Ruthenium(II)-bipyridine anchored montmorillonite-catalyzed oxidation of aromatic alkenes with tert-butyl hydroperoxide
作者:Takahiro Nishimura、Tomoaki Onoue、Kouichi Ohe、Jun-ichi Tateiwa、Sakae Uemura
DOI:10.1016/s0040-4039(98)00795-3
日期:1998.6
H-montmorillonite and 6-(ethoxydimethylsilyl)-2, 2′-bipyridine. Treatment of the bpy-mont with [RuCl2(CO)2]n affords a novel clay catalyst including Ru(II)-bpy. The oxidation of aromatic alkenes with tert-BuOOH in the presence of the catalyst and Et3N mainly produces vic-bis(tert-butyldioxy)alkanes. A similar oxidation of 2, 3-dimethyl-1, 3-butadiene affords 1, 4- and 1, 2-bis(tert-butyldioxy)alkenes
由H-蒙脱石和6-(乙氧基二甲基甲硅烷基)-2,2'-联吡啶制备联吡啶基甲硅烷基化蒙脱石(缩写为bpy-mont)。用[RuCl 2(CO)2 ] n处理bpy-mont,得到了一种新型的粘土催化剂,包括Ru(II)-bpy。在催化剂和Et 3 N的存在下,用叔丁醇氧化芳族烯烃主要产生vic-双(叔丁基二氧基)烷烃。类似地,将2,3-二甲基-1,3-丁二烯氧化可得到1,4-和1,2-双(叔丁基二氧基)烯烃。在没有Et 3 N的情况下,1,1-二苯基乙烯的氧化得到2-叔丁基二氧基-1-氢二氧基-1,1-二苯基乙烷作为主要产物。该催化剂在反应后易于分离,并可再用于氧化。