A Synthetic Route to 2-Alkyl Indoles via Thiophenol-Mediated Ring-Opening of N-Tosylaziridines Followed by Copper Powder-Mediated C-N Cyclization/Aromatization

被引:39
作者
Sayyad, Masthanvali [1 ]
Nanaji, Yerramsetti [1 ]
Ghorai, Manas K. [1 ]
机构
[1] Indian Inst Technol, Dept Chem, Kanpur 208016, Uttar Pradesh, India
关键词
PALLADIUM-CATALYZED REACTIONS; ACTIVATED AZIRIDINES; BOND FORMATION; ROOM-TEMPERATURE; DIAZO-COMPOUNDS; DOMINO REACTION; H ACTIVATION; ARYL IODIDES; CYCLIZATION; 2H-AZIRINES;
D O I
10.1021/acs.joc.5b02251
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A simple strategy for the syntheses of 2-alkyl indoles via regioselective ring-opening of 2-(2-haloaryl)-3-alkyl-N-tosylaziridines with thiophenol, followed by copper powder-mediated intramolecular C-N cyclization and subsequent aromatization by the elimination of thiophenol, with good yields is described. Utilizing this protocol, 2-carboxyindole has been synthesized easily.
引用
收藏
页码:12659 / 12667
页数:9
相关论文
共 72 条
[31]   Simple indole alkaloids and those with a nonrearranged monoterpenoid unit [J].
Higuchi, Kazuhiro ;
Kawasaki, Tomomi .
NATURAL PRODUCT REPORTS, 2007, 24 (04) :843-868
[32]   Practical methodologies for the synthesis of indoles [J].
Humphrey, Guy R. ;
Kuethe, Jeffrey T. .
CHEMICAL REVIEWS, 2006, 106 (07) :2875-2911
[33]   Fe(II)-Catalyzed Amination of Aromatic C-H Bonds via Ring Opening of 2H-Azirines: Synthesis of 213-Disubstituted Indoles [J].
Jana, Samaresh ;
Clements, Mack D. ;
Sharp, Barry K. ;
Zheng, Nan .
ORGANIC LETTERS, 2010, 12 (17) :3736-3739
[34]   Bromine-catalyzed aziridination of olefins. A rare example of atom-transfer redox catalysis by a main group element [J].
Jeong, JU ;
Tao, B ;
Sagasser, I ;
Henniges, H ;
Sharpless, KB .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (27) :6844-6845
[35]   Copper/N,N-Dimethylglycine Catalyzed Goldberg Reactions Between Aryl Bromides and Amides, Aryl Iodides and Secondary Acyclic Amides [J].
Jiang, Liqin .
MOLECULES, 2014, 19 (09) :13448-13460
[36]   A Facile and Practical Copper Powder-Catalyzed, Organic Solvent- and Ligand-Free Ullmann Amination of Aryl Halides [J].
Jiao, Jiao ;
Zhang, Xi-Ru ;
Chang, Ning-Hui ;
Wang, Jie ;
Wei, Jun-Fa ;
Shi, Xian-Ying ;
Chen, Zhan-Guo .
JOURNAL OF ORGANIC CHEMISTRY, 2011, 76 (04) :1180-1183
[37]   Palladium-Catalyzed Direct 2-Alkylation of Indoles by Norbornene-Mediated Regioselective Cascade C-H Activation [J].
Jiao, Lei ;
Bach, Thorsten .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (33) :12990-12993
[38]   Regio- and stereocontrolled synthesis of novel 3-sulfonamido-2,3,4,5-tetrahydro-1,5-benzothiazepines from 2-(bromomethyl)- or 2-(sulfonyloxymethyl)aziridines [J].
Karikomi, Michinori ;
D'hooghe, Matthias ;
Verniest, Guido ;
De Kimpe, Norbert .
ORGANIC & BIOMOLECULAR CHEMISTRY, 2008, 6 (11) :1902-1904
[39]   Biomedical Importance of Indoles [J].
Kaushik, Nagendra Kumar ;
Kaushik, Neha ;
Attri, Pankaj ;
Kumar, Naresh ;
Kim, Chung Hyeok ;
Verma, Akhilesh Kumar ;
Choi, Eun Ha .
MOLECULES, 2013, 18 (06) :6620-6662
[40]   Copper-Catalyzed Synthesis of Substituted Quinolines via C-N Coupling/Condensation from ortho-Acylanilines and Alkenyl Iodides [J].
Kong, Lingkai ;
Zhou, Yuanyuan ;
Huang, He ;
Yang, Yang ;
Liu, Yuanyuan ;
Li, Yanzhong .
JOURNAL OF ORGANIC CHEMISTRY, 2015, 80 (02) :1275-1278