Stereospecific Cu(I)-Catalyzed C–O Cross-Coupling Synthesis of Acyclic 1,2-Di- and Trisubstituted Vinylic Ethers from Alcohols and Vinylic Halides
作者:San L. Pham、Taehee Kim、Frank E. McDonald
DOI:10.1021/acs.orglett.3c01849
日期:2023.7.21
and trisubstituted vinylic halides with functionalized alcohols, producing acyclic vinylic ethers. This stereospecific transformation selectively gives each of the (E)- and (Z)-vinylic ether products from the corresponding vinyl halide precursors. This method is compatible with carbohydrate-derived primary and secondary alcohols and several other functional groups. The conditions are mild enough to reliably
CuI 和反式- N , N'-二甲基环己基二胺催化 1,2-二取代和三取代乙烯基卤化物与官能化醇之间的一步 C-O 键交叉偶联,生成无环乙烯基醚。该立体有择转化从相应的卤乙烯前体选择性地产生( E )-和( Z ) -乙烯基醚产物中的每一种。该方法与碳水化合物衍生的伯醇和仲醇以及其他几个官能团兼容。条件足够温和,能够可靠地生成乙烯基烯丙醚,而不促进克莱森重排。