Intramolecular Diels–Alder chemistry of 4-vinylimidazoles
作者:Yong He、Pasupathy Krishnamoorthy、Heather M. Lima、Yingzhong Chen、Haiyan Wu、Rasapalli Sivappa、H. V. Rasika Dias、Carl J. Lovely
DOI:10.1039/c0ob00657b
日期:——
An investigation of 4-vinylimidazoles as diene components in the intramolecularDiels–Alder reaction is described. In the course of these studies several parameters affecting the cycloaddition were evaluated including the nature of the imidazole protecting group, the type of dienophile and the linking group. These investigations established that amino linkers were generally more effective than either
Room Temperature Diels–Alder Reactions of 4-Vinylimidazoles
作者:Brandon B. Fulton、Alexia J. Hartzell、H. V. Rasika Dias、Carl J. Lovely
DOI:10.3390/molecules29081902
日期:——
In the course of studying Diels–Alder reactions of 4-vinylimidazoles with N-phenylmaleimide, it was discovered that they engage in cycloaddition at room temperature to give high yields of the initial cycloadduct as a single stereoisomer. In certain cases, the product precipitated out of the reaction mixture and could be isolated by simple filtration, thereby avoiding issues with aromatization observed