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doi:10.1016/S0040-4039(00)83992-1    
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Copyright © 1986 Published by Elsevier Science Ltd. All rights reserved.

A simple method of obtaining σ values of alkyl substituents

Bo-Long Poh

School of Chemical Sciences, Universiti Sains Malaysia, Penang, Malaysia


Received 6 November 1985. 
Available online 8 March 2001.

Abstract

The Taft's σ value of any given alkyl substituent can be calculated from the equation σ = −0.255 σb + 0.461 since the value of σb, an alkyl substituent constant, of any alkyl group can be obtained from the C---C and C---H bond refractions.

References

R.W. Taft In: M.S. Newman, Editor, Steric Effects in Organic Chemistry, Wiley, New York (1956).

J. Shorter Correlation Analysis of Organic Chemistry, Research Studies Press, England (1982) Ch. 4 .

L.S. Levitt and H.F. Widing Progr. Phys. Org. Chem. 12 (1976), p. 119. Full Text via CrossRef

T.L. Brown J. Am. Chem. Soc. 81 (1959), p. 3229. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (3)

B.L. Poh Aust. J. Chem. 32 (1979), p. 427.

A.I. Vogel, W.T. Creswell, G.H. Jeffery and J. Leicester J. Chem. Soc. (1952), p. 514. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (5)

A.B. Haeflemeyer and C.K. Hancock J. Am. Chem. Soc. 77 (1955), p. 4746.

R.W. Taft, Jr. J. Am. Chem. Soc. 75 (1953), p. 4231. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (63)


Tetrahedron Letters
Volume 27, Issue 2, 1986, Pages 263-264
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