Journal of the Chemical Society. Perkin transactions II p. 641 - 646 (1984)
Update date:2022-08-04
Topics:
Konakahara, Takeo
Sato, Kenji
Takagi, Yukio
Kuwata, Kazuhiko
Twelve 2-alkoxypyrazines (R=iPr, sBu, 1,2-dimethylpropyl, 1,2,2-trimethylpropyl, t-butyl, t-pentyl, 1,1,2-trimethylpropyl, 1,1,2,2-tetramethylpropyl, octyl, neopentyl, +/--erythro- and +/--threo-2-deuterio-1,2-diphenylethyl) have been pyrolysed to elucidate the substituent effects on the rate and stereospecificity of the reaction.Activation parameters (log A and Ea) for the first eight compounds listed were determined.The reaction was accelerated by α-substitution; this was a combination of both polar and steric effects.The stereospecificity of the reaction was high.
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