Highly Selective Olefin-Assisted Pd<sup>II</sup>
-Catalyzed Oxidative Alkynylation of Enallenes
作者:Jeffrey L. Henry、Daniels Posevins、Bin Yang、Youai Qiu、Jan-E. Bäckvall
DOI:10.1002/chem.201701654
日期:2017.6.12
An olefin‐assisted, palladium‐catalyzedoxidative alkynylation of enallenes for regio‐ and stereoselective synthesis of substituted trienynes has been developed. The reaction shows a broad substrate scope and good tolerance for various functional groups on the allene moiety, including carboxylic acid esters, free hydroxyls, imides, and alkyl groups. Also, a wide range of terminal alkynes with electron‐donating
A Novel Three-Component Reaction of Allenoates, Isocyanides, and Carboxylic Acids: Facile Synthesis of Highly Substituted Acryl Imide Derivatives
作者:Xian Huang、Feng Sha
DOI:10.1021/jo702382h
日期:2008.2.1
A novel synthesis of highly substituted acryl imide derivatives by the three-component reaction of allenoates, isocyanides, and carboxylicacids was reported, and the intramolecular cyclization reaction of allenoic acids with isocyanides was also described.
Synthesis of Cross-Conjugated Polyenes via Palladium-Catalyzed Oxidative C–C Bond Forming Cascade Reactions of Allenes
作者:Veluru Ramesh Naidu、Jan-E. Bäckvall
DOI:10.1021/acs.joc.0c00186
日期:2020.4.17
allenyne followed by a carbocyclization of the generated Pd-intermediate was developed. This cascade reaction afforded functionalized cross-conjugatedpolyenes. The enallene is initially activated by palladium and reacts with the allenyne to give the cross-conjugatedpolyenes.
Highly Selective Cascade C–C Bond Formation via Palladium- Catalyzed Oxidative Carbonylation–Carbocyclization–Carbonylation–Alkynylation of Enallenes
作者:Can Zhu、Bin Yang、Jan-E. Bäckvall
DOI:10.1021/jacs.5b06828
日期:2015.9.23
highly efficient palladium-catalyzedoxidative cascade reaction of enallenes undergoing overall four C-C bond formations has been developed. The insertion cascade proceeds via carbonylation-carbocyclization-carbonylation-alkynylation involving sequential insertion of carbon monoxide, olefin, and carbon monoxide. Furthermore, different types of terminal alkynes and functionalized enallenes have been investigated
已经开发出一种高效的钯催化氧化级联反应,进行整体四个 CC 键形成。插入级联通过涉及一氧化碳、烯烃和一氧化碳的顺序插入的羰基化-碳环化-羰基化-炔基化进行。此外,已经研究了不同类型的末端炔烃和官能化烯丙炔,发现它们在温和的反应条件下发生级联反应。
Olefin-Directed Palladium-Catalyzed Regio- and Stereoselective Oxidative Arylation of Allenes
作者:Can Zhu、Bin Yang、Tuo Jiang、Jan-E. Bäckvall
DOI:10.1002/anie.201502924
日期:2015.7.27
An olefin‐directed palladium‐catalyzedoxidative regio‐ and stereoselective arylation of allenes to afford 1,3,6‐trienes has been established. A number of functionalized allenes, including 2,3‐ and 3,4‐dienoates and 3,4‐dienol derivatives, have been investigated and found to undergo the olefin‐directed allene arylation. The olefin moiety has been proven to be a crucial element for the arylating transformation