Synthesis of 1,4-Annulated Cyclooctatetraenophanes Based on a Novel Cubane Building Block Approach
作者:Robert M. Moriarty、Dražen Pavlović
DOI:10.1021/jo049643d
日期:2004.8.1
approach to strained 1,4-annulated cyclooctatetraene-based cyclophanes is described. A key feature in this approach is exploitation of the cubane core as a masked cyclooctatetraene synthon. Thus, 1,4-disubstituted cubanes 3 and 4 used as precursors to cyclooctatetraenophanes have been prepared in four steps from the readily available 1,4-cubanedicarboxaldehyde (5). The synthesis of 3 was effected by pa