Smiles Rearrangements in Ugi- and Passerini-Type Couplings: New Multicomponent Access to <i>O</i>- and <i>N</i>-Arylamides
作者:Laurent El Kaïm、Marie Gizolme、Laurence Grimaud、Julie Oble
DOI:10.1021/jo070202e
日期:2007.5.1
Smiles rearrangement in Ugi- and Passerini-type couplings with electron-deficient phenols allows very straightforward multicomponent formation of O-aryl- and N-arylamides. Best yields were observed with the highly activated o- and p-nitrophenols, salicylic derivatives giving adducts in lower yields. The scope of these new reactions is further increased by the successful couplings of heterocyclic phenols
Direct Access to Heterocyclic Scaffolds by New Multicomponent Ugi−Smiles Couplings
作者:Laurent El Kaim、Marie Gizolme、Laurence Grimaud、Julie Oble
DOI:10.1021/ol061605o
日期:2006.8.1
New heterocyclic scaffolds can be easily prepared by the coupling of heteroaromatic phenols (pyridines, pyrimidines) with carbonyl compounds, amines, and isocyanides. This transformation related to the Ugi reaction probably involves a Smilesrearrangement. The scope of this methodology is further extended by the successful use of heterocyclic thiols to form highly functionalized thioamides.
作者:Laurent El Kaïm、Laurence Grimaud、Srinivas Reddy Purumandla
DOI:10.1016/j.tetlet.2010.07.058
日期:2010.9
The four-component couplings of isocyanides with amines, aldehydes and phenols (Ugi–Smiles reactions) can be performed in water as the solvent instead of methanol or toluene.