Catalytic Direct C2-Alkenylation of Oxazoles at Parts per Million Levels of Palladium/PhMezole-Phos Complex
作者:Wai Chung Fu、Yong Wu、Chau Ming So、Shun Man Wong、Aiwen Lei、Fuk Yee Kwong
DOI:10.1021/acs.orglett.6b02619
日期:2016.10.21
ligand candidate to facilitate this reaction. Significantly, the method is scalable and exhibits excellent substrate tolerance. Highly sterically hindered substrates and small vinyl tosylate can be coupled successfully. Moreover, our method enables a rapid diversification of oxazole-based C^N ligands which can be readily derived into new group 9 organometallic compounds.
据报道,使用钯基催化剂的百万分之几的烯基甲苯磺酸盐,恶唑的一般直接C 2-烯基化。从一系列筛选的配体中,PhMezole-Phos成为促进该反应的有希望的配体候选物。显着地,该方法是可扩展的并且展现出优异的基底耐受性。具有高空间位阻的底物和小的甲苯磺酸乙烯酯可以成功偶联。而且,我们的方法能够使基于恶唑的C ^ N配体快速多样化,这些配体很容易衍生为新的第9组有机金属化合物。