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
The three-component addition of isocyanides to phenol derivatives and aldehydes proceeds easily in methanol to form O-arylated compounds in a new Passerini-type reaction. The key step of the conversion lies in an irreversible Smilesrearrangement of intermediate phenoxyimidate adducts. It represents the first use of a Smilesrearrangement in a Passerini reaction. [reaction: see text]
Double Smiles rearrangement of Passerini adducts towards benzoxazinones
作者:E. Martinand-Lurin、A. Dos Santos、L. El Kaim、L. Grimaud、P. Retailleau
DOI:10.1039/c3cc49022j
日期:——
A new straightforward access to benzoxazinones based on a three-component coupling is presented here.
这里提供了一种基于三组分偶联的对苯并噁唑酮的新直接合成方法。
Optimized Conditions for Passerini-Smiles Reactions and Applications to Benzoxazinone Syntheses
作者:Elodie Martinand-Lurin、Aurélie Dos Santos、Emmanuelle Robineau、Pascal Retailleau、Philippe Dauban、Laurence Grimaud、Laurent El Kaïm
DOI:10.3390/molecules21091257
日期:——
new experimental conditions for this coupling between electron-poor phenols, isocyanides, and carbonyl derivatives. These new conditions have been applied to several synthetic strategies towards benzoxazinones.