Synthetic Route of 13220-46-7,Some common heterocyclic compound, 13220-46-7, name is 4-Methylindolin-2-one, molecular formula is C9H9NO, 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.
Example 3 3-(3H-Isobenzofuran-1-ylidene)-4-methyl-1,3-dihydro-indol-2-one To a solution containing 4-methyloxindole (0.15 g, 1.02 mmol) and phthalide (0.178 g, 1.33 mmol) in 3.0 mL DMF was added 2.14 mL of sodium hexamethyldisilazane (1.0 M in tetrahydrofuran (THF)) over 1 min. The solution was stirred at room temperature for 30 min and then poured into 50 mL of 4% HCl to give a yellow solid. The aqueous mixture was extracted with EtOAc and the organic phase washed with saturated NaHCO3, H2O, dilute HCl, brine and the solution dried with Na2SO4. The solvent was removed in vacuo and the solid obtained was purified by chromatography (silica gel, CHCl3/EtOAc, 7:3). The solid obtained was recrystallized from EtOAc/hexanes to afford the title compounds (3.8 mg) as a yellow solid.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 4-Methylindolin-2-one, its application will become more common.
Reference:
Patent; Allergan Sales, LLC; US6541504; (2003); B1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem