作者:Makafui Gasonoo、Rajasekhar Reddy Naredla、Sten O. Nilsson Lill、Douglas A. Klumpp
DOI:10.1021/acs.joc.6b02220
日期:2016.12.2
A tetracationic electrophile has been generated in superacid and shown to undergo an arylation reaction with benzene. A cyclization product is also obtained in the absence of benzene, presumably from a tricationic intermediate. Using low-temperature NMR, the tetracationic species is directly observed from a FSO3H-SbF5-SO2ClF solution. Similar chemistry is described with a system involving penta- and
四阳离子亲电子试剂已在超酸中生成,并显示与苯发生芳基化反应。在不存在苯的情况下也可以从三阳离子中间体获得环化产物。使用低温NMR,直接从FSO 3 H-SbF 5 -SO 2 ClF溶液中观察到四阳离子物种。用涉及五阳离子和四阳离子中间体的系统描述了相似的化学反应。还通过DFT计算检查了这些高度电离的结构及其化学性质。