The title carbocation, generated from 1,1-ethylene-1,6-dihydroazulene and trityl tetrafluoroborate in deuterated acetonitrile at −20 °C, was characterized by means of low temperature NMR spectroscopy, and was found to undergo expansion of the cyclopropane ring at elevated temperature and to react with nucleophiles to give the addition products at the cyclopropane methylene carbon.
标题碳正离子由 1,
1-乙烯-1,6-二氢菘烯和四
氟硼酸三苯甲基酯在 -20 °C 的
氘化
乙腈中生成,通过低温 NMR 光谱表征,发现在升高温度并与亲核试剂反应以在
环丙烷亚甲基碳上产生加成产物。