Palladium-Catalyzed Intermolecular Three-Component Coupling of Organic Halides with Alkynes and Alkenes: Efficient Synthesis of Oligoene Compounds
作者:Kana Shibata、Tetsuya Satoh、Masahiro Miura
DOI:10.1002/adsc.200700171
日期:2007.10.8
intermolecular three-componentcoupling of aryl or vinyl halides, diarylacetylenes, and monosubstituted alkenes effectively proceeds in the presence of palladium acetate, lithium chloride, and sodium bicarbonate as catalyst, promoter, and base, respectively, in aqueous DMF or DMSO to produce the corresponding 1,3-butadiene or 1,3,5-hexatriene derivatives. Use of dienyl bromides allows the coupling to afford
Pd(II)-Catalyzed Dehydrogenative Olefination of Vinylic C–H Bonds with Allylic Esters: General and Selective Access to Linear 1,3-Butadienes
作者:Yuexia Zhang、Zili Cui、Zejiang Li、Zhong-Quan Liu
DOI:10.1021/ol300442w
日期:2012.4.6
dienes by Pd(II)-catalyzed direct olefination of unactivated alkenes with allylicesters and acrylates via vinylic C–H activation. Various aryl and heteroaryl alkenes as well as aliphatic alkenes all give the desired linear 1,3-butadienes with retention of the traditionalleavinggroups such as OAc and other carboxylic acid estergroups.