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Volume 6 (2018)
Volume 5 (2017)
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Volume 3 (2015)
Volume 2 (2014)
Keywords = 4-dihydropyridines
Number of Articles: 3
Nano Al2O3/KF using for synthesis of some Hantzsch type-products
Volume 6, Issue 3, pp. 218-324, Serial No. 20 , July 2018, , Pages 266-270
Abstract
A protocol for the synthesis of 1,4-dihydropyridines (Hantzsch type-products) was developed by means of a three-component condensation of an aldehyde, a β-dicarbonyl compound, ammonium acetate and nano Al2O3/KF as catalyst. This reaction was carried out under different conditions including i) solvent-free ... Read More)
H3PW12O40 as an efficient catalyst for one-pot- tricomponent synthesis of chromeno[4,3-b]quinolones under microwave irradiation
Volume 5, Issue 3, pp. 237-363, Serial No. 16 , July 2017, , Pages 338-344
Abstract
Some Chromeno[4,3-b]quinoline derivatives were synthesized in a tricomponents one-pot reaction of 1,3-cyclohexadione arylaldehydes and 4-aminocoumarin under Microwave irradiation in the solventless system by using a heteropolyacid catalyst ,H3[PW12O40] in 80-95% yields and high rates. The shorter reaction ... Read More![H3PW12O40 as an efficient catalyst for one-pot- tricomponent synthesis of chromeno[4,3-b]quinolones under microwave irradiation](javascript:loadModal('H3PW12O40 as an efficient catalyst for one-pot- tr ... ', 'data/icc/coversheet/81468180111.png'))
Oxidative aromatization of some 1,4-dihydropyridines by aqueous hydrogen peroxide in ethanol
Volume 3, Issue 2, pp. 72-147, Serial No. 7 , April 2015, , Pages 143-147
Abstract
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 ... Read More)