An easy lewis acid-mediated isomerization from (E)- to (Z)-Oxoindolin-3-ylidene ketones.
作者:Giuseppe Faita、Mariella Mella、PierPaolo Righetti、Gianfranco Tacconi
DOI:10.1016/s0040-4020(01)85706-9
日期:1994.1
(E)-2-Oxoindolin-3-ylidene ketones can be easily isomerized to their (Z)-isomers by AlCl3 at room temperature in CH2Cl2. The behaviour of the unsaturated dicarbonyl framework in the (Z)-configuration as a bidentate ligand can be the key-step of the isomerization. The limits of a reaction that allows to prepare several yet-unknown products is discussed.
在室温下,CH 2 Cl 2中的AlCl 3可以很容易地将(E)-2-氧代吲哚-3-亚基酮异构化为(Z)异构体。(Z)-构型中作为二齿配体的不饱和二羰基骨架的行为可能是异构化的关键步骤。讨论了可以制备几种尚不知道的产物的反应极限。