reactions between aryl benzyl sulfides and alkyllithiums were investigated. The resultant mono- and dilithiated intermediates were converted into the corresponding aldehydes and boronic, or carboxylic acids in good yields. It was found that diethyl ether stabilizes the ortho-lithiated compounds toward isomerisation to the benzylic derivatives. The process occurs easily in THF at low temperature and is
研究了芳基苄基
硫醚和烷基
锂之间的卤素-
锂交换和去质子反应。将得到的单和双
锂化的中间体以良好的产率转化为相应的醛和
硼或
羧酸。发现二
乙醚使邻位
锂化的化合物稳定化,使其异构化为苄基衍
生物。该过程很容易在低温下的THF中发生,并且是容易获得α,2-二
硫代
甲苯衍
生物的途径,该衍
生物在用CO 2处理后可以转化为二
羧酸。