An efficient, high yielding method has been developed for the synthesis of diversity tetrahydro-4H-indol-4-one derivatives via a three component, one pot domino reaction from cyclohexane-1,3-diones, amines and nitrostyrenes using carbon functionalized with sulfonic acid group carbonaceous material as catalyst for the first time. The reaction was carried out in water, affording good to excellent yields in short time. The advantages of atom and step economy, green, and scope make this reaction a powerful tool for assembling heterocyclic scaffolds of general chemical and biomedical interest. (C) 2014 Elsevier B.V. All rights reserved.
Synthesis of substituted 1,3-diaryl-6,7-dihydro-1H-indol-4(5H)-ones from 1-aryl-2-arylaminoethanones
A simple and novel method for the synthesis of 1,3-diaryl-6,7-dihydro-1H-indol-4(5H)-ones from 1-aryl-2-arylaminoethanones and substituted cyclohexane-1,3-diones through acetic acid mediated reaction is disclosed.