We discovered an efficient protocol for the conversion of tertiary and secondary benzylic alcohols into the corresponding alkanes in good to quantitative yields by employing tin(IV) ion-exchanged montmorillonite (Sn-Mont) as a solid acid catalyst and Et3SiH as the hydride source. The reaction is likely to proceed via the S_N1-type reaction mechanism, that is, the formation of carbenium ions, followed by the addition of a hydride from the silane. The work-up of the reaction only requires simple filtration of the solid acid without any neutralization of the acid catalyst.

中文翻译：

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固体酸锡（IV）离子交换蒙脱土催化的三乙基硅烷将叔和仲苄醇脱氧成烷烃

我们发现了一种有效的方案，可将锡（IV）离子交换的蒙脱石（Sn-Mont）作为固体酸催化剂，并将Et3SiH作为氢化物源，从而将叔和仲苄醇以良好的定量产率转化为相应的烷烃。该反应可能是经由S进行_Ñ 1型反应机制，即，碳正离子的形成，随后加入来自硅烷氢化物。反应的后处理仅需要简单地过滤固体酸而不中和酸催化剂。