Copper-Catalyzed Extended Pummerer Reactions of Ketene Dithioacetal Monoxides with Alkynyl Sulfides and Ynamides with an Accompanying Oxygen Rearrangement
作者:Kei Murakami、Junichi Imoto、Hiroshi Matsubara、Suguru Yoshida、Hideki Yorimitsu、Koichiro Oshima
DOI:10.1002/chem.201204072
日期:2013.4.26
and ynamides provided a wide variety of γ,γ‐disulfanyl‐β,γ‐unsaturated carbonyl compounds with an accompanying oxygen rearrangement. The products can be easily converted into 1,4‐dicarbonyl compounds and substituted heteroaromatics. DFT calculations and mechanistic experiments revealed a new interesting stepwise addition/oxygen rearrangement mechanism.
描述了通过亚砜活化金属催化的扩展Pummerer反应的第一个例子。烯酮二硫缩醛一氧化碳与炔基硫醚和乙酰胺的铜催化反应提供了多种γ,γ-二硫烷基-β,γ-不饱和羰基化合物,并伴有氧重排。产物可以很容易地转化为1,4-二羰基化合物和取代的杂芳族化合物。DFT计算和机理实验揭示了一种新的有趣的逐步加成/氧重排机理。