Acylation and Related Reactions under Microwaves. 4. Sulfonylation Reactions of Aromatics
作者:Julien Marquié,、André Laporterie、Jacques Dubac、Nicolas Roques、Jean-Roger Desmurs
DOI:10.1021/jo0010173
日期:2001.1.1
reactive and/or nonvolatile reagents (anisole, xylenes, mesitylene) expeditious conditions (short reaction time at constant MW power without control of the temperature) were used. With less reactive and/or low-boiling reagents (benzene, toluene, halobenzenes), the rise in temperature and the increase of reaction time were controlled either by sequential MW irradiation or by a temperature order. It was shown
苯及其活化或失活衍生物的无溶剂磺酰化反应是在微波(MW)辐射和催化量的氯化铁(III)的条件下进行的,在这些条件下,氯化铁(III)的活性高于其他金属盐。对于反应性和/或非挥发性试剂(苯甲醚,二甲苯,均三甲苯)使用较快的条件(在恒定MW功率下,反应时间短而不控制温度)。对于反应性较低和/或沸点较低的试剂(苯,甲苯,卤代苯),可通过顺序进行MW辐射或按温度顺序控制温度的升高和反应时间的增加。结果表明,MWs与反应中存在的极性物质(尤其是芳基砜及其FeCl3络合形式)发生优先相互作用。