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
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
收藏
页码:183 / 186
页数:4
相关论文
共 50 条
  • [21] OXIDATIVE AROMATIZATION OF HANTZSCH 1,4-DIHYDROPYRIDINES BY H2O2/V2O5 AT ROOM TEMPERATURE
    Su, Jinlong
    Zhang, Cai
    Lin, Dan
    Duan, Yiqin
    Fu, Xiangkai
    Mu, Ruizhu
    SYNTHETIC COMMUNICATIONS, 2010, 40 (04) : 595 - 600
  • [22] Oxidative-aromatization of Hantzsch ester 1,4-dihydropyridines by KBrO3/CoCL2•6H2O under mild condition
    Dilmaghani, Karim Akbari
    Zeynizadeh, Behzad
    mirzaei, Mansoor
    HETEROCYCLIC COMMUNICATIONS, 2007, 13 (2-3) : 139 - 142
  • [23] A novel micro-flow system under microwave irradiation for continuous synthesis of 1,4-dihydropyridines in the absence of solvents via Hantzsch reaction
    He, Wei
    Fang, Zheng
    Zhang, Kai
    Tu, Tao
    Lv, Niuniu
    Qiu, Chuanhong
    Guo, Kai
    CHEMICAL ENGINEERING JOURNAL, 2018, 331 : 161 - 168
  • [24] Silica sulfuric acid promoted aromatization of 1,2-dihydroquinolines by using NaNO2 as oxidizing agent under mild and heterogeneous conditions
    Niknam, Khodabakhsh
    Karami, Bahador
    Zolfigol, Mohammad All
    CATALYSIS COMMUNICATIONS, 2007, 8 (09) : 1427 - 1430
  • [25] Regioselective synthesis of 1-aryl-2-p-toluenesulfonyl hydrazides under microwave irradiation
    Li, Yanqiu
    Wang, Yulu
    Li, Jianping
    Wang, Jinye
    Journal of Sulfur Chemistry, 2007, 28 (02) : 177 - 180
  • [26] Oxidative-aromatization of Hantzsch ester 1,4-dihydropyridines by KBrO3/SnCl4•5H2O under mild condition
    Zeynizadeh, B
    Dilmaghani, KA
    Roozijoy, A
    SYNTHETIC COMMUNICATIONS, 2005, 35 (04) : 557 - 562
  • [27] Aromatization of hantzsch 1,4-dihydropyridine with bismuth(III) chloride supported onto wet HZSM-5 zeolite under microwave irradiation in solventless system
    Heravi, MM
    Ghassemzadeh, M
    PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS, 2005, 180 (02) : 347 - 351
  • [28] Synthesis of benzo[c][2,7]naphthyridine-6-ones via cascade aromatization/C(sp2)-H amidation of 1,4-dihydropyridines
    Luo, Laichun
    Wang, Qiang
    Peng, Xiaozhi
    Hu, Chunling
    Wang, Hong
    TETRAHEDRON LETTERS, 2017, 58 (28) : 2792 - 2795
  • [29] N,N′-ethylene-bis(benzoylacetoniminato) copper (II), Cu(C22H22N2O2), a new reagent for aromatization of Hantzsch 1,4-dihydropyridines
    Dehghanpour, Saeed
    Heravi, Majid M.
    Derikvand, Fatemeh
    MOLECULES, 2007, 12 (03) : 433 - 438
  • [30] 3,4-Dihydro-2H-pyran promoted aerobic oxidative aromatization of 1,3,5-trisubstituted pyrazolines and Hantzsch 1,4-dihydropyridines
    Banerjee, Dipanwita
    Kayal, Utpal
    Karmakar, Rajiv
    Maiti, Gourhari
    TETRAHEDRON LETTERS, 2014, 55 (38) : 5333 - 5337