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Communication | Regular issue | Vol 19, No. 10, 1982, pp.1849-1852
Published online, 1st January, 1970
DOI: 10.3987/R-1982-10-1849
Substitutent Effects on the Carbon-13 Chemical Shifts of Ylidic Carbons in Pyridinium Dicyanomethylides

Kiyoshi Matsumoto, Takane Uchida, and Chizuko Uno

*Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-Nihonmatsu-cho, Sakyo-ku, Kyoto 606-8501, Japan

Abstract

A correlation between the carbon-13 chemical shifts of carbanions in 4-substituted pyridinium dicyanomethylides has been described. At present, best correlation coefficient (0.969) was obtained using the Inamoto-Masuda methods, i.e. ι and μ parameters.