Chemo- and regioselective reductive deoxygenation of 1-en-4-yn-ols into 1,4-enynes through FeF<sub>3</sub> and TfOH co-catalysis
作者:Zonglian Yang、Rapolu Kiran Kumar、Peiqiu Liao、Zhaohong Liu、Xingqi Li、Xihe Bi
DOI:10.1039/c5cc10518h
日期:——
We report chemo- and regioselective direct reductive deoxygenation of 1-en-4-yn-3-ols into 1,4-enynes through FeF3 and TfOH cooperative catalysis under NBSH-mediated conditions.
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
Highly Efficient Cascade Reaction for Selective Formation of Spirocyclobutenes from Dienallenes via Palladium-Catalyzed Oxidative Double Carbocyclization–Carbonylation–Alkynylation
作者:Youai Qiu、Bin Yang、Can Zhu、Jan-E. Bäckvall
DOI:10.1021/jacs.6b09240
日期:2016.10.26
A highlyselective cascade reaction that allows the direct transformation of dienallenes to spirocyclobutenes (spiro[3.4]octenes) as single diastereoisomers has been developed. The reaction involves formation of overall four C–C bonds and proceeds via a palladium-catalyzed oxidative transformation with insertion of olefin, olefin, and carbon monoxide. Under slightly different reaction conditions, an
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