Sulfur anes

When a polymer is soaked in a heavily oxidative chemical liquid, such as chromic anhydride-tetrachloroeth-ane, chromic acid-acetic acid, and chromic acid-sulfuric acid, and treated under suitable conditions, polar groups are introduced on the polymer surface and the surface characteristics are improved [49,50]. The sur-... 

In soft cheeses, such as Brie, Camembert, and Limburger, the following sulfur compounds were implicated 3-(methylthio)propanol, MT, DMS, DMDS, DMTS, dimethyl tetrasulfide, methyl ethyl disulfide, diethyl disulfide, 2,4-dithiapentane, 3-methylthio-2,4-dithiapentane, methional, 2,4,5-trithiahex-ane, 1,1-fe-methylmercaptodisulfide, methyl thioacetate (=methanethiol acetate), benzothiazole, methylthiobenzothiazole, methyl ethyl sulfonate, methyl methane thiosulfonate, thiophene 2-aldehyde, and H2S.34 Many of these were only present in small amounts Limburger cheese was notable for 13.2% of DMDS, 0.5% of methyl thioacetate, and 0.8% of DMTS. 

In their earlier studies on the synthesis of a, ajrhydroxyl terminated siloxane oligomers Marvel and co-workers (21) have utilized sulfuric acid as the catalyst in the equilibration of cyclic tetramer (D ) and l,3-bis(4-hydroxylbutyl)tetramethyldisilox-ane (DSX). However the molecular weights of the oligomers obtained were several times higher than the expected values. They have... 

Diorgano tellurium compounds can be easily converted to diorgano tellurium dihalides in reactions with sulfuryl chloride, bromide, and iodide. Carbon tetrachloride, dichlorometh-ane, diethyl ether, petroleum ether, or benzene have been used as reaction media. Chlorinations with sulfuryl chloride, a liquid reagent, avoid the use of gaseous chlorine. Required amounts of sulfuryl chloride can be more easily measured than those of chlorine. Sulfur dioxide formed during the reaction escapes the reaction mixture as a gas, thus facilitating the isolation of the product. For these reasons, sulfuryl chloride has been frequently used, whereas sulfuryl bromide and iodide5-6 have been only infrequently employed. 

Propanol and 2-propanol are commonly referred to as n-propyl alcohol and isopropyl alcohol, respectively. The systematic names of alcohols are obtained by replacing the -ane ending of the corresponding alkane with -anol and using a numeric prefix, when necessary, to identify the carbon atom to which the —OH group is attached. Isopropyl alcohol is made from propylene by means of an interesting hydration reaction that is catalyzed by sulfuric acid. The first step is addition of H to the double bond. 

---