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General procedure: To a solution of appropriate oxindole (7a-e, 0.3 mmol) in ethanol (3 mL) was added corresponding aldehydes (11a-e,0.32 mmol) and a catalytic amount of piperidine. The reaction mixture was stirred at reflux for 6-12 h (reaction monitored byTLC). After cooling, the precipitate was filtered, washed with cold ethanol, and dried in air to furnish pure (Z)-3-(3′-methoxy-4′-(2-amino-2-oxoethoxy)-benzylidene)indolin-2-ones title compounds of formula (4a-v) as yellow/brown/orange solids in moderate to excellent yields.
Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.Read on for other articles about 3484-35-3.
Reference:
Article; Senwar, Kishna Ram; Reddy, T. Srinivasa; Thummuri, Dinesh; Sharma, Pankaj; Naidu; Srinivasulu, Gannoju; Shankaraiah, Nagula; European Journal of Medicinal Chemistry; vol. 118; (2016); p. 34 – 46;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem