H<sub>2</sub>O<sub>2</sub> Oxidation of 1,4-Dihydropyridines over Mg<sup>2+</sup> Ion Exchanged Clinoptilolite and Solventless Solid State Acid Decomposition of Ester to 3,5-Pyridinedicarboxylic Acid
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چکیده
منابع مشابه
[H2O2 oxidation of 1,4-dihydropyridines over Mg2+ ion exchanged clinoptilolite and solventless solid state acid decomposition of ester to 3,5-pyridinedicarboxylic acid].
The acid property of alkali and alkali earth cation exchanged clinoptiolites were observed by micro-calorimetry of NH(3) adsorption at 200 degrees C. The reaction rates on decomposition of tert-butyl acetate (TBA) over clinoptilolites was proportional to the acid strength. 1,4-Dihydropyridines were oxidized to corresponding Pyridines in high yields at room temperature by H(2)O(2) aqueous soluti...
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A simple and mild one-pot three-component reaction for the preparation 1,4-dihydropyridines has been developed from various aldehyde substrates, 1,3-dicarbonyl compounds (dimedone) and ammonium acetate (Hantzsch method) in the presence of a catalytic amount of phospho sulfonic acid (PSA) as an efficient and heterogeneous solid acid in EtOH at room temperature. Preparation of PSA is straightforw...
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چکیده ندارد.
15 صفحه اولPhospho sulfonic acid: an efficient solid acid catalyst for the facile preparation of 1,4-dihydropyridines
A simple and mild one-pot three-component reaction for the preparation 1,4-dihydropyridines has been developed from various aldehyde substrates, 1,3-dicarbonyl compounds (dimedone) and ammonium acetate (Hantzsch method) in the presence of a catalytic amount of phospho sulfonic acid (PSA) as an efficient and heterogeneous solid acid in EtOH at room temperature. Preparation of PSA is straightforw...
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ژورنال
عنوان ژورنال: YAKUGAKU ZASSHI
سال: 2009
ISSN: 0031-6903,1347-5231
DOI: 10.1248/yakushi.129.1249