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Volumn 12, Issue 8, 2010, Pages 1732-1735

Expeditious synthesis of benzopyrans via lewis acid-catalyzed C-H functionalization: Remarkable enhancement of reactivity by an ortho substituent

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EID: 77951158758     PISSN: 15237060     EISSN: 15237052     Source Type: Journal    
DOI: 10.1021/ol100316k     Document Type: Article
Times cited : (121)

References (44)
  • 1
    • 77951170182 scopus 로고    scopus 로고
    • For recent reviews on C-H activation, see
    • For recent reviews on C-H activation, see
  • 7
    • 77951172069 scopus 로고    scopus 로고
    • For selected recent references, see
    • For selected recent references, see
  • 16
    • 77951200254 scopus 로고    scopus 로고
    • These types of reactions have been classified under the term tert -amino effect. For reviews, see
    • These types of reactions have been classified under the term tert -amino effect. For reviews, see
  • 35
    • 77951183168 scopus 로고    scopus 로고
    • Seidel reported a similar redox process promoted by TfOH
    • Seidel reported a similar redox process promoted by TfOH
  • 39
    • 77951153433 scopus 로고
    • Eliel, E. D.; Wilen, S. H., Eds.; Wiley-Interscience: Markham, ON,; Chapter 14
    • Stereochemistry of Organic Compounds; Eliel, E. D.; Wilen, S. H., Eds.; Wiley-Interscience: Markham, ON, 1994; Chapter 14, p 1455.
    • (1994) Stereochemistry of Organic Compounds , pp. 1455
  • 40
    • 77951167345 scopus 로고    scopus 로고
    • The reactivity improvement of 11 was also ascribed to the "buttressing effect" between the methyl group and the benzylidene moiety, which forced the benzylidene moiety to be positioned close to the benzyloxy group.
    • The reactivity improvement of 11 was also ascribed to the "buttressing effect" between the methyl group and the benzylidene moiety, which forced the benzylidene moiety to be positioned close to the benzyloxy group.
  • 41
    • 77951163942 scopus 로고    scopus 로고
    • 4).
    • 4).
  • 42
    • 77951150784 scopus 로고    scopus 로고
    • The order of reactivity of these substrates was in good agreement with that of flipping energy in cyclohexane, namely, " A value". See
    • The order of reactivity of these substrates was in good agreement with that of flipping energy in cyclohexane, namely, " A value". See
  • 44
    • 77951186064 scopus 로고    scopus 로고
    • 3). The relative stereochemistry of the major isomer was unambiguously established by single crystal X-ray analysis. CCDC-763440 contains the supplementary crystallographic data of 22α. This data can be obtained free of charge from The Cambridge Crystallographic Data Centre via.
    • 3). The relative stereochemistry of the major isomer was unambiguously established by single crystal X-ray analysis. CCDC-763440 contains the supplementary crystallographic data of 22α. This data can be obtained free of charge from The Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/data-request.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.