Directing Selectivity to Aldehydes, Alcohols, or Esters with Diphobane Ligands in Pd-Catalyzed Alkene Carbonylations
作者:Dillon W. P. Tay、James D. Nobbs、Srinivasulu Aitipamula、George J. P. Britovsek、Martin van Meurs
DOI:10.1021/acs.organomet.1c00228
日期:2021.6.28
trifluoromethylphenylene-bridged diphobane L1 with an electron-withdrawing substituent, lead to ester products via alkoxycarbonylation, whereas BCOPE gives predominantly alcohol products (n-nonanol and isomers) via reductive hydroformylation. The preference of BCOPE for reductive hydroformylation is also seen in the hydroformylation of 1-hexene in diglyme as the solvent, producing heptanol as the major product, whereas
Electrochemical reduction of CO2 in the presence of 1,3-butadiene using a hydrogen anode in a nonaqueous medium
作者:V. A. Grinberg、T. A. Koch、V. M. Mazin、E. I. Mysov、S. R. Sterlin
DOI:10.1007/bf02494552
日期:1999.2
The possibility of anodic generation of a solvated proton on a gas-diffusion electrode in an aproticmedium in the presence of carbon dioxide and 1,3-butadiene has been demonstrated. Formic acid was shown to be the only product of the reaction in the initially aproticmedium with the use of a hydrogen gas-diffusion anode. The influence of the counterion on the reactivity of the CO2.− radical anion
Rhodium-Catalyzed, Remote Terminal Hydroarylation of Activated Olefins through a Long-Range Deconjugative Isomerization
作者:Arun Jyoti Borah、Zhuangzhi Shi
DOI:10.1021/jacs.8b03560
日期:2018.5.16
The Rh-catalyzed, remote terminal hydroarylation of active olefins at the C7-position of indoles and the ortho-position of indolines and anilines with the appropriate choice of a N-P tBu2 directinggroupthrough long-range deconjugative isomerization has been reported. This transformation not only overcomes the conjugate rule of Michael acceptors but also controls the positional selectivity of indoles
The Rh-catalyzed, remote terminal hydroarylation of active olefins at the C7-position of indoles and the ortho-position of indolines and anilines with the appropriate choice of a NP tBu2 directing group through long-range deconjugative isomerization has been reported. 这种转变不仅克服了迈克尔受体的共轭规则,而且还控制了吲哚的位置选择性,代表了烯烃异构化和吲哚的 CH 烷基化的重大进步。
A general platinum-catalyzed alkoxycarbonylation of olefins
Hydroxy- and alkoxycarbonylation reactions constitute important industrial processes in homogeneous catalysis. Nowadays, palladium complexes constitute state-of-the-art catalysts for these transformations. Herein, we report the first efficient platinum-catalysed alkoxycarbonylations of olefins including sterically hindered and functionalized ones. This atom-efficient catalytic transformation provides
[EN] PROCESS FOR PREPARING MONO AND DICARBOXYLIC ACIDS<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ACIDES MONO ET DICARBOXYLIQUES
申请人:AGENCY SCIENCE TECH & RES
公开号:WO2017135898A1
公开(公告)日:2017-08-10
The present application relates to a process for preparing a dicarboxylic acid or dicarboxylic ester according to general formula (IV) R1OOC-(CH2)m-CH2CH2-(CH2)y-COOR4 (IV), comprising the steps of subjecting alkenoic acid or alkenoate of formula (II) R1OOC-(CH2)m-CH=CH-(CH2)x-H (II) to a metathesis reaction in the presence of a metathesis catalyst to form a longer-chain alkenoic acid or alkenoate of formula (III) R1OOC-(CH2)m-CH=CH-(CH2)y-H (III) where x