Abstract
AbstractA new class of dirhodium(II) tetraamidinates derived from 2‐(sulfonylimino)pyrrolidines has been prepared through ligand substitution by using dirhodium(II) acetate, in which (3,1) geometric isomers are formed predominantly. Among these complexes, (3,1)‐Rh2(Msip)4, exhibits good catalytic performance in benzylic oxidation. In the presence of (3,1)‐Rh2(Msip)4 a variety of benzylic derivatives, including strongly electron‐deficient arylalkanes such as 1‐ethyl‐4‐nitrobenzene, are readily oxidized in water by the inexpensive oxidant T‐HYDRO® (70 wt.‐% aqueous tert‐butyl hydroperoxide).
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