The intermolecular aromatic substitution of N,N-disubstituted anilines with diazo esters is achieved under mild conditions in the presence of a catalytic amount of copper(II) triflate (up to 89 % yield). The scope and limitations regarding substrates, diazo esters, and ligands in this reaction are described.
N,N-二取代苯胺与重氮酯的分子间芳香取代是在温和条件下在催化量的三氟甲磺酸铜 (II) 存在下实现的(产率高达 89%)。描述了该反应中有关底物、重氮酯和配体的范围和限制。
Bis(imino)pyridine iron complexes for catalytic carbene transfer reactions
作者:Ban Wang、Isaac G. Howard、Jackson W. Pope、Eric D. Conte、Yongming Deng
DOI:10.1039/c9sc02189b
日期:——
bis(imino)pyridine iron complex, for the first time, is developed as an effective metal carbene catalyst for carbene transfer reactions of donor-acceptor diazo compounds. Its broad catalytic capability is demonstrated by a range of metal carbene reactions, from cyclopropanation, cyclopropenation, epoxidation, and Doyle-Kirmse reaction to O-H insertion, N-H insertion, and C-H insertionreactions. The
The intermoleculararomaticsubstitution of N,N-dialkylanilines and alkoxybenzenes with diazoesters is shown to proceed in the presence of catalytic amounts of both copper(II) salt and acid (Lewis or Brønsted). This method is a mild and rare metal-free C–C bond formation reaction between aromatic (sp2) and aliphatic (sp3) carbons.
Well‐Defined, Versatile and Recyclable Half‐Sandwich Nickelacarborane Catalyst for Selective Carbene‐Transfer Reactions
作者:Linghua Wang、Saima Perveen、Yizhao Ouyang、Shuai Zhang、Jiao Jiao、Gang He、Yong Nie、Pengfei Li
DOI:10.1002/chem.202005014
日期:2021.3.26
accessible nickel(II)‐based complexes have been rarely used. Herein, an air‐stable nickel(II)‐carborane complex is reported as a well‐defined, versatile and recyclable catalyst for selective carbene transfer reactions with low catalyst loading undermildconditions. This catalyst is effective for several types of reactions including diastereoselective cyclopropanation, epoxidation, selective X−H insertions
This invention relates to compounds for the inhibition of histone deacetylase. More particularly, the invention provides for compounds of formula compounds of the Formula (I)
and N-oxides, hydrates, solvates, pharmaceutically acceptable salts, prodrugs and complexes thereof, and racemic and scalemic mixtures, diastereomers and enantiomers thereof, wherein groups L, M, X and Y are as defined herein.