Decarboxylation of pyroglutamic acids with P2O5/CH3SO3H : A general synthesis of 5-aryl-2-pyrrolidinones
作者:B. Rigo、D. Fasseur、N. Cherepy、D. Couturier
DOI:10.1016/s0040-4039(01)93422-7
日期:——
RIGO, B.;FASSEUR, D.;CHEREPY, N.;COUTURIER, D., TETRAHEDRON LETT., 30,(1989) N0, C. 7057-7060
作者:RIGO, B.、FASSEUR, D.、CHEREPY, N.、COUTURIER, D.
DOI:——
日期:——
Studies on pyrrolidinones. Reaction of pyroglutamic acid and vinylogues with aromatics in Eaton’s reagent
作者:Alina Ghinet、Nathalie Van Hijfte、Philippe Gautret、Benoît Rigo、Hassan Oulyadi、Jolanta Rousseau
DOI:10.1016/j.tet.2011.11.080
日期:2012.1
decarbonylation of pyroglutamic acid in Eaton’s reagent, in presence of aromatic derivatives, is described. The utilization of these reaction conditions in the arylation of enaminoester vinylogues (17, 24) of pyroglutamic acid was also realized, confirming that these derivatives are subject to decarbonylationî in the same way as the parent acid. Depending on the nature of the aromatic derivative (15, 21, 28
pyrrolidone were investigated. The generalization of our preliminary findings on a copper(I)-catalyzed Csp2-N coupling process was first improved with a wide variety of aryl and heteroaryl halides and methyl pyroglutamate. The optimized protocol was further extended to pyrrolidin-2-ones substituted at the C5-position with an aryl group bearing an electron-donating or electron-withdrawing group as well as