functionalization of arenes that is complementary to classical aromatic substitution reactions remains a long‐standing quest in organic synthesis. Exploiting the generation of halenium ion through oxidative process and the protonation of the nitrogen containing function in HF/SbF5, the chlorination and iodination of classically inert Csp2−H bonds of aromatic amines occurs. Furthermore, the superacid‐promoted (poly)protonation
Yakobson,G.G. et al., Journal of general chemistry of the USSR, 1962, vol. 32, p. 3078 - 3081
作者:Yakobson,G.G. et al.
DOI:——
日期:——
A SIMPLE AND EFFICIENT PROCEDURE FOR THE BECKMANN REARRANGEMENT OF OXIME USING<i>bis</i>-(TRICHLOROMETHYL) CARBONATE/DMF
作者:W. K. Su、Y. Zhang、J. J. Li、P. Li
DOI:10.1080/00304940809458118
日期:2008.12
also be used for the Beckmannrearrangement with satisfactory results under mild conditions (Scheme 1). Jochims et al." have reported that oximes react with oxalyl chloride in the presence of Lewis acid to give nitrilium salts which then rearrange. Compared with this method, our procedure is much easier to control and more environmentally friendly. Acetophenone oxime (mixture of E/Z isomers) was used