메뉴 건너뛰기




Volumn 8, Issue 12, 2006, Pages 2523-2526

A simple catalytic method for the regioselective halogenation of arenes

Author keywords

[No Author keywords available]

Indexed keywords

HALOGENATED HYDROCARBON; PALLADIUM; POLYCYCLIC AROMATIC HYDROCARBON;

EID: 33745577893     PISSN: 15237060     EISSN: None     Source Type: Journal    
DOI: 10.1021/ol060747f     Document Type: Article
Times cited : (336)

References (65)
  • 2
    • 0003529785 scopus 로고    scopus 로고
    • Silverman, G. S., Rakita, P. E., Eds.; Dekker: New York
    • Handbook of Grignard Reagents; Silverman, G. S., Rakita, P. E., Eds.; Dekker: New York, 1996.
    • (1996) Handbook of Grignard Reagents
  • 5
    • 0003397781 scopus 로고    scopus 로고
    • Dieterich, F., Stang, P. J., Eds.; Wiley-VCH: New York
    • (a) Metal Catalyzed Cross Coupling Reactions; Dieterich, F., Stang, P. J., Eds.; Wiley-VCH: New York, 1998.
    • (1998) Metal Catalyzed Cross Coupling Reactions
  • 17
  • 35
    • 1842640096 scopus 로고    scopus 로고
    • and references therein
    • -2 (for Ar-Cl). See: Roy, A. H.; Hartwig, J. F. Organometallics 2004, 23, 1533 and references therein.
    • (2004) Organometallics , vol.23 , pp. 1533
    • Roy, A.H.1    Hartwig, J.F.2
  • 53
    • 0030574604 scopus 로고    scopus 로고
    • and references therein
    • (e) Zhu, G.; Lu, X. J. Organomet. Chem. 1996, 508, 83 and references therein.
    • (1996) J. Organomet. Chem. , vol.508 , pp. 83
    • Zhu, G.1    Lu, X.2
  • 56
    • 33745556887 scopus 로고    scopus 로고
    • note
    • An initial screen of the reaction of 2-phenylpyridine with NCS in 11 different solvents revealed that the highest yields were obtained in MeCN and AcOH. As a result, further investigations focused on these two solvents.
  • 57
    • 33745580581 scopus 로고    scopus 로고
    • note
    • 2 in AcOH afforded traces (5% by GC) of a monochlorinated product.
  • 60
    • 33745523735 scopus 로고    scopus 로고
    • note
    • Notably, bromination of 1 with NBS (and bromination reactions in general) proceeded in lower yield than the analogous chlorinations or iodinations. The yield was independent of the source or quality (recrystallized versus nonrecrystallized) of the NBS. The predominant side products appeared to be traces of the corresponding dibrominated product along with mixtures of oxidatively coupled arylpyridines (dimers of 1, heterodimers of 1 with 1-Br, etc.). Interestingly, no acetoxylated side products were observed with NBS, even in AcOH.
  • 61
    • 33745524116 scopus 로고    scopus 로고
    • note
    • 2. See ref 15a.
  • 62
    • 33745551292 scopus 로고    scopus 로고
    • note
    • 2 in the reaction of 1 with NXS resulted in somewhat lower yields of 1-Cl, 1-Br, and 1-I (60%, 41%, and 77% GC yield, respectively).
  • 65
    • 33745549669 scopus 로고    scopus 로고
    • note
    • GC analysis of the isolated product showed ∼10% of a regioisomeric product both with and without Pd.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.