目前桥头碳原子的苯并环状分子以往无法实现合成,有鉴于此,中国海洋大学徐涛等报道通过Ⅱ型[4+4]环加成反应,通过Rh催化苯并环丁烯酮(BCBs)的C1-C8活化,构建了完全由sp2型碳原子构建的anti-Bredt型双环[5.3.1]结构,并且考察了该分子与双烯酰胺的偶联反应情况。
参考文献
Jianyu Zhang, Xi Wang & Tao Xu, Regioselective activation of benzocyclobutenones and dienamides lead to anti-Bredt bridged-ring systems by a [4+4] cycloaddition, Nat Commun 12, 3022 (2021)
DOI: 10.1038/s41467-021-23344-0
https://www.nature.com/articles/s41467-021-23344-0