60506-94-7Relevant academic research and scientific papers
Copper Nanoparticles Immobilized on Nanocellulose: A Novel and Efficient Heterogeneous Catalyst for Controlled and Selective Oxidation of Sulfides and Alcohols
Dutta, Apurba,Chetia, Mitali,Ali, Abdul A.,Bordoloi, Ankur,Gehlot, Praveen S.,Kumar, Arvind,Sarma, Diganta
, p. 141 - 150 (2018/12/13)
In this work, we have described the versatility of low metal loading copper nanoparticles immobilized on nanocellulose for the controlled and selective oxidation of sulfides to sulfoxides and primary alcohols to aldehydes using green oxidant at room temperature. Aromatic, aliphatic and heterocyclic sulfides were oxidized to their corresponding sulfoxides with high yields without formation of over oxidized sulfones. Similarly, benzylic, allylic and aliphatic alcohols were selectively oxidized to aldehydes without traces of carboxylic acids in good to excellent yields.
Versatile catalysis of “natural extract”: oxidation of sulfides and alcohols and ipso-hydroxylation of arylboronic acids
Dutta, Apurba,Ali, Abdul Aziz,Sarma, Diganta
, p. 2379 - 2388 (2019/06/28)
Abstract: In the present work, we have described the versatile applications of naturally available inexpensive citrous lemon juice as biocatalyst for controlled oxidation of sulfides and alcohols and ipso-hydroxylation of arylboronic acids using 30% H2O2 as a green oxidant. A series of structurally divergent sulfides and benzyl alcohols were oxidized to their corresponding sulfoxides and aldehydes, respectively, with good-to-excellent yields. Similarly, aryl and heteroaryl boronic acids were rapidly, often within minutes, transformed to their corresponding phenols at room temperature. Graphic abstract: [Figure not available: see fulltext.]
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.
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.
VO2F(dmpz)2: A new catalyst for selective oxidation of organic sulfides to sulfoxides with H2O2
Hussain, Sahid,Talukdar, Dhrubajyoti,Chaudhuri, Mihir K.,Bharadwaj, Saitanya K.
, p. 6512 - 6515,4 (2012/12/11)
A newly developed and structurally characterized vanadium complex [VO 2F(dmpz)2] (dmpz = 3, 5 dimethyl pyrazole) is reported as recyclable catalyst for the selective oxidation of organic sulfides with H 2O2 in C
Chemoselective sulfoxidation by H2O2 or HNO3 using a phosphate impregnated titania catalyst
Bharadwaj, Saitanya K.,Sharma, Susanda N.,Hussain, Sahid,Chaudhuri, Mihir K.
experimental part, p. 3767 - 3771 (2009/10/11)
A variety of organosulfur compounds have been selectively oxidized to the corresponding sulfoxides by either H2O2 or HNO3 using a newly developed solid acid catalyst composed of 84.5% of TiO2 and 15.5% of [Ti4H11(PO4)9]·nH2O (n = 1-4). The chemoselective oxidation of sulfides in the presence of vulnerable groups such as -CN, -C{double bond, long}C-, -CHO, or -OH, as well as sulfoxidation of substrates like benzothiazole, glycosyl sulfide, and dibenzothiophenes is some of the important attribute of the protocol. Nitric acid, under the present experimental conditions, brings about relatively better selectivity than hydrogen peroxide.
Borax-catalyzed and pH-Controlled selective oxidation of organic sulfides by H2O2: An environmentally clean protocol
Hussain, Sahid,Bharadwaj, Saitanya K.,Pandey, Ravindra,Chaudhuri, Mihir K.
experimental part, p. 3319 - 3322 (2011/03/17)
The selective oxidation of sulfides to sulfoxides and sulfones was achieved in high yields at: room temperature with borax as a recyclable catalyst and H2O2 as the terminal oxidant by varying the pH of the reaction medium. The borax/H2O2 system can chemoselectively oxidize alkyl and aryl sulfides in the presence of oxidation-prone functional, groups such as C=C, -CN, and -OH.
GOLD(III) CATALYZED OXIDATION OF SULFIDES TO SULFOXIDES BY NITRIC ACID UNDER PHASE-TRANSFER CONDITIONS: A NEW SYNTHESIS OF SULFOXIDES
Gasparrini, F.,Giovannoli, M.,Misiti, D.,Natile, G.,Palmieri, G.
, p. 3181 - 3184 (2007/10/02)
Gold(III) halides catalyze the oxidation of sulfides to sulfoxides in a phase-transfer process.The organic sulfides, dissolved in nitromethane, are treated with (Bu4N(1+)*AuCl4(1-)) in catalytic amount and aqueous nitric acid wich acts as an oxidant.The oxidation of the thio-group is selective and can be carried out also in the presence of other oxidizable groups, such as vinyl, tertiary amino, hydroxy, diol etc, which are left unchanged.Moreover in the case of asymmetric disulfides the reaction is regiospecific leading to the fomation of a single monosulfoxide.
