Clay catalyzed rearrangement of substituted allyl phenyl ethers: Synthesis of ortho-allyl phenols, chromans and coumarans
作者:William G. Dauben、Jeffrey M. Cogen、Victor Behar
DOI:10.1016/s0040-4039(00)89033-4
日期:1990.1
Montmorillonite clays catalyze the rearrangement of substituted allyl phenyl ethers to provide ortho-allyl phenols, chromans and coumarans under mild conditions.
蒙脱土粘土在温和的条件下催化取代的烯丙基苯基醚的重排,以提供邻烯丙基苯酚,苯并二氢吡喃和香豆兰。
DAUBEN, WILLIAM G.;COGEN, JEFFREY M.;BEHAR, VICTOR, TETRAHEDRON LETT., 31,(1990) N3, C. 3241-3244
作者:DAUBEN, WILLIAM G.、COGEN, JEFFREY M.、BEHAR, VICTOR
DOI:——
日期:——
Use of Tunable Ligands Allows for Intermolecular Pd-Catalyzed C−O Bond Formation
作者:Andrei V. Vorogushin、Xiaohua Huang、Stephen L. Buchwald
DOI:10.1021/ja050471r
日期:2005.6.1
Pd-catalyzed C-O coupling reactions of aryl halides with primary and secondary alcohols by promoting reductive elimination at the expense of beta-hydride elimination. The key to their success is the ability to match the size of the ligand to that of the combination of substrates. The efficient coupling of a number of unactivated aryl chlorides and bromides with cyclic and acyclicsecondary alcohols was achieved
庞大的联芳基膦配体通过促进还原消除以消除 β-氢化物为代价,促进了 Pd 催化的芳基卤化物与伯醇和仲醇的 CO 偶联反应。它们成功的关键是能够将配体的大小与底物组合的大小相匹配。实现了许多未活化的芳基氯化物和溴化物与环状和非环状仲醇的有效偶联。这包括首次在 Pd 催化的偶联过程中偶联烯丙醇。