The author of 《The electrostatic influence of substituents on reaction rates. II》 were Westheimer, F. H.. And the article was published in Journal of the American Chemical Society in 1940. HPLC of Formula: 7116-36-1 The author mentioned the following in the article:
cf. C. A. 34, 2236.6. The electrostatic equations derived by Kirkwood and Westheimer (C. A. 32, 8244.8) were applied successfully to calculation of the effect of para substituents on the rate of saponification of Et phenylacetate (I), hydrocinnamate (II), benzoate (III) and cinnamate (IV), to the rate of alk. hydrolysis of benzamides (V) and the rate of reaction of benzyl chlorides (VI) with NaI. Data are given for values of the sp. rate constants, k, for the saponification of p-nitro-I, p-chloro-I, p-methyl-I, p-methoxy-I, p-amino-I, p-chloro-II, p-methoxy-II, p-nitro-VI, p-fluoro-VI, p-chloro-VI, p-bromo-VI, p-iodo-VI, p-nitro-III, p-fluoro-III, p-chloro-III, p-bromo-III, p-iodo-III, p-methyl-III, p-methoxy-III, p-amino-III, p-nitro-IV, p-fluoro-IV, p-chloro-IV, p-bromo-IV, p-iodo-IV, p-methyl-IV; for the alk. hydrolysis of p-nitro-V, p-chloro-V, p-bromo-V, p-iodo-V, p-methyl-V, p-methoxy-V, p-amino-V, and for the reaction between NMe3 and Me p-methylbenzoate and Me p-nitrobenzoate, resp. These are compared with calculated values of k. An approx. equation is derived which applies to dipole-dipole interaction and is shown satisfactorily to account for the effect of substituents on the rate of alkylation of NMe3 by substituted Me benzoates. After reading the article, we found that the author used Ethyl 3-(4-chlorophenyl)propanoate(cas: 7116-36-1HPLC of Formula: 7116-36-1)
Ethyl 3-(4-chlorophenyl)propanoate(cas: 7116-36-1) belongs to organochlorine compounds. Many organochlorine compounds have been isolated from natural sources ranging from bacteria to humans. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. HPLC of Formula: 7116-36-1
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics