Studies on pyrrolidinones. Synthesis of 4,5-fused-3-hydroxypyridinyl-2-propionic acid derivatives
作者:Rufine Akué-Gédu、Daniel Couturier、Jean-Pierre Hénichart、Benoit Rigo、Gérard Sanz、Luc Van Hijfte、Anne Bourry
DOI:10.1016/j.tet.2011.11.071
日期:2012.1
The synthesis of some condensed indolizinediones derived from pyroglutamic acid is described. Treatment of these ketones in HCl, HBr or MeONa/MeOH furnished aryl propionic acid derivatives. During the ketone transformations, two sequential processes could take place in competitive manner to provide heterocyclic systems bearing carboxylic acid or hydroxycarboxylic acid function. Easy synthesis of amides