Aromatization of Some 4-Substituted 2,6-Dimethyl-3,5-diethoxycarbonyl-1,4-dihydropyridines to Pyridines
نویسندگان
چکیده
منابع مشابه
Synthesis, characterization and anticonvulsant activity evaluation of some 1,4-dihydropyridines and 3,5-(substituted)oxycarbonyl-1,4-dihydro-2,6-dimethyl-N-[2-(4-sulfamoylphenylamino)-acetyl]-4-(substituted)pyridines.
A series of 3,5-(substituted)oxycarbonyl-1,4-dihydro-2,6-dimethyl-4-(substituted)pyridines (1a-j) were synthesized by Hantzsch method for pyridine synthesis. Treatment with chloroacetyl chloride produced N-(2-chloroacetyl)-3,5-(substituted)oxycarbonyl-1,4-dihydro-2,6-dimethyl-4-(substituted)pyridines (2a-e), which on further treatment with sulfanilamide resulted in 3,5-(substituted)oxycarbonyl-...
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Hantzsch 1, 4-dihydropyridines (1,4-DHPs) can be oxidized to the corresponding pyridine derivatives by thallium triacetate in high yields.
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Some 3, 5-diacyl or 3,5-diester 1,4-dihydropyridines were oxidized to the corresponding pyridine derivatives using hydrogen peroxide in aqueous ethanol in the presence of potassium bromide and acetic acid as the catalysts. The reaction was carried out in ethanol and products were isolated in high to excellent yields. However, oxidation of 3,5-diacetyl 1,4-dihydropyridines is slower than 3,5-die...
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Domestic microwave ovens as well as laboratory reactors have been successfully employed to prepare dialkyl 1,4-dihydropyridine-3,5-dicarboxylates and to induce the synthesis of the corresponding aromatic derivatives. In that latter particular case, unexpected results have been reported.
متن کاملoxidation of hantzsch 1,4- dihydropyridines to pyridines with thallium triacetate
hantzsch 1, 4-dihydropyridines (1,4-dhps) can be oxidized to the corresponding pyridine derivatives by thallium triacetate in high yields.
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1964
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.37.610