Selective Synthesis of cis-α,β-Unsaturated Sulfoxides and Sulfides by the Horner-Wittig Reaction with Bis(2,2,2-trifluoroethyl)phosphono Sulfoxides and Aromatic Aldehydes
The reaction of both isomers of methyl styryl sulfoxide (Ia) with the title chloride affords methyl phenacyl sulfide (IIa) and phenyl(α-methylthio)acetaldehyde (IIIa) besides β-chlorostyryl methyl sulfide (IVa). Phenyl styryl sulfoxide reacts similarly.
Cobalt modified N-doped carbon nanotubes for catalytic CC bond formation <i>via</i> dehydrogenative coupling of benzyl alcohols and DMSO
作者:Jinlei Li、Guoliang Liu、Lijun Shi、Qi Xing、Fuwei Li
DOI:10.1039/c7gc02335a
日期:——
The development of heterogeneous, cost-effective and environmentally benign catalysts to construct CC bonds is highly desirable.
开发多元化、具有成本效益且环境友好的催化剂来构建C-C键是非常可取的。
Photochemical incorporation of protic solvents by open chain olefins
作者:N. Miyamoto、H. Nozaki
DOI:10.1016/0040-4020(73)80201-7
日期:1973.1
Irradition of methyl styryl sulphoxide dissolved in MeOH, EtOH, or AcOH induces the photochemical polar addition of the solvents to afford the product, PhCH(OR)CH2SOMe, where R is Me, Et, or Ac. By-products are the corresponding sulphides, PhCH(OR)CH2SMe, and methyl styryl sulphide. Similar adducts of proticsolvents are produced upon irradiation of certain vinylic sulphides, methyl phenethynyl sulphide
The reactivity of 2-alkylidene-4-oxothiazolidine S-oxides under the Pummererreaction conditions, using Ac2O, TFAA, SOCl2 and SOBr2 as initiators, has been examined. Almost all reactions proceeded with absolute regioselectivity yielding α-substituted sulfides or vinyl-chloro derivatives. The mechanism for the formation of the latter products was postulated and proved experimentally.
A series of mandelicacid derivatives was oxidised by molecular oxygen using cobalt(II) chloride as the catalyst. Benzaldehyde and/or benzoic acid derivatives were obtained in high selectivities, depending on the aromatic ring substitution. Different oxidation mechanisms are operating, depending on the mandelicacid substitution.