An efficient Pd-catalyzed oxidative coupling of aromatic primary amines and alkenes under molecular oxygen is disclosed. Under mild reaction conditions, it provides a rapid access to (Z)-enamine compounds with exceptional functional group tolerance and excellent regio- and stereoselectivity. This attractive route is of great significance due to its applicability to a wide range of aromatic primary
Palladium-Catalyzed <i>Z</i>-Selective Oxidative Amination of <i>ortho</i>-Substituted Primary Anilines with Olefins under an Open Air Atmosphere
作者:Yohei Mizuta、Kaoru Yasuda、Yasushi Obora
DOI:10.1021/jo4010734
日期:2013.6.21
The Pd-catalyzed oxidative amination of olefins with primary anilines has been achieved using molecular dioxygen as the sole oxidant. The use of ortho-substituted primary anilines such as ortho-toluidine was the key to the successful development of this reaction, providing the corresponding N-alkenyl substituted anilines in high yields with unusually high levels of Z-selectivity.
Palladium-Catalyzed Intermolecular Oxidative Coupling Reactions of (<i>Z</i>)-Enamines with Isocyanides through Selective β-C(sp<sup>2</sup>)-H and/or C=C Bond Cleavage
two efficient palladium‐catalyzed intermolecular oxidative couplingreactions of (Z)‐enamines with isocyanides via selective β‐C(sp2)‐H and/or C=C bond cleavage have been developed, leading to controllable chemodivergent and stereoselective construction of a wide range of (E)‐β‐carbamoylenamine derivatives containing strong intramolecular hydrogen bonds. Furthermore, possible reaction pathways for these
Selenated NHC-Pd(II) Pincer Complex Catalyzed, Temperature-Dependent Selective Hydroamination and Oxidative Amination of Olefins: Formation of Enamine Esters and β-Amino Esters under Solvent-Free and Aerobic Conditions
作者:Charu Sharma、Sangeeta Kumari、Deepak Sharma、Avinash K. Srivastava、Raj K. Joshi
DOI:10.1021/acs.joc.3c01706
日期:2024.1.5
NHC-Pd(II) pincer catalyzed oxidative amination and hydroamination of olefins is developed under solvent-free aerobic conditions. Reaction offered a temperature-controlled synthesis of (Z)-enamine and β-amino esters to provide easy access and remarkable functional group tolerance for a variety of enamines. The developed approach renders an opportunity of scalability and flexibility, and besides this
NHC-Pd(II)钳催化烯烃氧化胺化和加氢胺化是在无溶剂有氧条件下开发的。 Reaction 提供了 ( Z )-烯胺和 β-氨基酯的温控合成,为各种烯胺提供了方便的获取和显着的官能团耐受性。所开发的方法提供了可扩展性和灵活性的机会,除此之外,产生的烯胺可以转化为许多含氮杂环,强调了其在合成和药物化学中的潜在用途。此外,这是首次报道苯胺与苯乙烯的偶联。