Intramolecular Diels−Alder and Tandem Intramolecular Diels−Alder/1,3-Dipolar Cycloaddition Reactions of 1,3,4-Oxadiazoles
作者:Gordon D. Wilkie、Gregory I. Elliott、Brian S. J. Blagg、Scott E. Wolkenberg、Danielle R. Soenen、Michael M. Miller、Scott Pollack、Dale L. Boger
DOI:10.1021/ja027533n
日期:2002.9.1
The scope of intramolecular Diels-Alder and a novel tandem Diels-Alder/1,3-dipolar cycloaddition cascade of 1,3,4-oxadiazoles is disclosed. In the cases examined, the tandem cycloadditions construct three new rings with formation of four new C-C bonds and set all six stereocenters about a central six-membered ring in a single step including three contiguous and four total quaternary centers without
公开了分子内 Diels-Alder 和 1,3,4-恶二唑的新型串联 Diels-Alder/1,3-偶极环加成级联的范围。在所研究的案例中,串联环加成构建了三个新环,形成了四个新的 CC 键,并在一个步骤中将所有六个立体中心设置在一个中央六元环上,包括三个连续的和四个总的四元中心,没有第二个非对映体的痕迹.