Amberlyst®-15: a reusable heterogeneous catalyst for the dehydration of tertiary alcohols
作者:Luís M.T. Frija、Carlos A.M. Afonso
DOI:10.1016/j.tet.2012.06.083
日期:2012.9
under mild conditions in the presence of Amberlyst®-15 (dry) (solid-supported sulfonic acid) to give predominantly the most stable alkene in very good yield. The dehydration of tertiary alcohol functionality occurs without observation of rearrangement and polymerization products, and with outstanding substrate tolerance, which include the NHCBz, NHBoc, OSEM, OTBDMS, OBOM and ethylene ketal functional
叔醇温和条件下反应在大孔树脂的存在® -15(干)(固体负载的磺酸),得到主要为最稳定的烯烃中非常良好的产率。叔醇官能团的脱水没有观察到重排和聚合产物,并且具有出色的底物耐受性,其中包括NHCBz,NHBoc,OSEM,OTBDMS,OBOM和乙烯缩酮官能团。的Amberlyst ® -15(干燥)可以从反应介质中容易地回收和再利用于五个周期,保持催化效率。另外,脱水可以在连续操作下发生。