CNRS/Institut de Chimie des Substances Naturelles (ICSN), Centre de Recherche de Gif, Avenue de la Terrasse, 91198 Gif-sur-Yvette, France.
Angew Chem Int Ed Engl. 2012 Oct 15;51(42):10510-4. doi: 10.1002/anie.201205479. Epub 2012 Sep 20.
Hydrogen bonds can play a prominent role in organometallic catalysis, as shown for the title reaction, in which a counteranion directs the cyclization through the formation of hydrogen bonds that likely involve a proton of the π-allyl/palladium species itself. The reaction allows access to four out of the eight stereoisomers of 2,5-disubstitued 3-hydroxy-tetrahydrofurans and thus fragments of complex natural products.
氢键在有机金属催化中可以起到重要作用,如标题反应所示,其中抗衡阴离子通过形成氢键来定向环化,这可能涉及π-烯丙基/钯物种本身的质子。该反应可以得到 2,5-二取代 3-羟基四氢呋喃的八个立体异构体中的四个,因此是复杂天然产物的片段。