Peroxoniobium(<scp>v</scp>)-catalyzed selective oxidation of sulfides with hydrogen peroxide in water: a sustainable approach
作者:Sandhya Rani Gogoi、Jeena Jyoti Boruah、Gargi Sengupta、Gangutri Saikia、Kabirun Ahmed、Kusum K. Bania、Nashreen S. Islam
DOI:10.1039/c4cy00864b
日期:——
Facile and selective transformation of thioethers to the corresponding sulfoxides or sulfones with 30% H2O2 has been achieved in an aqueous medium by using peroxoniobium(v) complexes as reusable catalysts.
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)
A highly efficient reusable homogeneous copper catalyst for the selective aerobic oxygenation sulfides to sulfoxides
作者:Cheng Ren、Runxing Fang、Xiaochun Yu、Shun Wang
DOI:10.1016/j.tetlet.2018.01.066
日期:2018.3
catalysis of oxidation of sulfides to sulfoxides using molecular oxygen as the oxidant. The reaction proceeds under mild conditions in the presence of a catalytic amount of TEMPO. Importantly, the catalysts could be conveniently recovered and reused. And this methodology was proved to be applicable for the transformation of various aromatic and aliphatic sulfides into the corresponding sulfoxides with high
A highly selective, environmentally friendly, and scalable electrochemical protocol for the construction of α-acyloxy sulfides, through the synergistic effect of self-assembly-induced C(sp3)–H/O–H cross-coupling, is reported. It features exceptionally broad substrate scope, high regioselectivity, gram-scale synthesis, construction of complex molecules, and applicability to a variety of nucleophiles
precursors in reactions with thioethers under the catalysis of a commercially available Ru(II) complex, from which a variety of sulfimides were synthesized efficiently and mildly. If an allyl group is contained in the thioether precursor, the [2,3]-sigmatropic rearrangement of the sulfimide occurs simultaneously and the N-allyl-N-(thio)amides were obtained as the final products. Preliminary mechanistic studies