- g-C3N4/H3PW4Mo8O40 S-scheme photocatalyst with enhanced photocatalytic oxidation of alcohols and sulfides
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In this work, graphitic carbon nitride (g-C3N4) decorated with molybdenum-substituted tungstophosphoric acid as a novel photocatalyst (H3PW4Mo8O40/g-C3N4) was used to catalyze the oxidation of alcohols and sulfides. H3PW4Mo8O40/g-C3N4 (PW4Mo8/g-C3N4) displays higher photocatalytic activity under visible light irradiation for the oxidation of alcohols and sulfides compared with Keggin/g-C3N4 (PW12/g-C3N4). To obtain the optimum value, molybdenum substitution contents (H3PW12-xMoxO40) were changed from x = 4 to 12. The results showed that PW4Mo8 produces the best yield under visible-light irradiation. The results showed that PW4Mo8 was the best sample. The reaction rate increase can be due to the redox and acid properties of PW4Mo8/g-C3N4. This study provides a new insight for the preparation of highly efficient photocatalysts for the oxidation of organic compounds.
- Fazlali, Farnaz,Khazaee, Zeynab,Najminejad, Zohreh,Nejat, Razieh,Shahraki, Somaye
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- Fabrication of molybdenum-substituted tungstophosphoric acid immobilized onto functionalized graphene oxide: Visible light-induced photocatalyst for selective oxidation of sulfides to sulfoxides
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Three set of molybdenum-substituted tungstophosphoric acid (H3PW12-yMoyO40 and y = 0, 6 and 12) was supported onto ethylene diamin functionalized magnetic graphene oxide (EDMG) and used to catalyze the selective
- Fakhri, Hanieh,Mahjoub, Alireza,Maridiroosi, Anasheh,Nejat, Razieh
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- Aluminum(III) Chloride Promoted Oxygen Transfer: Selective Oxidation of Sulfides to Sulfoxides
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An efficient selective oxidation of sulfides to sulfoxides has been developed by means of AlCl 3 -promoted oxygen transfer from phenyliodine diacetate [PhI(OAc) 2 ]. AlCl 3 proved to be the optimalLewis acid for the activation of PhI(OAc) 2. Various substituted sulfides were selectively transformed into the corresponding sulfoxides in good to excellent yields (≤99%). The high efficiency, excellent functional-group compatibility, broad substrate scope, and mild conditions render the current transformation useful for the synthesis of sulfoxides.
- Xie, Yongtao,Li, Yuxin,Zhou, Sha,Zhou, Shaa,Zhang, Yan,Chen, Minggui,Li, Zhengming
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supporting information
p. 340 - 343
(2017/12/06)
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- Visible light catalyzed methylsulfoxidation of (het)aryl diazonium salts using DMSO
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The visible light catalyzed methylsulfoxidation of (het)aryl diazonium salts using DMSO is illustrated. This is the first example of DMSO being used as the source of the methylsulfinyl group. The procedure tolerates a wide range of functional groups on (het)aryl diazonium salts and provides aryl methyl sulfoxides in excellent yields under mild reaction conditions.
- Pramanik, Mukund M. D.,Rastogi, Namrata
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supporting information
p. 8557 - 8560
(2016/07/13)
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- Oxidation of organic sulfides by imidazolium fluorochromate: A kinetic and mechanistic approach
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The oxidation of organic sulfides by imidazolium fluorochromate resulted in the formation of the corresponding sulfoxides. The reaction is first order with respect to imidazolium fluorochromate. A Michaelis-Menten type kinetics was observed with respect t
- Mathur, Lokesh,Choudhary,Prakash, Om,Sharma, Pradeep K.
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p. 2597 - 2603
(2014/06/09)
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- Oxidation of organic sulfides by tetraethylammonium chlorochromate: A kinetic and mechanistic study
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The oxidation of organic sulfides by tetraethylammonium chlorochromate (TEACC) resulted in the formation of the corresponding sulfoxides. The reaction is first order with respect to both TEACC and the sulfide. The reaction is catalyzed by toluene-p-sulfon
- Sharma, Deepika,Pancharia,Vadera,Sharma, Pradeep K.
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experimental part
p. 315 - 326
(2012/01/04)
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- Kinetics and mechanism of the oxidation of organic sulfides with bis(pyridine)silver permanganate
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The oxidation of organic sulfides by bis(pyridine)silver permanganate (BPSP) resulted in the formation of the corresponding sulfoxides. The reaction is first order with respect to both BPSP and sulfides. The reaction is catalysed by hydrogen ions. The rat
- Banerji, Jayshree,Banerji,Kotai, Laszlo,Sharma, Deepika,Sharma, Pradeep K.
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scheme or table
p. 1879 - 1886
(2012/04/04)
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- Kinetics and mechanism of the oxidation of some organic sulfides by morpholinium chlorochromate
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The oxidation of organic sulfides by morpholinium chlorochromate (MCC) resulted in the formation of the corresponding sulfoxides. The reaction is first order with respect to both MCC and the sulfide. The reaction is catalyzed by toluene-p-sulfonic acid (T
- Malani, Neha,Baghmar, Manju,Sharma, Pradeep K.
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experimental part
p. 65 - 72
(2009/04/07)
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- Kinetics and mechanism of the oxidation of organic sulphides by quinolinium bromochromate
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The oxidation of thirty-four sulphides by quinolinium bromochromate (QBC) has been found to result in the formation of the corresponding sulphoxides. The reaction is first order with respect to both QBC and the sulphide. The reaction is catalysed by hydro
- Dhariwal, Varsha,Yajurvedi, Deeksha,Sharma, Pradeep K.
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p. 1158 - 1164
(2007/10/03)
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- Convenient one-pot procedure for converting aryl sulfides to nitroaryl sulfones
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When treated with nitrogen dioxide and ozone in inert solvent at 0°C or below, aryl sulfides underwent smooth oxidative nitration to give nitroaryl sulfones in good yield. Using this methodology, a series of mono- and di-nitrated aryl sulfones were prepared from methyl phenyl sulfide and diphenyl sulfide and their physical data are presented.
- Nose, Masatoshi,Suzuki, Hitomi
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p. 1065 - 1071
(2007/10/03)
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- Linear free energy relationships near isokinetic temperature. Oxidation of organic sulfides with nicotinium dichromate
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The nicotinium dichromate (NDC) oxidation of methyl phenyl sulfide (MeSPh) in acetonitrile, brought about by p-toluenesulfonic acid (TsOH), is first order in NDC and TsOH, and is zero order with respect to MeSPh in the concentration range investigated. Th
- Karunakaran, Chockalingam,Chidambaranathan, Vaithiyalingam
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- Kinetics and mechanism of the oxidation of organic sulfides by quinolinium fluorochromate
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The oxidation of organic sulfides by quinolinium fluorochromate (QFC), to the corresponding sulfoxides, is first order with respect to QFC. Michaelis-Menten type kinetics were observed with respect to the sulfide. The correlation analyses of the rate of t
- Bhandari, Abhinav,Sharma, Pradeep. K.,Banerji, Kalyan K.
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p. 653 - 675
(2007/10/03)
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- Kinetics and correlation analysis of reactivity in oxidation of organic sulfides by hexamethylenetetramine-bromine
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The oxidation of organic sulfides by hexamethylenetetramine-bromine (HABR) to the corresponding sulfoxides is first order with respect to HABR. Michaelis-Menten-type kinetics were observed with respect to the sulfide. It is proposed that HABR itself is th
- Choudhary, Kirti,Suri, Deepa,Kothari, Seema,Banerji, Kalyan K.
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p. 283 - 292
(2007/10/03)
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- Lack of linear free energy relationships in the p-toluenesulfonic acid mediated chromium(VI) oxidation of organic sulfides
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The oxidation of methylphenyl sulfide by imidazolium dichromate in acetonitrile mediated by p-toluenesulfonic acid is first order in IDC and TsOH and zero order in MeSPh in the concentration range studied. The IDC oxidation of 14 para-, meta-, and ortho-s
- Karunakaran, Chockalingam,Chidambaranathan, Vaithiyalingam
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p. 1123 - 1128
(2007/10/03)
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- Kinetics and Mechanism of the Oxidation of Organic Sulfides by Bis(2,2′-bipyridyl)copper(II) Permanganate
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The oxidation of 34 sulfides by bis(2,2′-bipyridyl)copper(II) permanganate (BBCP) resulted in the formation of the corresponding sulfoxide. The reaction is first order with respect to BBCP. Michaelis-Menten type kinetics were observed with respect to the
- Bohra, Anupama,Sharma, Pradeep K.,Banerji, Kalyan K.
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p. 3562 - 3567
(2007/10/03)
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- Kinetics and Mechanism of the Oxidation of Organic Sulfides by Pyridinium Bromochromate
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The oxidation of thirty-four sulfides by pyridinium bromochromate (PBC) resulted in the formation of the corresponding sulfoxides.The reaction is first order with respect to both PBC and the sulfide.The oxidation was studied in 19 different solvents.An an
- Loonker, Kavita,Sharma, Pradeep K.,Banerji, Kalyan K.
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p. 1262 - 1285
(2007/10/03)
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- Aprotic diazotization in the presence of cuprous cyanide
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In a procedure of extreme simplicity and rapidity a mixture of an aromatic primary amine, copper (I) cyanide and an alkyl nitrite in dimethyl sulphoxide yielded fair to moderate yields of the corresponding nitriles. Side processes observed were reduction (NH2&[H), nitration (NH2←NO2) and hydroxylation (NH2&[OH). In the case of polyhaloanilines halogen dance products could be detected.
- Giumanini, Angelo G.,Verardo, Giancarlo,Geatti, Paola,Strazzolini, Paolo
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p. 7137 - 7148
(2007/10/03)
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- Benzisoselenzol-3(2H)-ones and bis(2-carbamoyl)phenyl diselenldes as new catalysts for hydrogen peroxide oxidation of organic compounds
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Bis (2-carbamoyl)phenyl diselenides and benzisoselenazol-3(2H)-ones, particularly ebselen , have been found as new catalysts for hydrogen peroxide oxidation of sulfides into sulfoxides, N,N-dimethylhydrazones into nitriles, and azines into carbonyl compounds.
- Mlochowski, Jacek,Giurg, Miroslaw,Kubicz, Elzbieta,Said, Samy B.
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p. 291 - 300
(2007/10/03)
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- Kinetics and Mechanism of Oxidation of Organic Sulphides by Lead Tetraacetate
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Kinetics of oxidation of thirty-three organic sulphides, comprising monosubstituted aryl methyl sulphides and alkyl phenyl sulphides, by lead tetraacetate (LTA), to yield the corresponding sulphoxides, have been studied.The reaction is first order with re
- Banerji, Kalyan K.
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p. 759 - 763
(2007/10/02)
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- Phenyltrimethylammonium Tribromide for Selective Oxidation of Sulfides to Sulfoxides. A Convenient Synthesis of Sulfinyl-18O-Labelled Sulfoxide Carboxylic Acids
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Various sulfides can be oxidized selectively to the corresponding sulfoxides in high yields using phenyltrimethylammonium tribromide in aqueous pyridine solution.This method allows 18O-labelled sulfoxides to be prepared with no loss of isotope
- Rabai, Jozsef,Kapovits, Istvan,Tanacs, Bela,Tamas, Jozsef
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p. 847 - 849
(2007/10/02)
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- NEIGHBOURING-GROUP PARTICIPATION IN THE OXIDATION OF SULPHIDES WITH HYDROGEN PEROXIDE
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Using a set of sulphides (o- and p-XC6H4SMe), the electronic effect, steric hindrance and anchimeric assistance for the O-transfer by H2O2 have been investigated by a kinetic method.The steric effect and anchimeric assistance were evaluated by comparing t
- Ruff, Ferenc,Kucsman, Arpad
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p. 241 - 246
(2007/10/02)
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- Generation of Sulfenate Salts via Ipso-substitution of Azaheterocyclic Sulfoxides. First Preparation and Characterization of Sodium 2-Pyridinesulfenate
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2-Alkyl- or 2-aryl-sulfinylpyridine N-oxides undergo ipsosubstitution reaction with sodium ethoxide to afford sodium sulfenates which were converted soon to the corresponding sulfinates upon contact with oxygen.Sodium 2-pyridinesulfenate was prepared and characterized by FT-IR as the first example of stable sulfenate.
- Furukawa, Naomichi,Konno, Yasuo,Tsuruoka, Masayuki,Fujihara, Hisashi,Ogawa, Satoshi
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p. 1501 - 1504
(2007/10/02)
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- MECHANISM OF THE OXIDATION OF ORGANIC SULPHIDES BY PERMANGANATE ION
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The kinetics of the oxidation of number of aryl methyl, alkyl phenyl, dialkyl and diphenyl sulphides by permanganate ion to yield the sulphoxides, have been studied.The reaction is first order with respect to the sulphide and permanganate and is independe
- Banerji, Kalyan K.
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p. 2969 - 2976
(2007/10/02)
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- Kinetics of the Oxidation of Organic Sulphides by Pyridinium Fluorochromate
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The kinetics of the oxidation of a number of monosubstituted aryl methyl, alkyl phenyl, dialkyl, and diphenyl sulphides by pyridinium fluorochromate (PFC) to yield the corresponding sulphoxides have been studied.The reaction is first order with respect to
- Banerji, Kalyan K.
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p. 2065 - 2070
(2007/10/02)
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- Pyridinium Chlorochromate Oxidation of ortho-Substituted Phenyl Methyl Sulphides
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Bimolecular rate constants for the pyridinium chlorochromate oxidation of several ortho-substituted phenyl methyl sulphides have been determined spectrophotometrically in 60percent (v/v) aqueous acetic acid.Correlation of rate constants at 30 deg C by ext
- Rajasekaran, K.,Baskaran, T.,Gnanasekaran, C.
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p. 956 - 957
(2007/10/02)
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- Mechanism of the Oxidation of Sulphides with Sodium Periodate
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The kinetics of the oxidation of RSAr, R2S, and (CH2)nS sulphides with NaIO4 yielding sulphoxides were investigated in ethanol-water solutions, and the rate equation v = k2 was found to be valid.The observed substituent (ρ -1
- Ruff, Ferenc,Kucsman, Arpad
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p. 683 - 688
(2007/10/02)
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- Sulphinyl, Sulphonyl, and Sulphonium Groups as Leaving Groups in Aromatic Nucleophilic Substitutions
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The kinetics of hydrolysis of mononitrophenyl sulphoxides, sulphones, and sulphonium methylsulphate by sodium hydroxide have been measured in 25percent aqueous dioxan.The mobility order of the leaving groups (+SMe2 >/= SO ca. SO2 for p-nitro-derivatives, and SO > SO2 for o-nitro-derivatives) are discussed in terms of electronic and steric effects.
- Chisari, Alfio,Maccarone, Emanuele,Parisi, Giovanni,Perrini, Giancarlo
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p. 957 - 960
(2007/10/02)
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