These common heterocyclic compound, 3484-35-3, name is 5-Methylindolin-2-one, 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. Quality Control of 5-Methylindolin-2-one
General procedure: To a solution of appropriate oxindole (8a-e, 0.3 mmol) in ethanol (3 mL) was addedcorresponding aldehyde (12a-h, 0.32 mmol) and a catalytic amount of piperidine. The reactionmixture was stirred at reflux for 6-12 h (monitored by TLC). After cooling, the precipitate wasfiltered, washed with cold ethanol, and dried in air to furnish pure (Z)-3-(4′-(aminoalkoxy)-3′-methoxybenzylidene)indolin-2-one title compounds of formula (5a-t) as yellow/brown/orangesolids in moderate to excellent yields.
The synthetic route of 5-Methylindolin-2-one has been constantly updated, and we look forward to future research findings.
Reference:
Article; Senwar, Kishna Ram; Reddy, T. Srinivasa; Thummuri, Dinesh; Sharma, Pankaj; Bharghava, Suresh K.; Naidu; Shankaraiah, Nagula; Bioorganic and Medicinal Chemistry Letters; vol. 26; 16; (2016); p. 4061 – 4069;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem