid which was triturated with diethyl ether to afford the titlecompound (4.9 g, 94 %). (0493) MS: 197.2 (M+H)+. (0494) 1H-NMR (400 MHz, DMSO-c/6) d = 7.40 (d, J = 8.40 Hz, 1 H), 7.30 (d, J = 2.00 Hz, 1 H), 6.99- 6.99 (m, 1 H), 3.13 (s, 6H).
As the paragraph descriping shows that 3621-81-6 is playing an increasingly important role.
Reference£º
Patent; AC IMMUNE SA; NAMPALLY, Sreenivasachary; GABELLIERI, Emanuele; MOLETTE, Jerome; (220 pag.)WO2019/134978; (2019); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem