Abstract: The invention relates to a process for the co-production of methyl mercaptan and of dimethyl disulfide, comprising the following successive steps: a) reaction of at least one carbon oxide in the presence of hydrogen sulfide (H2S) and hydrogen to form a stream (M) comprising methyl mercaptan, water, and possibly unreacted hydrogen sulfide, b) purification of the stream (M) to obtain a stream (N) enriched in methyl mercaptan and a stream containing the uncondensable compounds (Muncond), c) optional recycling of the stream of uncondensable compounds (Muncond) obtained from step b) into step a), d) recovery of a first portion of the stream (N) including methyl mercaptan purified in step b), e) oxidation with sulfur of the second portion of the stream (N) of methyl mercaptan, to form a stream (O) comprising dimethyl disulfide, hydrogen sulfide, and possibly unreacted methyl mercaptan, f) purification of the stream (O) to separate, on the one hand, the enriched dimethyl disulfide and, on the other hand, the hydr

Abstract: A polyalkylene glycol-based compound may have formula (1): wherein R1 is a monovalent aromatic hydrocarbon group having 6 to 42 ring carbon atoms; R2 is a monovalent aromatic hydrocarbon group having 6 to 42 carbon atoms or a hydrogen atom; R3 is a divalent hydrocarbon group having 2 to 4 carbon atoms; and m is a number in a range of from 1 to 40.

Abstract: The invention relates to a method for purifying an alkyl hydroperoxide from dialkyl peroxide thereof, comprising a step of distillation in the presence of alcohol and water followed by extraction of the condensates using a hydrocarbon or a hydrocarbon blend.

Abstract: A method for producing a boron-containing compound comprises a step of reacting a first raw material compound having a carbon-carbon double bond with a second raw material compound having a conjugated diene skeleton in the presence of a metal catalyst to obtain a boron-containing compound having a 1,4-diene skeleton, wherein at least one of the first raw material compound and the second raw material compound has a boron-containing group bonded to a carbon atom constituting the carbon-carbon double bond or the conjugated diene skeleton, and the boron-containing compound has the 1,4-diene skeleton and the boron-containing group.

Abstract: Systems and methods for producing MTBE and 1-butene are disclosed. A crude C4 hydrocarbon stream is obtained by removing butadiene from a C4 hydrocarbon mixture of a hydrocarbon cracking unit. The crude C4 hydrocarbon stream is then distilled to form (a) a first distillate stream comprising isobutylene, isobutane, 1-butene, or combinations thereof and (b) a first bottom stream comprising 2-butene, n-butane, a deactivating compound for catalyst of MTBE synthesis. The first distillate stream is then flowed to a MTBE synthesis unit to produce via reaction with methanol. The raffinate from the MTBE synthesis unit comprising isobutane and 1-butene is further separated in a distillation column to produce 1-butene.

Abstract: Provided herein are reactive aromatic molecules (e.g., substituted chrysene heterodimers) encodable as base-four sequences for the design and integrated synthesis of nucleic acids (e.g., DNA, RNA, hybrid DNA/RNA) and associated phospholipid bilayers (e.g., cellular membranes). For example, 3,6,9,12-tetrasubstituted chrysene is coupled with 6,12-disubstituted chrysene through ?-electron stacking to form a base-four heterodimer. The orientation of the ring structure of the tetrasubstituted chrysene in this heterodimer comprises a base-two (binary) structure and the relative alignment of the ring structure of the disubstituted chrysene to the tetrasubstituted chrysene comprises a second independent base-two (binary) structure. This collectively results in a base-four (quaternary) complex composed of four independent reaction environments. Methods of using and forming these molecules and systems associated therewith are also described.

Abstract: Bimetal-incorporated mesoporous silicate catalysts are provided. In embodiments, such a catalyst comprises a silicate lattice, a first transition metal M, and a second transition metal M?, wherein M and M? are selected from Zr, Nb, and W and are directly incorporated into the silicate lattice such that M and M? replace Si atoms. Methods of using the catalysts are also provided, including in methods for dehydrating alcohols. Methods of making the catalysts are also provided.

Abstract: A process for the preparation of trifluoromethanesulfinyl chloride is provided. Trifluoromethanesulfinyl chloride is used as an intermediate for preparing pesticides and insecticides. Trifluoromethanesulfinyl chloride is represented by Formula I: The process for the preparation of trifluoromethanesulfinyl chloride employs readily available reagents and does not involve formation of toxic by-products, and is thus a simple, economic, and environmental-friendly process for the preparation of trifluoromethanesulfinyl chloride.

Abstract: A process produces sodium and/or potassium alkoxides in countercurrent by reactive rectification. Alcohol is reacted in countercurrent with the respective alkali metal hydroxide. The vapours containing alcohol and water are separated in at least two serially arranged rectification columns. The energy of the vapour obtained in the second rectification is utilized for operating the first rectification. This specific energy integration coupled with establishing a certain pressure difference in the two rectification stages makes it possible to cover a particularly large proportion of the energy required for the rectification through heating steam and minimizes the use of electricity.

Abstract: Provided are a tricyclodecane dimethanol composition, in which a ratio of isomers is controlled, and a preparation method thereof.

Abstract: The invention relates to a process for producing 4,4?-dichlorodiphenyl sulfoxide comprising: (I) reacting thionyl chloride, chlorobenzene and aluminum chloride in a molar ratio of thionyl chloride:chlorobenzene:aluminum chloride of 1:(6 to 9):(1 to 1.5) at a temperature in the range from 0 to below 20° C., forming an intermediate reaction product and hydrogen chloride; (II) mixing aqueous hydrochloric acid and the intermediate reaction product at a temperature in the range from 70 to 110° C.

Abstract: A method for preparing a compound of formula RSH where R represents an alkyl group, by gas-phase catalytic reaction of hydrogen sulfide with a compound of formula ROH, in the presence of a solid catalyst, according to which method the reaction is performed in the presence of a catalyst which includes one or several pure or mixed rare-earth oxide(s), one or several pure or mixed rare-earth sulfide(s), or one or several pure or mixed rare-earth oxysulfide(s). When the rare earth is lanthanum, the catalyst is a mixed oxide of lanthanum and of at least one metal selected from rare earths or not and when the rare earth is cerium, the catalyst is supported on an alumina.

Abstract: A process for the selective dimerization and etherification of isoolefins. The process including feeding a mixed C5 stream to a selective hydrogenation unit to convert dienes to olefins and isoolefins, producing a hydrogenated effluent stream. The hydrogenated effluent stream is fed to a first fixed bed reactor, producing a first reactor effluent. The first reactor effluent is fed to a catalytic distillation reactor system, producing a first overheads including unreacted olefins, isoolefins, oxygenate, and one or more C5 ethers and a first bottoms including dimers of the isoolefins, any produced trimers of the isoolefins, and heavy oxygenates. The first overheads is fed to a second fixed bed reactor, producing a second reactor effluent including dimers of the isoolefins, unreacted C5s, and unreacted oxygenates.

Abstract: Systems and processes for the efficient conversion of high concentration isoolefin streams to tertiary alkyl ethers are disclosed. The systems and processes may include a feed system to advantageously divide the high concentration isoolefin feed to multiple fixed bed reactors and a catalytic distillation reactor to control the reaction exotherm and achieve a high isoolefin conversion.

Abstract: Disclosed herein are methods, processes and compositions for preparing a compound of formula 8: (8), and formula 18: (18). The methods and processes comprise performing a first allylic oxidation, a protection reaction, a second allylic oxidation, a reduction reaction, performing an acid-catalyzed coupling reaction, a methylation reaction and a deprotection reaction. Disclosed herein are methods, processes and compositions for enantioselectively preparing compounds of formulae 8 and 18. Also disclosed herein are compositions comprising compounds of formulae 8, 18 and/or intermediates and/or starting material thereof.

Abstract: A method of washing an ion exchange resin, including washing an ion exchange resin with deionized water (DI water) one or more times to prepare a washed ion exchange resin; and storing the washed ion exchange resin in dionized water. A method for producing bisphenol A using the method of washing an ion exchange resin. The resulting bisphenol A has improved purity, thermal stability, color, and the like.

Abstract: Provided herein are boron-containing compounds, pharmaceutical compositions comprising such compounds, and methods of using such compounds to treat diseases or disorders.

Abstract: An organic electroluminescence device of one or more embodiments includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer and a second electrode disposed on the electron transport region, wherein the emission layer includes a polycyclic compound represented by Formula 1, thereby showing high emission efficiency: wherein Y is O or S.

Abstract: There is provide herein a compound of Formula (1): wherein R1, R2, R3, R4, and R5 are each independently H or an organic group.

Abstract: A process for producing ethylene and at least one of butanol and an alkyl tert-butyl ether from field butane includes separating the field butane into an n-butane stream and an isobutane stream; cracking the n-butane stream to obtain a cracked product stream comprising n-butane, 1-butene, 2-butene, butadienes, or a combination comprising at least one of the foregoing; and at least one of the following: (1) separating the cracked product stream to obtain a butane stream and a butene stream, and reacting the butene stream with water to obtain a fuel additive comprising butanol, and (2) dehydrogenating the isobutane stream in a dehydrogenation unit to form an isobutene stream and reacting the isobutene stream with an aliphatic alcohol to produce an alkyl tert-butyl ether.