Reusable BNPs-SiO<sub>2</sub>
@(CH<sub>2</sub>
)<sub>3</sub>
NHSO<sub>3</sub>
H-catalysed selective oxidation of sulfides to sulfones
作者:Kiumars Bahrami、Minoo Khodamorady
DOI:10.1002/aoc.4553
日期:2018.12
(BNPs‐SiO2@(CH2)3NHSO3H) was found to be an efficient heterogeneous nanocatalyst for the selective oxidation of sulfides to sulfones in the presence of H2O2. Excellent yields, easy and quick isolation of products, short reaction times and excellent selectivity are the main advantages of this method. The catalyst was characterized using Fourier transform infrared spectroscopy, energy‐dispersive X‐ray analysis, X‐ray
Palladium-Catalyzed Direct α-Arylation of Methyl Sulfones with Aryl Bromides
作者:Bing Zheng、Tiezheng Jia、Patrick J. Walsh
DOI:10.1021/ol400472v
日期:2013.4.5
A direct and efficient approach for palladium-catalyzed arylation of aryl and alkyl methyl sulfones with aryl bromides has been developed. The catalytic system affords arylated sulfones in good to excellent yields (73–90%).
Ni-catalyzed non-activated C–S bond cleavage at ambient temperature for the synthesis of sulfur-containing polycyclic compounds
作者:Takanori Shibata、Ayato Sekine、Mika Akino、Mamoru Ito
DOI:10.1039/d1cc03226g
日期:——
tetracyclic compounds at ambient temperature. The transformation was initiated by non-activated sp2 C–S bond cleavage along with consecutive alkyne insertions. A double intramolecular reaction of a tetrayne and an intermolecular reaction of monoynes were also available, and the corresponding polycyclic compounds were obtained. Moreover, the obtained cycloadduct showed photo-catalytic activity in benzylic
Base-controlled divergent synthesis of vinyl sulfones from (benzylsulfonyl)benzenes and paraformaldehyde
作者:Fuhong Xiao、Yangling Hu、Huawen Huang、Fen Xu、Guo-Jun Deng
DOI:10.1039/d0ob00362j
日期:——
A tuneable metal-free protocol for the selective preparation of α-substituted vinyl sulfone and (E)-vinyl sulfone derivatives has been described. The base played an important role in the selectivity control of transformation.
Modular Synthesis of Triarylmethanes through Palladium-Catalyzed Sequential Arylation of Methyl Phenyl Sulfone
作者:Masakazu Nambo、Cathleen M. Crudden
DOI:10.1002/anie.201307019
日期:2014.1.13
Triarylmethanes, which are valuable structures in materials, sensing and pharmaceuticals, have been synthesized starting from methylphenylsulfone as an inexpensive and readily available template. The three aryl groups were installed through two sequential palladium‐catalyzed CH arylation reactions, followed by an arylative desulfonation. This method provides a new synthetic approach to multisubstituted