[EN] ARYLMETHYLENE HETEROCYCLIC COMPOUNDS AS KV1.3 POTASSIUM SHAKER CHANNEL BLOCKERS [FR] COMPOSÉS HÉTÉROCYCLIQUES D'ARYLMÉTHYLÈNE UTILISÉS EN TANT QUE BLOQUEURS DES CANAUX POTASSIQUES KV1.3 DE TYPE SHAKER
Synthesis of α,β‐ and β‐Unsaturated Acids and Hydroxy Acids by Tandem Oxidation, Epoxidation, and Hydrolysis/Hydrogenation of Bioethanol Derivatives
作者:Daniel Santhanaraj、Maria P. Ruiz、Mallik R. Komarneni、Tu Pham、Gengnan Li、Daniel E. Resasco、Jimmy Faria
DOI:10.1002/anie.202002049
日期:2020.5.4
We report a reaction platform for the synthesis of three different high-value specialty chemical buildingblocks starting from bio-ethanol, which might have an important impact in the implementation of biorefineries. First, oxidative dehydrogenation of ethanol to acetaldehyde generates an aldehyde-containing stream active for the production of C4 aldehydes via base-catalyzed aldol-condensation. Then
Homogeneous aqueous oxidation of organic molecules by Oxone® and catalysis by a water-soluble manganese porphyrin complex
作者:Tu-Cai Zheng、David E. Richardson
DOI:10.1016/0040-4039(94)02420-g
日期:1995.2
Peroxymonosulfate (KHSO5) oxidizes a wide variety of water-soluble organic molecules in aqueous solutions, and the reactions are generally more rapid in phosphate buffer (pH 6–7) than in pure water. A water-solubleporphyrin complex, meso-tetrakis(4-N-methylpyridyl)porphyrinatomanganese(III) chloride, catalyzes epoxidation and hydroxylation under neutral pH conditions.
Determination and Evaluation of the Second-Order Rate Constants for the Oxidation of Maleic and Fumaric Acid Derivatives with Alkaline Potassium Permanganate
作者:S. Rahimah Abdul Halim、Gilly M. French、Alexandra J.N. Hughes、C.A. Olivia Prankerd Smith、D.E. Peter Hughes
DOI:10.3184/030823409x424867
日期:2009.3
The second-order rate constants for the oxidation of maleic (Z-butenedioc) and fumaric (E-butenedioc) acid derivatives by potassium permanganate at pH 13 were determined. These constants varied by a factor of 104. The results suggested that the rates of attack of the permanganate ion on the double bonds were largely governed by stericfactors with electrostatic and electronic effects playing only a