Merrifield resin supported peroxomolybdenum(vi) compounds: recoverable heterogeneous catalysts for the efficient, selective and mild oxidation of organic sulfides with H2O2
作者:Jeena Jyoti Boruah、Siva Prasad Das、Seshadri Reddy Ankireddy、Sandhya Rani Gogoi、Nashreen S. Islam
DOI:10.1039/c3gc40304a
日期:——
amino acid functionalized Merrifield resin, which exhibit excellent activity, stability and selectivity for the oxidation of thioethers and dibenzothiophene (DBT) to the corresponding sulfoxides or sulfones by H2O2 at ambient temperature. The synthetic protocols are high-yielding, halogen-free, environmentallyclean and safe, and operationally simple. The catalysts, [MoO2(O2)(L)2]2−-MR [L = valine (MRVMo)
New polymer-immobilized peroxotungsten compound as an efficient catalyst for selective and mild oxidation of sulfides by hydrogen peroxide
作者:Siva Prasad Das、Jeena Jyoti Boruah、Niharika Sharma、Nashreen S. Islam
DOI:10.1016/j.molcata.2011.12.025
日期:2012.4
under mild conditions to afford the resulting products with impressive turn over frequency (TOF). The catalyst exhibit complete chemoselectivity toward sulfur group of substituted sulfides with other oxidation prone functional groups. Easy regeneration and reusability of the catalyst for at least up to seven catalytic cycles with consistent activity and selectivity is an important attribute of the catalyst
通过使H 2 WO 4反应,制备了一种新型的与聚合物结合的[W(O)2(O 2)(CN)2 ] –PAN [PAN =聚(丙烯腈)](PANW)类型的过氧钨酸盐(VI)催化剂。含30%H 2 O 2和大分子配体PAN,pH 5.0。通过元素分析,SEM,EDX,TGA和光谱研究(FTIR和13 C NMR)对化合物进行表征。在非均相催化剂PANW的存在下,使用H 2 O 2作为氧化剂,可以将各种硫化物和二苯并噻吩(DBT)干净地转化为相应的亚砜或砜。,通过反应条件的多种变化。反应在温和的条件下进行,以提供具有令人印象深刻的周转频率(TOF)的最终产物。该催化剂对具有其他易氧化官能团的取代硫化物的硫基表现出完全的化学选择性。催化剂的易于再生和可重复使用性至少达到七个催化循环,具有恒定的活性和选择性是催化剂的重要属性。
METHOD OF PRODUCING ORGANIC COMPOUND
申请人:FUJIFILM FINECHEMICALS CO., LTD.
公开号:US20180244604A1
公开(公告)日:2018-08-30
A method of producing an organic compound, which contains a step of performing a deodorization step using a flow reaction in a flow passage to remove, from a reaction liquid, a malodorous material generated or remaining in a reaction step,
wherein the organic compound is an industrially useful compound.
A straightforward, efficient, and selectiveoxidation of sulfide to sulfoxide with 30% H2O2 catalyzed by copper(II)–Schiff base complex is described. The reactions proceed under mild conditions in acetonitrile at room temperature to provide a variety of aryl and alkylsulfoxides in excellent yield.
描述了铜(II)-席夫碱络合物催化的30%H 2 O 2直接,高效且选择性地将硫化物氧化为亚砜的方法。反应在温和条件下于室温在乙腈中进行,以优异的收率提供各种芳基和烷基亚砜。
Phosphorescent material
申请人:——
公开号:US20030102800A1
公开(公告)日:2003-06-05
A phosphorescent light emitting material, the material is a complex compound comprises a beta-diketonate ligand, a sulfoxide ligand and a triple charge rare earth group metal ion, the phosphorescent light emitting material has a following structure:
1
wherein M is a triple charge rare earth group metal ion, R
2
is hydrogen, R
1
, R
3
,R
4
and R
5
are selected from the group consisting of C
1
to C
8
straight chain alkyl groups, C
1
to C
8
branch chain alkyl groups and C
6
to C
14
aryl groups.