Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, USA.
J Am Chem Soc. 2011 Apr 6;133(13):4702-5. doi: 10.1021/ja111060q. Epub 2011 Mar 14.
Rhodium carboxylate complexes (1 mol %) catalyze the migration of electron-withdrawing groups to selectively produce 3-substituted indoles from β-substituted styryl azides. The relative order of migratorial aptitude for this transformation is ester ≪ amide < H < sulfonyl < benzoyl ≪ nitro.
铑羧酸酯配合物(1 摩尔%)催化吸电子基团的迁移,从而选择性地从β取代的苯乙烯基叠氮化物生成 3 取代的吲哚。对于这种转化,迁移能力的相对顺序为酯<酰胺<氢<砜基<苯甲酰基<硝基。