In the presence of molecular sieve (MS) 4 Å in DMF, a catalyst-free aldol condensation of a variety of aromatic and aliphatic ketones with isatins under mild reaction conditions has been developed. This approach may provide access to a wide range of 3-substituted-3-hydroxyindolin-2-ones in good to excellent yields.
Synthesis and antimicrobial activity of some novel 2-thienyl substituted heterocycles
作者:Mohamed Salah K. Youssef、Ahmed Abdou O. Abeed
DOI:10.1515/hc-2013-0197
日期:2014.2.1
Abstract
A series of 2-thienyl substituted derivatives of thiazoles, oxazoles and spiro(indole-azole) were synthesized. The structures of the synthesized compounds were confirmed by IR, NMR and mass spectral data.
Molecular sieve mediated decarboxylative Mannich and aldol reactions of β-ketoacids
作者:Fangrui Zhong、Chunhui Jiang、Weijun Yao、Li-Wen Xu、Yixin Lu
DOI:10.1016/j.tetlet.2013.06.030
日期:2013.8
A molecular sieve mediated decarboxylativeMannichreaction of β-ketoacids with sulfonyl imines is reported; this protocol leads to an efficient preparation of synthetically useful β-amino ketones. An analogous molecular sieve promoted decarboxylative aldol reaction between β-ketoacids and isatins is also described, which affords bioactive 3-substituted-3-hydroxy-oxindoles in excellent yields.
Potential anticonvulsants. V. The condensation of isatins with<i>C</i>-acetyl heterocyclic compounds
作者:F. D. Popp
DOI:10.1002/jhet.5570190327
日期:1982.5
A number of C-acetyl heterocyclic compounds were condensed with isatin and substituted isatins to give a series of 3-hydroxy-3-substituted oxindoles. The products from 2-acetylfuran and isatin, 2-acetylthiophene and isatin, and 2-acetylpyridine and 1-methylisatin were active at 100 mg/Kg in the maximal electroshock seizure test.