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Volumn 38, Issue 8, 1999, Pages 1128-1130

Alkyl migration aptitudes in the vinylidene-acetylene rearrangement and isotope effect in the vinylidene formation process from a deuterium-labeled cyclopropene

Author keywords

Cyclopropene; Isotope effects; Reaction mechanisms; Rearrangements; Vinylidene

Indexed keywords

ACETYLENE; CYCLOPROPANE DERIVATIVE; DEUTERIUM; VINYLIDENE CHLORIDE;

EID: 0033583454     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/(SICI)1521-3773(19990419)38:8<1128::AID-ANIE1128>3.0.CO;2-8     Document Type: Article
Times cited : (19)

References (24)
  • 12
    • 33745164845 scopus 로고    scopus 로고
    • note
    • 13C NMR spectroscopies. To avoid losses (by oligomerization) the compounds were stored at low temperatures (- 26°C) until shortly before pyrolysis studies.
  • 13
    • 33745152653 scopus 로고    scopus 로고
    • note
    • [4, 8]
  • 14
    • 33745148943 scopus 로고
    • Diploma thesis, Technische Universität Braunschweig
    • W. Graf von der Schulenburg, Diploma thesis, Technische Universität Braunschweig, 1995.
    • (1995)
    • Graf Von Der Schulenburg, W.1
  • 16
    • 33745161008 scopus 로고    scopus 로고
    • note
    • 13C signals were identified as follow: 2-pentyne (7): δ= 74.64 (C-2), 80.68 (C-3), in agreement with ref. [13]; 4-methyl-2-pentyne (10): δ = 74.53 (C-2), 85.03 (C-3), in agreement with refs. [5, 16]
  • 19
    • 33745160342 scopus 로고    scopus 로고
    • note
    • Data fitting was based on a comparison of the time evolution of all products with the predictions of kinetic model (using the Gear algorithm) for all steps in the mechanism. Rate constants were adjusted until a minimum deviation was obtained between the experimental curves and the model. The specific rate constants involving the vinylidenes were obtained by a stationary state analysis, which compared the best-fit rate constants for an individual reactant to product formation steps with predicted (analytical) expressions involving the partial rate factors for vinylidene for each pathway.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.