Aromatization of 1,4-dihydropyridines in the presence of toluenesulfonyl choloride/NaNO2/wet-SiO2 under microwave irradiation

被引：0

作者：

Niknam, Khodabakhsh ^{[1
]}

Zolfigol, Mohammah Ali

机构：

[1] Persian Gulf Univ, Fac Sci, Dept Chem, Bushehr 75168, Iran

[2] Bu Ali Sina Univ, Coll Sci, Dept Chem, Hamadan 65174, Iran

来源：

HETEROCYCLIC COMMUNICATIONS | 2006年 / 12卷 / 3-4期

关键词：

aromatization; 1,4-dihydropyridines; oxidation; toluenesulfonyl chloride; sodium nitrite; microwave irradiation; wet-SiO2;

D O I：

暂无

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A combination of toluenesulfonyl chloride and sodium nitrite in the presence of wet SiO2 was used as an effective oxidizing agent for the aromatization of 1,4-dihydropyridines to the corresponding pyridine derivatives under microwave irradiation in excellent yields. The oxidizing agent (NOX) in-situ generated in the presence of wet SiO2 that provided an effective heterogeneous surface area in this system.

引用

页码：183 / 186

页数：4

共 50 条

[31] Aromatization of Hantzsch 1,4-Dihydropyridines with Al(NO3)3•9H2O and/or Fe(NO3)3•9H2O in the Presence of Silica Sulfuric Acid Under Mild and Heterogeneous Conditions
Ghorbani-Choghamarani, Arash
Zeinivand, Javad
SYNTHETIC COMMUNICATIONS, 2010, 40 (16) : 2457 - 2463
[32] Oxidative aromatization of Hantzsch 1,4-dihydropyridines in the presence of a catalytic amount of Mn(pbdo)2Cl2/MCM-41 or Mn(pbdo)2Cl2/Al-MCM-41 as reusable and green catalysts
Heravi, Majid M.
Oskooie, Hossien A.
Malakooti, Reihane
Alimadadi, Behnoush
Alinejad, Hamideh
Behbahani, Farahnaz K.
CATALYSIS COMMUNICATIONS, 2009, 10 (06) : 819 - 822
[33] HgO/I2 as an efficient reagent for the oxidative aromatization of Hantzsch 1-NH, 4-dihydropyridines under mild and heterogeneous conditions
Montazerozohori, Morteza
Karami, Bahador
Habibi, Mohammad H.
SOUTH AFRICAN JOURNAL OF CHEMISTRY-SUID-AFRIKAANSE TYDSKRIF VIR CHEMIE, 2006, 59 : 62 - 64
[34] New strategy for the oxidation of Hantzsch 1,4-dihydropyridines and dihydropyrido[2,3-d]pyrimidines catalyzed by DMSO under aerobic conditions
Saini, Anil
Kumar, Sanjay
Sandhu, Jagir S.
SYNTHETIC COMMUNICATIONS, 2007, 37 (14) : 2317 - 2324
[35] N-Methyl-2-Chloropyridinium Iodide/NaNO2/Wet SiO2: Neutral Reagent System for the Nitration of Activated Aromatic Compounds under Very Mild Conditions
Azadi, Roya
Nazari-Far, Zahra
LETTERS IN ORGANIC CHEMISTRY, 2015, 12 (02) : 136 - 140
[36] Facile and efficient aromatization of 1,4-dihydropyridines with M(NO3)2•XH2O, TNCB, TBAP and HMTAI and preparation of deuterium labeled dehydronifedipine from nifedipine-d3
Shaikh, Ajam C.
Chen, Chinpiao
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS, 2010, 20 (12) : 3664 - 3668
[37] Surface Modification of Nano-SiO2 Particles with Polycarboxylate Ether-Based Superplasticizer under Microwave Irradiation
Huang, Chunlong
Wang, Dongmin
CHEMISTRYSELECT, 2017, 2 (29): : 9349 - 9354
[38] Degradation of surfactant wastewater under microwave irradiation in the presence of activated carbon assisted with nano-sized TiO2 or nano-sized ZnO
Zhang, Z.
Xu, D.
Shen, M.
Wu, D.
Chen, Z.
Ji, X.
Li, F.
Xu, Y.
WATER SCIENCE AND TECHNOLOGY, 2011, 63 (03) : 424 - 431
[39] PEG-N2O4 system as an efficient reagent both for the rapid oxidation of urazoles and 1,4-dihydropyridines under nonaqueous conditions
Zolfigol, Mohammad Ali
Ghaemi, Ezat
Madrakian, Elaheh
Niknam, Khodabakhsh
JOURNAL OF THE CHINESE CHEMICAL SOCIETY, 2008, 55 (03) : 704 - 711
[40] Reactivity of C4-indolyl substituted 1,4-dihydropyridines toward superoxide anion (O2(•)under-bar) in dimethylsulfoxide
Salazar, Ricardo
Navarrete-Encina, P. A.
Squella, J. A.
Camargo, C.
Nunez-Vergara, Luis J.
JOURNAL OF PHYSICAL ORGANIC CHEMISTRY, 2009, 22 (06) : 569 - 577

← 1 2 3 4 5 →