On the Stereoselectivity of Alkenoxyl Radical 6-exo-trig Cyclizations

被引:11
|
作者
Schneiders, Nina [1 ]
Gottwald, Thomas [1 ]
Hartung, Jens [1 ]
机构
[1] Tech Univ Kaiserslautern, Fachbereich Chem, D-67663 Kaiserslautern, Germany
关键词
Radical reactions; Alkoxyl radical; Carbon radical; Bromination; Cyclization; Stereoselective synthesis; Stereochemical analysis; RING-CLOSURE; SUBSTITUENTS; GENERATION; OXIDATION; ALCOHOLS; POLAR;
D O I
10.1002/ejoc.200801116
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The investigated set of 6-exo-trig cyclizations occurs irreversibly and justifies the use of tetrahydropyran-derived transition structures for rationalizing 2,6-cis, 2,5-trans, and 2,4-cis stereoselectivity in ring-closure reactions of 1-, 2-, and 3-phenyl-6-methyl-5-hepten-1-oxyl radicals. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
引用
收藏
页码:797 / 800
页数:4
相关论文
共 50 条
  • [21] A Base-Mediated 6-exo-trig versus 6-exo-dig Carbocyclization Strategy for the Synthesis of Functionalized Biaryl Compounds
    Yadav, Pratik
    Shaw, Ranjay
    Panwar, Rahul
    Sahu, Satya Narayan
    Kumar, Abhinav
    Pratap, Ramendra
    [J]. ASIAN JOURNAL OF ORGANIC CHEMISTRY, 2017, 6 (10) : 1394 - 1397
  • [22] 5-Endo-trig radical cyclizations
    Ishibashi, H
    Sato, T
    Ikeda, M
    [J]. SYNTHESIS-STUTTGART, 2002, (06): : 695 - 713
  • [23] Aryl λ3-Iodane-Mediated 6-exo-trig Cyclization to Synthesize Highly Substituted Chiral Morpholines
    Vandavasi, Jaya Kishore
    Hu, Wan-Ping
    Senadi, Gopal Chandru
    Chen, Hui-Ting
    Chen, Hsing-Yin
    Hsieh, Kuang-Chan
    Wang, Jeh-Jeng
    [J]. ADVANCED SYNTHESIS & CATALYSIS, 2015, 357 (13) : 2788 - 2794
  • [24] Regio- and stereoselective 6-exo-trig radical cyclisations onto chiral perhydro-1,3-benzoxazines:: synthesis of enantiopure 3-alkylpiperidines
    Pedrosa, R
    Andrés, C
    Duque-Soladana, JP
    Rosón, CD
    [J]. TETRAHEDRON-ASYMMETRY, 2000, 11 (13) : 2809 - 2821
  • [25] Radical-mediated 5-Exo-Trig cyclizations of 3-silylhepta-1,6-dienes
    James, P
    Schenk, K
    Landais, Y
    [J]. JOURNAL OF ORGANIC CHEMISTRY, 2006, 71 (09): : 3630 - 3633
  • [26] 6-ENDO-TRIG RADICAL CYCLIZATIONS - SYNTHETIC APPROACHES TO THE A-B-RING OF (+/-)-FORSKOLIN
    ANIES, C
    BILLOT, L
    LALLEMAND, JY
    PANCRAZI, A
    [J]. TETRAHEDRON LETTERS, 1995, 36 (40) : 7247 - 7250
  • [27] REACTION OF ALPHA-DIKETONES WITH 2-AMINO ALCOHOLS - INTRAMOLECULAR COMPETITIVE 6-EXO-TRIG VS 5-ENDO-TRIG PROCESSES - A SYSTEMATIC AND KINETIC-STUDY
    ALCAIDE, B
    PLUMET, J
    RODRIGUEZCAMPOS, IM
    GARCIABLANCO, S
    MARTINEZCARRERA, S
    [J]. JOURNAL OF ORGANIC CHEMISTRY, 1992, 57 (08): : 2446 - 2454
  • [28] Effect of temperature on 5-endo- and 4-exo-trig radical cyclizations of N-vinylic α-halo amides
    Ishibashi, H
    Higuchi, M
    Ohba, M
    Ikeda, M
    [J]. TETRAHEDRON LETTERS, 1998, 39 (1-2) : 75 - 78
  • [29] RADICAL CYCLIZATION STRATEGIES TO BRIDGED SYSTEMS - REGIOSELECTIVE CONSTRUCTION OF CHIRAL BICYCLO [2.2.2] AND [3.2.1] OCTANES VIA 6-EXO TRIG AND 5-EXO TRIG RADICAL CYCLIZATION REACTIONS
    SRIKRISHNA, A
    HEMAMALINI, P
    [J]. TETRAHEDRON, 1992, 48 (42) : 9337 - 9354
  • [30] Synthesis of bis(enolnonaflates) and their 4-exo-trig-cyclizations by intramolecular Heck reactions
    Bräse, S
    [J]. SYNLETT, 1999, (10) : 1654 - 1656