66-27-3Relevant academic research and scientific papers
A high-yield, liquid-phase approach for the partial oxidation of methane to methanol using SO3 as the oxidant
Mukhopadhyay, Sudip,Zerella, Mark,Bell, Alexis T.
, p. 1203 - 1206 (2005)
A direct approach for producing methanol from methane in a three-step, liquid phase process is reported. In the first step, methane is reacted with SO3 to form methanesulfonic acid (MSA) at 75°C using a free-radical initiator and MSA as the solvent. Urea-H2O2 in combination with RhCl3 is found to be the most effective initiator (57% conversion of SO3; 7.2% conversion of CH4). MSA is then oxidized by SO3 at 160°C in a second step to produce a mixture containing methyl bisulfate and some methyl methanesulfonate (87% conversion of MSA). In the third step, the mixture of methyl bisulfate and methyl methanesulfonate is hydrolyzed in the presence of an organic solvent, to produce an organic phase containing methanol and an aqueous phase containing sulfuric acid and some MSA (63% conversion of methyl bisulfate; 72% conversion of methyl methanesulfonate). Overall, 58% of the MSA (of which 23% is derived from methane) is converted to methanol.
METHOD FOR THE PRODUCTION OF ALKANE SULFONIC ACID AT NON-SUPERACIDIC CONDITIONS
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Page/Page column 12, (2020/10/09)
The present invention refers to a method for the production of alkane sulfonic acid, in which SO and an alkane are contacted with each other in the presence of a solvent, said solvent does not constitute a superacid and the combination of said solvent with one or more of the reactants also does not give rise to a superacid.
METHOD FOR THE PRODUCTION OF ALKANE SULFONIC ACID AT SUPERACIDIC CONDITIONS
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Page/Page column 12, (2020/10/09)
The present invention refers to a method for the production of alkane sulfonic acid, in which SO3 and an alkane are contacted with each other in the presence of a solvent, said solvent does constitute a superacid and the combination of said solvent with one or more of the reactants also gives rise to a superacid.
Mechanism and processing parameters affecting the formation of methyl methanesulfonate from methanol and methanesulfonic acid: an illustrative example for sulfonate ester impurity formation
Delaney, Ed,Jacq, Karine,Sandra, Pat,David, Frank,Taylor-Worth, Karen,Lipczynski, Andrew,Van, Reif,Elder, David P.,Facchine, Kevin L.,Golec, Simon,Oestrich, Rolf Schulte,Teasdale, Andrew,Eyley, Stephen C.
supporting information; experimental part, p. 429 - 433 (2010/04/22)
Sulfonate salts offer useful modification of physicochemical properties of active pharmaceutical ingredients (APIs) containing basic groups, but there are regulatory concerns over the presence of sulfonate esters as potential genotoxic impurities (PGIs).
A highly active catalyst supported molecular sieves-NaHCO3 mixture for the selective and advantageous N-monoalkylation of amines
Das, Asish R.,Medda, Arunima,Singha, Raghunath,Guchhait, Nikhil
experimental part, p. 841 - 848 (2010/06/01)
Amines are mono-N-alkylated by alkylmesylates in the presence of catalyst supported molecular sieves-NaHCO3 mixture in a regioselective, chemoselective and non-toxic process. Observed chemoselectivity is supported by 'DFT'.
PREPARATION AND UTILITY OF SUBSTITUTED INDOLES
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Page/Page column 34, (2008/06/13)
Disclosed herein are substituted indoles of Formula I, processes of preparation there of, pharmaceutical compositions thereof, and methods of their use there of.
DIRECT METHOD AND REAGENT KITS FOR FATTY ACID ESTER SYNTHESIS
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Page/Page column 18; 23; 30, (2008/12/07)
Provided are efficient, cost-effective and water tolerant methods (e.g., single-vial methods) for preparing fatty acid esters from organic matter, comprising: obtaining organic matter comprising at least one fat substituent, contacting the organic matter in a reaction mixture with a basic solution under conditions suitable to provide for hydrolytic release of monomeric fatty acids from the at least one fat substituent to provide a base-treated reaction mixture, and esterifying the monomeric fatty acids of the base-treated reaction mixture by acidification of the reaction mixture and treating in the presence of an organic alcohol to provide fatty acid esters. The methods optionally further comprise, prior to esterifying, neutralizing the base-treated reaction mixture to provide for neutralized fatty acids, separating the neutralized fatty acids from the neutralized reaction mixture, and dissolving the separated fatty acids in the esterification reaction mixture. Also provided are related methods and kits for fat analysis.
Manufacture of higher hydrocarbons from methane, via methanesulfonic acid, sulfene, and other pathways
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Page/Page column 25, (2008/06/13)
Hydrocarbon liquids and olefins can be made from methane with greater efficiency than previously available, by converting methane into methanesulfonic acid (MSA), then converting the MSA into a reactive anhydride called sulfene, H2C═SO2. Sulfene will exothermically form ethylene, an olefin. It also can insert methylene groups (—CH2—) into hydrocarbon liquids, to make heavier and more valuable liquids. Other options are disclosed for improved methods of making MSA (such as by using di(methyl-sulfonyl) peroxide as a radical initiator), for converting MSA into products such as dimethyl ether (DME), and for using DME as a “peak shaving” gas that can be injected into natural gas supply pipelines with no disruptions to end-use burners.
Diaminopyrimidine derivatives as growth hormone secrectgogue receptor (GHS-R) antagonists
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Page/Page column 48, (2010/02/13)
The present invention is related to compounds of formula (I), or a therapeutically suitable salt or prodrug thereof, the preparation of the compounds, compositions containing the compounds and the use of the compounds in the prevention or treatment of disorders regulated by the action of ghrelin receptor, including Prader-Willi syndrome, eating disorder, weight gain, weight-loss maintainance following diet and exercise, obesity, and disorders associated with obesity such as noninsulin dependent diabetes mellitus.
A General and Expeditious One-Pot Synthesis of Sulfoxides in High Optical Purity from Norephedrine-Derived Sulfamidites
Ruano, Jose L. Garcia,Alemparte, Carlos,Aranda, M. Teresa,Zarzuelo, Maria M.
, p. 75 - 78 (2007/10/03)
A general and simple procedure for preparing any kind of enantiomerically enriched sulfoxide starting from norephedrine-derived N-benzyloxycarbonylsulfamidite 3a is reported. After one-pot reaction of 3a with RMgX, HBF4, and R'MgX, a variety of sulfoxides 6 are obtained in ee usually higher than 93% and isolated yields ranging between 50 and 78%. The obtained configuration is tunable by simply electing the order of the addition of the reagents.
