4,5-Dimethyl-3-carbomethoxy-Δ2-pyrazoline and 3,5-dimethyl-3-carbomethoxy-Δ1-pyrazoline have been synthesized and pyrolized neat and in the vapor phase. The product analysis from these and a related dimethyl-3-carbomethoxypyrazoline indicate that substituent effects of methyls in the ring are cumulative.
4,5-二甲基-3-碳甲氧基-Δ2-
吡唑啉和3,5-二甲基-3-碳甲氧基-Δ1-
吡唑啉已经合成并在气相中热解。来自这些和相关二甲基-3-碳甲氧基
吡唑啉的产物分析表明环中甲基的取代作用是累积的。