Nucleophilic Aromatic Substitution on Tricarbonyl(halogenoarene)chromium Complexes: A New Synthesis of<i>O</i>-Arylhydroxylamines
作者:Clara Baldoli、Paola Del Buttero、Emanuela Licandro、Stefano Maiorana
DOI:10.1055/s-1988-27569
日期:——
A series of O-arylhydroxylamines 4 have been synthesized under mild conditions and in good yields by the reaction of tricarbonyl(halogenoarene)chromium complexes 1 with N-(tert-butyloxycarbonyl)hydroxylamine (tert-butyl N-hydroxycarbamate), followed by decomplexation and acidic hydrolysis of the tert-butyl N-(aryloxy)carbamates 3.
The anion of t-butyl-N-hydroxycarbamate displaces halogens from (eta-6-haloarene) (eta-5-cyclopentadienyliron) salts. The resulting complexes are demetallated by photolysis in sunlight to generate t-butyl-N-(aryloxy)carbamates.