메뉴 건너뛰기




Volumn 45, Issue 20, 2004, Pages 3895-3898

Novel intramolecular cyclization of 2-(buta-1,3-dienyl)-3-methylpyrazines and 3-(buta-1,3-dienyl)-4-methyl-1,2,5-oxadiazoles into 5H-cycloheptapyrazines and 4H-cyclohepta-1,2,5-oxadiazoles

Author keywords

1,2,5 Oxadiazole; 4H Cyclohepta 1,2,5 oxadiazole; 5H Cycloheptapyrazine; Intramolecular cyclization; Pyrazine

Indexed keywords

LITHIUM; OXADIAZOLE DERIVATIVE; PYRAZINE DERIVATIVE;

EID: 1942536093     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tetlet.2004.03.123     Document Type: Article
Times cited : (6)

References (18)
  • 1
    • 1942440616 scopus 로고    scopus 로고
    • note
    • 1,2 However, a product derived from substitution of a hydrogen on a heteroaromatic ring with a butyl group was little observed for the case presented here.
  • 7
    • 1942536764 scopus 로고    scopus 로고
    • note
    • Ratios of 1,2-adduct versus 1,4-adduct were as follows: 52:48 for 3c, and 71:29 for 3d.
  • 8
    • 1942504991 scopus 로고    scopus 로고
    • note
    • 5.
  • 9
    • 1942440613 scopus 로고    scopus 로고
    • note
    • 2O: C, 76.16; H, 6.39; N, 11.10. Found: C, 76.31; H, 6.37; N, 11.05.
  • 10
    • 1942440612 scopus 로고    scopus 로고
    • note
    • 2-AcOEt to give 7a in 90% yield.
  • 11
    • 1942536769 scopus 로고    scopus 로고
    • note
    • 2O: C, 76.16; H, 6.39; N, 11.10. Found: C, 76.23; H, 6.42, N; 11.12.
  • 12
    • 1942472748 scopus 로고    scopus 로고
    • note
    • 14.
  • 16
    • 1942504988 scopus 로고    scopus 로고
    • An addition of butyllithium to a solution of anion ( 14 ) in THF gave little products.
  • 17
    • 1942504982 scopus 로고    scopus 로고
    • note
    • 18.
  • 18
    • 1942536767 scopus 로고
    • Additions to and Substitutions at C-C π-Bonds
    • Trost B.M., Fleming I. Pergamon, Oxford.
    • Semmelhack M.F. Additions to and Substitutions at C-C π-Bonds. Trost B.M., Fleming I. Comprehensive Organic Synthesis. 1995;Pergamon, Oxford. p 6, p 187.
    • (1995) Comprehensive Organic Synthesis , pp. 6
    • Semmelhack, M.F.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.