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Acid–Base Bifunctional Catalytic Surfaces for Nucleophilic Addition Reactions
Author(s) -
Motokura Ken,
Tada Mizuki,
Iwasawa Yasuhiro
Publication year - 2008
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.200800126
Subject(s) - bifunctional , catalysis , amine gas treating , chemistry , nucleophile , base (topology) , organic base , bifunctional catalyst , acid–base reaction , organic reaction , nucleophilic addition , organic chemistry , homogeneous , combinatorial chemistry , mathematical analysis , mathematics , physics , thermodynamics
This article illustrates the modification of oxide surfaces with organic amine functional groups to create acid–base bifunctional catalysts, summarizing our previous reports and also presenting new data. Immobilization of organic amines as bases on inorganic solid–acid surfaces afforded highly active acid–base bifunctional catalysts, which enabled various organic transformations including CC coupling reactions, though these reactions did not proceed with either the homogeneous amine precursors or the acidic supports alone. Spectroscopic characterization, such as by solid‐state MAS NMR and FTIR, revealed not only the interactions between acidic and basic sites but also bifunctional catalytic reaction mechanisms.