1,1,2,2-Tetrahydroperoxy-1,2-Diphenylethane: An efficient and high oxygen content oxidant in various oxidative reactions
作者:Kaveh Khosravi、Shirin Naserifar
DOI:10.1016/j.tet.2018.09.041
日期:2018.11
Several oxidative approaches namely thiocyanation of aromatic compounds, epoxidation of alkenes, amidation of aromaticaldehydes, epoxidation of α, β-unsaturated ketones, oxidation of sulfides to sulfoxides and sulfones, bayer-villeger reaction, bromination and iodation of aniline and phenol derivatives oxidativeesterification, oxidation of pyridines and oxidation of secondary, allylic and benzyllic
A copper-catalyzedaerobicoxidative reaction between aromatics or heteroaromatics with KSCN is developed by using O2 as the oxidant. The combination of Cu(OTf)2, N,N,N′,N′-tetramethylethylenediamine (TMEDA) and BF3·Et2O provides an efficient catalytic system, affording substituted thiocyanation products and 2-aminobenzothiazoles in excellent yields. The reaction also possesses a good functional group
Citric acid as a trifunctional organocatalyst for thiocyanation of aromatic and heteroaromatic compounds in aqueous media
作者:Ardeshir Khazaei、Mohammad Ali Zolfigol、Mohmmad Mokhlesi、Mahtab Pirveysian
DOI:10.1139/v2012-013
日期:2012.5
A green and simple procedure for the thiocynation of aromatic and heteroaromatic rings in the presence of a cata- lytic amount of citric acid in water are described. The reactions proceed in high yields, with short reaction times and under mild conditions.
Heterogeneous and Catalytic Thiocyanation of Aromatic Compounds in Aqueous Media
作者:Mohammad Ali Zolfigol、Ardeshir Khazaei、Mohammad Mokhlesi、Hoshang Vahedi、Sami Sajadifar、Mahtab Pirveysian
DOI:10.1080/10426507.2011.610846
日期:2012.3.1
Abstract This article describes a highlyefficient heterogeneous catalyticthiocyanation of indoles, substituted anilines (electron rich and electron deficient) and N-substituted aromatic amines in water under mild and green conditions. The reaction of substrates with KSCN in the presence of silica sulfuric acid (SSA) and silica boron sulfonic acid (SBSA) as heterogeneous catalysts and H2O2 or UHP
Silica-bonded vanadic acid [SiO2–VO(OH)2] as a heterogeneous and recyclable catalyst for thiocyanation of organic compounds in aqueous media at room temperature
作者:Ardeshir Khazaei、Mohammad Ali Zolfigol、Maliheh Safaiee、Mohammad Mokhlesi、Elmira Donyadari、Morteza Shiri、Hendrik Gerhardus Kruger
DOI:10.1016/j.catcom.2012.04.015
日期:2012.9
Silica vanadic acid (in which vanadiumoxytrichloride has been supported on silica) is applied as an efficient, reusable and heterogeneous catalyst for the thiocyanation of heterocycles, substituted anilines (electron-rich and electron-deficient) and N-substituted aromatic amines using hydrogen peroxide in the water as a solvent at room temperature. The catalyst can be easily recovered and reused for