作者:Thérèse Cuvigny、Julia Marc、Jullien Ludovic、Rolando Christian
DOI:10.1016/s0040-4039(00)96154-9
日期:1987.1
Under basic conditions 1-alkene-3-ols were converted into ketone homoenolates which led to β-alkylated ketones.
在碱性条件下,将1-烯烃-3-醇转化为酮均烯酸酯,从而生成β-烷基化的酮。
Direct Access to Isotopically Labeled Aliphatic Ketones Mediated by Nickel(I) Activation
作者:Aske S. Donslund、Simon S. Pedersen、Cecilie Gaardbo、Karoline T. Neumann、Lee Kingston、Charles S. Elmore、Troels Skrydstrup
DOI:10.1002/anie.201916391
日期:2020.5.18
An extensive range of functionalized aliphaticketones with good functional-group tolerance has been prepared by a NiI -promoted coupling of either primary or secondary alkyl iodides with NN2 pincer NiII -acyl complexes. The latter were easily accessed from the corresponding NiII -alkyl complexes with stoichiometric CO. This Ni-mediated carbonylative coupling is adaptable to late-stage carbon isotope
Rh‐Catalyzed Coupling of Aldehydes with Allylboronates Enables Facile Access to Ketones
作者:Kezhuo Zhang、Jiaxin Huang、Wanxiang Zhao
DOI:10.1002/chem.202103851
日期:2022.3.10
A novel strategy for the preparation of ketones from aldehydes and allylic boronic esters is presented. This reaction involves the allylation of aldehydes with allylic boronic esters and the Rh-catalyzed chain-walking of homoallylic alcohols. This approach features mild reaction conditions, broad substrate scope, and excellent functional groups. Mechanistic studies also supported that a tandem allylation
The present invention relates to a novel thermo-isomerization method for rapidly and simply producing macrocyclic ketones of the formula Ia or Ib.
1
The macrocyclic ketones are prepared in the gas phase at temperatures above 500° C. rapidly and in a simple manner from alcohols of the formula IIa and IIb directly with a high yield.
2
In the formulae Ia, Ib, IIa and IIb, R
1
-R
5,
and n have the meanings given in the description.
The present invention provides a process for the oxidation of straight-chain, branched-chain or cyclic alkanes of 1-20 carbon atoms and benzene derivatives represented by the following formulas (1) - (2). The alcohols and ketones obtained by the oxidation of the alkanes mentioned above and those by the oxidation of the benzene derivatives mentioned above represented by the following formulas (3) - (6) are important as basic starting materials in producing various chemical products including resins, such as nylon and polyester, pharmaceuticals, agricultural chemicals, perfumes, dyes, etc.