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习题16 1,3,5-三硝基苯与丙酮在氢氧化钾的乙醇溶液存在下反应生成一种蓝紫色的Meisenheimer钾盐,见谱E-16。分析此谱并给出从谱所得最重要的论点以支持此盐的结构。取谱条件: 溶剂,(eD,),50(3,.7七重峰,Je-一20.5Hz) 浓度:饱和溶液温度:28℃测定频率:22.63 MHz 去偶.上.偶合谱(25000次),附有放大四倍的部分谱下:几H宽带去偶( 5000次)〔解答〕谱的归属
Problem 16 Reaction of 1,3,5-trinitrobenzene with acetone in the presence of potassium hydroxide in ethanol yields a blue-purple Meisenheimer potassium salt, see E-16. Analyze this spectrum and give the most important argument from the spectrum to support the structure of this salt. The chromatographic conditions were as follows: Solvent, (eD,), 50 (3, .7 Hept, Je-20.5Hz) Concentration: Saturated solution temperature: 28 ° C Measurement frequency: 22.63 MHz. Coupling spectrum , With four times the enlarged part of the spectrum under: a few H broadband to dual (5000) [answer] attribution of spectrum