One-Pot Three-Component Synthesis of Vicinal Diamines via In Situ Aminal Formation and Carboamination
作者:Ugo Orcel、Jerome Waser
DOI:10.1002/anie.201607318
日期:2016.10.4
A synthesis of vicinal diamines via in situ aminalformation and carboamination of allyl amines is reported. Employing highly electron‐poor trifluoromethyl aldimines in their stable hemiaminal form was key to enable both a fast and complete aminalformation as well as the palladium‐catalyzed carboamination step. The conditions developed allow the introduction of a wide variety of alkynyl, vinyl, aryl
Palladium-Catalyzed Carboamination of Allylic Alcohols Using a Trifluoroacetaldehyde-Derived Tether
作者:Bastian Muriel、Ugo Orcel、Jerome Waser
DOI:10.1021/acs.orglett.7b01524
日期:2017.7.7
selective palladium-catalyzed carboamination of allylic alcohols is reported on the basis of the use of an easily introduced trifluoroacetaldehyde-derived tether. Aminoalkynylation reactions were realized using alkynyl bromides and commercially available phosphine ligands. For aminoarylations, a new biaryl phosphine ligand, “Fu-XPhos”, was introduced to overcome a competitive Heckpathway. The carboamination
Novel compounds comprising a thiocarbonyl-sulfanyl group, which can be used for the radical synthesis of-alpha-perfluoroalkylamines
申请人:Zard Samir
公开号:US20060122404A1
公开(公告)日:2006-06-08
The invention relates to compounds having the general formula (I), the method of preparation thereof and the use thereof in organic radical synthesis. The invention also relates to compounds having the formula (II), the method of preparation thereof and a method for preparing compounds having the formula (VIII).
A Pd-catalyzed method based on the use of a molecular tether is described for olefin difunctionalization. Enabled by an easily introduced trifluoroacetaldehyde-derived tether, a simultaneous introduction of oxygen and nitrogen heteroatoms across unsaturated carbon–carbon bonds was achieved under oxidative conditions, most probably via high-valent Pd intermediates. Good yields and high diastereoselectivity