Substituent effects on the chemical shifts of the conjugation sites in α-phenyl-N-arylnitrones (2) have been investigated. Resonance effects predominate at these positions. The electronic effects of the substituents should be treated separately between electron-donating groups and electron-withdrawing ones. A plausible mechanism for the transmission of the substituent effects in 2 has been proposed.
研究了取代基对 α-苯基-N-芳基硝基腈 (2) 共轭位点
化学位移的影响。共振效应在这些位置上占主导地位。取代基的电子效应应在供电子基团和吸电子基团之间分开处理。研究还提出了 2 中取代基效应传递的合理机制。