CF3-benzyl alcohols (and their heterocyclic analogues) undergo elimination of TMSOH molecule with the formation of α-(trifluoromethyl)styrenes in yields of up to 90% under the action of strong Brønsted acids TfOH or H2SO4. Under the acidic conditions upon prolongation of the reaction, the α-(trifluoromethyl)styrenes are further dimerized into cis-/trans-1,3-di(trifluoromethyl)indanes in yields of up to
CF 3 -
苄醇(及其杂环类似物)的 TMS 醚在强布朗斯台德酸 TfOH 或 H 2 SO 4的作用下,会消除 TMSOH 分子并形成 α -(三
氟甲基)
苯乙烯,产率高达 90% 。在反应延长的酸性条件下,α-(三
氟甲基)
苯乙烯进一步二聚成顺式-/反式-1,3-二(三
氟甲基)
茚满,收率高达 100%。讨论了这些亲电转化的合理反应机制,包括 CF 3 -苄基碳阳离子的中间形成。