with excess lithium (or potassium) metal under ultrasonic irradiation in the presence of catalytic amounts of the electron-transfer agent 4,4′-di-t-butylbiphenyl (DBB) caused conversions to aromatic hydrocarbons in good yields. Addition of 1 or 2 equiv of alkyl halides prior to aq ammonium chloride treatment during workup provided mono- or di-alkylated products.
四氢呋喃(THF)的超声波照射下在催化量的电子转移剂4,4'-二-的存在下与过量的
锂(或
钾)
金属的标题化合物的溶液的处理吨引起-butylbiphenyl(
DBB)转换到
芳烃,收率高。在后处理期间在
氯化铵水溶液处理之前添加1或2当量的烷基卤化物提供了单烷基化或二烷基化的产物。