GRUNVALD, V. R.;SHCHERBINA, V. E.;KASHINSKIJ, V. N.
摘要:
DOI:
作为试剂:
描述:
丙烯腈 、 1-丙基膦酸二乙酯 在
氮气 、 乙基正丙基硫醚 、 丙烷-1-硫醇 作用下,
以
丙烷-1-硫醇 为溶剂,
反应 5.0h,
以the crude product is obtained in a yield of 173 g with a 95.4% purity, which的产率得到3-(Ethoxy-proplyphosphinyl)propionitrile
参考文献:
名称:
Process for the preparation of phosphino compounds
Highly efficient oxidation of sulfides with hydrogen peroxide catalyzed by [SeO4{WO(O2)2}2]2−
作者:Keigo Kamata、Tomohisa Hirano、Noritaka Mizuno
DOI:10.1039/b907952a
日期:——
By using the selenium-containing dinuclear peroxotungstate at 0.005â0.1 mol%, various kinds of sulfides could be converted into the corresponding sulfoxides or sulfones in excellent yields with one or two equivalents of H2O2 with respect to the sulfide, respectively.
CMPs as Scaffolds for Constructing Porous Catalytic Frameworks: A Built-in Heterogeneous Catalyst with High Activity and Selectivity Based on Nanoporous Metalloporphyrin Polymers
作者:Long Chen、Yong Yang、Donglin Jiang
DOI:10.1021/ja1028556
日期:2010.7.7
sulfoxides, and is highly chemoselective for the oxidation of a sulfide group even in the coexistence of other oxidative functionalities. Owing to the covalent linkages between catalytic sites in the frameworks, FeP-CMP can be recycled with good retention of its porous structure and allows for large-scale transformation. These unique characteristics clearly originate from the covalentporous catalytic framework
The selenium-containing dinuclear peroxotungstate, [(n-C4H9)4N]2[SeO4WO(O2)2}2] (I), acts as a homogeneous catalyst for the selective oxidation of various kinds of cyclic mono- and disulfides with 30% aqueous H2O2. The cyclic disulfides were selectively oxidized to the corresponding monosulfoxides with one equivalent of H2O2 with respect to the sulfides. In the presence of two equivalents of H2O2, the oxidation of dibenzothiophene gave the corresponding sulfone in 98% yield under the mild conditions. The negative Hammett Ï value (â0.62) for the competitive oxidation of p-substituted thioanisoles and the low XSO (XSO = (nucleophilic oxidation)/(total oxidation)) value of 0.14 for the I-catalyzed oxidation of thianthrene 5-oxide (SSO) revealed that I is a strong electrophilic oxidant. The reactivities of the di- and tetranuclear peroxotungstates with XO4nâ ligands (X = Se(VI), As(V), P(V), S(VI), and Si(IV)) were strongly dependent on the kinds of hetero atoms. The reaction rates for the sulfoxidation decreased with an increase in the XSO values and a peroxotungstate with a stronger electrophilicity was more active for the sulfoxidation. The kinetic and mechanistic investigations showed that the electrophilic attack of the peroxo oxygen at the sulfur atom is a key step in the sulfoxidation. The computational investigation supported the high chemoselectivitiy for the sulfoxidation of diallyl sulfide.
Ruthenium-Catalyzed Asymmetric <i>N</i>-Acyl Nitrene Transfer Reaction: Imidation of Sulfide
作者:Masaki Yoshitake、Hiroki Hayashi、Tatsuya Uchida
DOI:10.1021/acs.orglett.0c01373
日期:2020.5.15
undesired nitrene dimerization or Curtius rearrangement. Herein, we achieved highly enantioselective imidation of sulfides via catalytic N-acyl nitrenetransfer with (OC)ruthenium-salen complex 2b as the catalyst and 3-substituted 1,4,2-dioxazol-5-ones 1 as the nitrene source. Complex 2b can decompose dioxazolones 1 to the desired N-acyl nitrene intermediates without any activation via heating or UV irradiation
efficient oxidation of organic sulfides to sulfoxides with iodobenzenediacetate [PhI(OAc)2] as a mild oxygen source in the presence of small amounts of water. Various substituted thioanisoles can be efficiently oxidized to sulfoxides with quantitative conversions (up to 2500 TONs) and excellent selectivies for sulfoxides. The catalyst effects, including the corrole ligands and oxidation states of