Rhodium(III)‐Catalyzed Oxidative Intramolecular 1,1‐Oxyamination of Alkenes with Protected Amino Acids to Produce Oxazoloisoindole‐2,5‐diones
作者:Hiroto Takahashi、Yuki Nagashima、Ken Tanaka
DOI:10.1002/ejoc.202100143
日期:2021.3.26
electron‐deficient bis(ethoxycarbonyl)‐substituted cyclopentadienyl (CpE) rhodium(III) complex catalyzes the oxidative intramolecular 1,1‐oxyamination of alkenes with N‐benzoyl amino acids to produce oxazoloisoindole‐2,5‐diones. Experimental and theoretical mechanistic studies revealed that this oxidative 1,1‐oxyamination proceeds via not the aza‐Wacker reaction but the formation of a rhoda(III)oxazolidine initiated
已经确定,缺电子的双(乙氧羰基)取代的环戊二烯基(Cp E)铑(III)配合物可催化烯烃与N-苯甲酰氨基酸的氧化性1,1-氧胺化反应,生成恶唑并异吲哚-2,5- diones。实验和理论机理研究表明,这种氧化的1,1–氧胺化反应不是通过aza-Wacker反应,而是通过羧酸定向的N-H键断裂引发的Rhoda(III)恶唑烷的形成而进行的。