In the chemical reaction process,reaction time,type of solvent,can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product.An updated downstream synthesis route of 36216-80-5,Benzo[d]isoxazol-3-amine, as follows.36216-80-5
(2) Bis(2,2,2-trichloroethyl) 1,2-benzisoxazol-3-ylimidodicarbonate; To a solution of 1,2-benzisoxazol-3-amine (4.00 g, 29.8 mmol) and pyridine (7.25 ml, 89.6 mmol) in tetrahydrofuran (100 ml) was added under ice-cooling, 2,2,2-trichloroethyl chloroformate (8.20 ml, 59.6 mmol), and the mixture was stirred under ice-cooling for 1 hour and at room temperature for 20 minutes. The reaction mixture was poured to water and extracted with ethyl acetate. The extract was washed with water and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure. To the residue was added hexane to give 13.3 g (91.7%) of the desired product as a solid. 1H-NMR (CDCl3) delta; 4.82 (4H, s), 7.36 – 7.44 (1H, m), 7.59 – 7.65 (3H, m).
According to the analysis of related databases, Benzo[d]isoxazol-3-amine, the application of this compound in the production field has become more and more popular.
Reference£º
Patent; Takeda Pharmaceutical Company Limited; EP1813606; (2007); A1;,
Benzisoxazole – Wikipedia
Benzisoxazole – an overview | ScienceDirect Topics