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Synthesis and application of modified silica sulfuric acid as a solid acid heterogeneous catalyst in Michael addition reactions

✍ Scribed by Mohammad Ali Zolfigol; Hojat Veisi; Farajollah Mohanazadeh; Alireza Sedrpoushan

Publisher
Journal of Heterocyclic Chemistry
Year
2011
Tongue
English
Weight
380 KB
Volume
48
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

Modified silica sulfuric acid (MSSA) as a new type of silica sulfuric acid was prepared and effectively used in the conjugate addition of indole, pyrrole, and thiols with Michael acceptors under mild conditions at room temperature. Also, MSSA was used as a catalyst for the synthesis of 1,1,3‐tri‐indolyl compounds in good to excellent yield at room temperature. J. Heterocyclic Chem., (2011).

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ChemInform Abstract: Synthesis and Appli
ChemInform Abstract: Synthesis and Application of Modified Silica Sulfuric Acid as a Solid Acid Heterogeneous Catalyst in Michael Addition Reactions.
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## Abstract The use of the modified, nonvolatile, inexpensive, and safe catalyst in the Michael addition reaction with indole (I), pyrrole (VI), and thiols (VIII)/(XI) is presented.

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Ξ±-Amino phosphonates were obtained in a one-pot, simple, and efficient method from the reaction between aldehyde, aniline, trialkyl phosphite, and silica sulfuric acid as a catalyst in acetonitrile at room temperature.