Effects of. alpha. substitution on the carbonyl stretching frequencies of phenyl carboxylates

MI De Almeida, AT Do Amaral…

Index: Almeida, Maria Ines de; Amaral, Antonia T. do; Amaral, Luciano do Journal of Organic Chemistry, 1982 , vol. 47, # 8 p. 1567 - 1571

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Citation Number: 4

Abstract

The infrared carbonyl stretching frequencies for several esters of the general formula R1R2R3C-COOPh were determined in carbon tetrachloride. The u* and E, Taft parameters as well as the vcbn parameters for the same esters were determined. The carbonyl stretching frequencies are well correlated by a dual substituent parameter treatment: uC4= v0-+ p* u*+ 6E, or vc4= v0-+ p* u*+ Wcharton. In both cases the steric parameter is much ...