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Synthesis and application of modified silica sulfuric acid as a solid acid heterogeneous catalyst in Michael addition reactions
Author(s) -
Zolfigol Mohammad Ali,
Veisi Hojat,
Mohanazadeh Farajollah,
Sedrpoushan Alireza
Publication year - 2011
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.659
Subject(s) - chemistry , sulfuric acid , catalysis , yield (engineering) , solid acid , pyrrole , michael reaction , indole test , organic chemistry , conjugate , heterogeneous catalysis , polymer chemistry , mathematical analysis , materials science , mathematics , metallurgy
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).