29771-81-1Relevant academic research and scientific papers
Sodium sulfate-hydrogen peroxide-sodium chloride adduct: selective protocol for the oxidative bromination, iodination and temperature dependent oxidation of sulfides to sulfoxides and sulfones
Gayakwad, Eknath M.,Patel, Khushbu P.,Shankarling, Ganapati S.
supporting information, p. 6001 - 6009 (2019/04/17)
The regioselective bromination and iodination of unprotected aromatic primary amines using enclathrated hydrogen peroxide as an oxidant under mild conditions has been developed, in which potassium bromide (KBr) and potassium iodide (KI) were used as brominating and iodinating agents, respectively. The adduct shows not only regioselectivity for para- or ortho-isomers but also a remarkable chemoselectivity for monobromination. Selective oxidation of sulfides to sulfoxides and sulfones has also been studied and good to excellent yields of the desired products were obtained. Acetic acid was found to be the solvent of choice for these reactions. This simple method represents an ecologically benign and alternative pathway for the oxidative halogenation of anilines and the oxidation of sulfides to sulfoxides and sulfones.
Efficient synthesis of aliphatic sulfones by Mg mediated coupling reactions of sulfonyl chlorides and aliphatic halides
Fu, Ying,Xu, Qin-Shan,Li, Quan-Zhou,Du, Zhengyin,Wang, Ke-Hu,Huang, Danfeng,Hu, Yulai
supporting information, p. 2841 - 2845 (2017/04/03)
Sulfonyl chlorides were reduced to anhydrous sulfinate salts with magnesium under sonication. These sulfinates were alkylated to sulfones with alkyl chlorides in the presence of catalytic sodium iodide under sonication. A variety of aliphatic sulfones was efficiently prepared by this one-pot two-step procedure.
Bu4NI-Catalyzed Cross-Coupling between Sulfonyl Hydrazides and Diazo Compounds to Construct β-Carbonyl Sulfones Using Molecular Oxygen
Wang, Yaxiong,Ma, Liang,Ma, Meihua,Zheng, Hao,Shao, Ying,Wan, Xiaobing
supporting information, p. 5082 - 5085 (2016/10/14)
A new cross-coupling reaction between sulfonyl hydrazides and diazo compounds has been established, leading to a variety of β-carbonyl sulfones in good yields. This methodology was distinguished by simple manipulation, easily available starting materials, and wide substrate scope. A plausible mechanism involving a radical process was proposed based upon the experimental observations and literature.
Nonanebis(peroxoic acid) mediated efficient and selective oxidation of sulfide
Gayakwad, Eknath M.,Patil, Vilas V.,Shankarling, Ganapati S.
, p. 223 - 230 (2016/01/12)
Two efficient and rapid protocols for the selective oxidation of sulfide in the presence of various oxidizable functionalities such as -CHO, -CH2-OH, alkene and tert amine were investigated, using nonanebis(peroxoic acid) as an oxidant. The acetonitrile based system offers selective oxidation to sulfoxide and sulfone, while the water based system gives selective sulfone formation with a high conversion and 90-100% selectivity. Recovery and recycling of the parent acid of up to 75-80% was achieved in the water based protocol.
Facile synthesis of 3-benzylsulfinyl- and 3-benzylsulfonyl-7- diethylaminocoumarins
Wang, Xiaolong,Xue, Ziyan,Ma, Yanying,Yang, Fang
, p. 493 - 495 (2014/11/08)
The efficient synthesis of a 3-benzylsulfinylcoumarin and a 3-benzylsulfonylcoumarin starting from thiobenzyl alcohol using solvent-free Knoevenagel reaction as the key step is reported. Moreover, the molecular structure of 3-benzylsulfonyl-7-diethylamino
TiO2 nanoparticles and Preyssler-type heteropoly acid modified nano-sized TiO2: A facile and efficient catalyst for the selective oxidation of sulfides to sulfones and sulfoxides
Rahimizadeh, Mohammad,Rajabzadeh, Ghadir,Khatami, Seyed-Mola,Eshghi, Hossein,Shiri, Ali
scheme or table, p. 59 - 64 (2010/09/04)
A new and efficient synthetic method has been developed for the selective conversion of sulfides into their corresponding sulfones and sulfoxides using H2O2 in the presence of neat or Preyssler-type heteropoly acid modified nano-sized TiO2 as catalyst, respectively. The reaction was performed at room temperature with quantitative yields. The catalyst is reusable without significant loss of activity for the next oxidation reaction.
Synthesis of Halothiophene S,C-Ylides and the Corresponding 1,4-Oxathiocines
Meth-Cohn, O.,Vourinen, E.,Modro, T. A.
, p. 4822 - 4827 (2007/10/02)
Crystalline halothiophenium S,C-ylides 2, stabilized by α,α-biscarbonyl (or sulfonyl) substituents have been synthesized from the halo-substituted thiophenes and the corresponding diazoalkanes in the presence of rhodium(II) catalyst.Ylides 2 undergo smoot
