Counteranion-Directed Catalysis in the Tsuji-Trost Reaction: Stereocontrolled Access to 2,5-Disubstituted 3-Hydroxy-Tetrahydrofurans
作者:Martin Arthuis、Rodolphe Beaud、Vincent Gandon、Emmanuel Roulland
DOI:10.1002/anie.201205479
日期:2012.10.15
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
氢键可在有机金属催化中发挥重要作用,如标题反应所示,其中的抗衡阴离子通过形成氢键(可能涉及π-烯丙基/钯物种本身的质子)来引导环化反应。该反应允许进入2,5-二取代的3-羟基-四氢呋喃的八个立体异构体中的四个,从而得到复杂的天然产物的片段。