作者:Shujun Cai、Zheming Xiao、Yingbo Shi、Shuanhu Gao
DOI:10.1002/chem.201402993
日期:2014.7.7
(254 nm) smoothly yielded hexahydrofluorenones and related structures. This photo‐Nazarov reaction could also be applicable to the substrates carrying β‐alkyl groups on the enone, which gave corresponding polycyclic rings containing quaternary centers. These photo‐electrocyclized products may prove useful for synthesizing a variety of natural products and their derivatives. Further application of this
研究了芳基乙烯基酮的光-纳扎罗夫反应的反应条件和范围。与传统的酸催化方法相比,这种光解电环化反应在中性或碱性条件下进行。用紫外线(254 nm)照射带有各种芳族环,酸敏感基团,环己烯基,环庚烯基和不饱和吡喃的底物,可以平稳地产生六氢芴酮及其相关结构。这种光-纳扎罗夫反应也可能适用于在烯酮上带有β-烷基的底物,该底物产生了相应的含有季中心的多环。这些光电循环产物可能被证明可用于合成多种天然产物及其衍生物。