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Volumn 71, Issue 13, 2006, Pages 4742-4747

The effect of solvent on the structure of the transition state for the SN2 reaction between cyanide ion and ethyl chloride in DMSO and THF probed with six different kinetic isotope effects

Author keywords

[No Author keywords available]

Indexed keywords

CHLORINE COMPOUNDS; COMPOSITION; IONS; ISOTOPES; REACTION KINETICS; SOLVENTS;

EID: 33745476854     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo052375e     Document Type: Article
Times cited : (27)

References (33)
  • 3
    • 33745433136 scopus 로고    scopus 로고
    • University of Colorado. Boulder, CO, 80309-0215
    • Private communication, V. Bierbaum, University of Colorado. Boulder, CO, 80309-0215.
    • Bierbaum, V.1
  • 6
    • 33745478991 scopus 로고    scopus 로고
    • note
    • Attempts to study the reaction in cyclohexane, hexane, and benzene failed because the reaction was too slow to measure even at the highest possible tetrabutylammonium cyanide concentrations (the fastest rate) in these solvents.
  • 7
    • 33745438562 scopus 로고    scopus 로고
    • note
    • A conductivity study in our laboratories shows significant levels of cyanide ion pairs in both DMSO and THF. This suggests the reacting cyanide ion is the same in both solvents.
  • 13
    • 33745470136 scopus 로고
    • Isotopes in Organic Chemistry, Vol. 7; Buncel, E., Lee, C. C., Eds.; Elsevier Science Publishers B.V: Amsterdam, The Netherlands, Chapter 5
    • Westaway, K. C. In Secondary and Solvent Isotope Effects; Isotopes in Organic Chemistry, Vol. 7; Buncel, E., Lee, C. C., Eds.; Elsevier Science Publishers B.V: Amsterdam, The Netherlands, 1987; Vol. 7, Chapter 5.
    • (1987) Secondary and Solvent Isotope Effects , vol.7
    • Westaway, K.C.1
  • 19
    • 33745459839 scopus 로고    scopus 로고
    • note
    • 20 respectively. The average of these values (5.3%) was used in calculating the change in the nucleophile carbon KIE with solvent.
  • 22
    • 25144525479 scopus 로고
    • Buncel, E., Saunders, W. H., Jr., Eds.; Elsevier: New York, Chapter 2
    • Paneth P. In Isotopes in Organic Chemistry; Buncel, E., Saunders, W. H., Jr., Eds.; Elsevier: New York, 1992; Vol. 8, Chapter 2.
    • (1992) Isotopes in Organic Chemistry , vol.8
    • Paneth, P.1
  • 23
    • 33745462212 scopus 로고    scopus 로고
    • note
    • α bond in the transition state would also lead to some shortening of the N≡C bond and a smaller, not the larger, KIE that is observed in THF. However, the change in the very small secondary nitrogen KIE of approximately 0.1% is very small and probably does not represent a significant change in the KIE and transition state structure at the nitrogen.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.