Rhodium-Catalyzed Enantioselective Intermolecular Hydroalkoxylation of Allenes and Alkynes with Alcohols: Synthesis of Branched Allylic Ethers
作者:Zi Liu、Bernhard Breit
DOI:10.1002/anie.201603538
日期:2016.7.11
Regio‐ and enantioselective additions of alcohols to either terminal allenes or internal alkynes provides access to allylic ethers by using a RhI/diphenyl phosphate catalytic system. This method provides an atom‐economic way to obtain chiral aliphatic and aryl allylic ethers in moderate to good yield with good to excellent enantioselectivities.
通过末端Rh I /二苯基磷酸酯催化系统,将醇的区域和对映体选择性加成到末端异戊烯或内部炔烃中,即可获得烯丙基醚。该方法提供了一种原子经济的方法,可以以中等至良好的收率以及良好至优异的对映选择性获得手性脂肪族和芳基烯丙基醚。
Chemo-, Regio-, and Enantioselective Rhodium-Catalyzed Allylation of Triazoles with Internal Alkynes and Terminal Allenes
作者:Dino Berthold、Bernhard Breit
DOI:10.1021/acs.orglett.7b03708
日期:2018.2.2
triazole derivatives with internalalkynes and terminalallenes gives access to secondary and tertiary allylic triazoles in very good enantioselectivities. For this process, three new members of the JosPOphos ligand family have been prepared and employed in catalysis. The optimized reaction conditions enable the coupling of triazoles with internalalkynes as well as with allenes, displaying a high tolerance