Tert-butyl Mercaptan Research Articles

Phase Equilibria on Seven Binary Mixtures

Vapor−liquid equilibria are reported for the following five systems: phenol + styrene; ethyl mercaptan + n-butane; tert-butyl mercaptan + propane; dimethyl ether + propane; trifluoroacetic acid + hydrogen chloride. The system pressure and temperature were measured at several charge compositions along two isotherms for each system. Equilibrium vapor- and liquid-phase compositions were derived from the PTx data using the Soave equation of state to represent the vapor phase and the Wilson or NRTL activity coefficient model to represent the liquid phase. Liquid−liquid equilibrium studies were performed on the dimethyl carbonate + water system at two temperatures by analyzing samples taken from each liquid phase. The solubility of hydrogen in α-methyl benzyl alcohol was measured at three pressures at each of three temperatures.

Synthesis and Structural Characterization of Dimeric and Trimeric Indium Thiolates

Reaction of Mes3In (Mes = 2,4,6-trimethylphenyl) with tert-butyl mercaptan, rerf-amyl mercaptan, 2-tertbutylthiophenol, and triphenylsilanethiol yields [MeszIn@-SR)lz (R = r-Bu (l), tert-amyl (2), 2t -BuCa (3), and SiPh3 (4)). A trimeric indium thiolate, [Me*In@-SSiPh3)]3 (5), is isolated from the reaction of Me3In with HSSiPh3. The first structures of diand trimeric indium thiolato species, 1, 2, 4, and 5, have been determined. The structure of 1 was determined in the space group C21c (No. 15) with cell constants a = 28.809(6) A, b = 9.041(2) A, c = 18.156(5) A, p = 110.24(2), V = 4437(2) A3, and Z = 8; R = 5.40%, R, = 5.67%. 2 and 4 crystallize as dimers in the space group Pi (No. 2). For 2: a = 11.631(7) A, b = 12.866(3) A, c = 15.767(5) A, a = 90.09(2), /? = 93.70(4), y = 105.13(3), V = 2273(1) A3, Z = 4, R = 8.1%, R, = 7.4%. For 4: a = 12.423(3) A, b = 13.019(3) A, c = 14.126(2) A, a = 91.50(1), p = 113.23(1), y = 117.72(2), V = 1795.8(6) A3, Z = 2, R = 3.75%, R, = 4.3%. In 1,2, and 4, the (In92 core is planar with the alkyl groups on S oriented in a transoid fashion. 5 exists as a trimer in the space group Pi (No. 2): a = 15.012(5) A, b = 17.784(5) A, c = 24.838(8) A, a = 76.23(2), p = 83.03(3), y = 69.84(2), V = 6040(3) A3, Z = 4 (trimers), R = 5.99%, R, = 5.34%.

Thiol peroxidase activity of diaryl ditellurides as determined by a proton NMR method

A 1 H NMR method was developed for the assessment of the gluthathione peroxidase-like activity of synthetic compounds. In this assay, thiols (N-acetylcysteine, tert-butyl mercaptan and 1-octyl mercaptan) were oxidized to the corresponding disulfides in CD 3 OD or CD 3 OD/D 2 O in the presence of hydrogen peroxide and the catalyst to be evaluated. The time required to reduce the thiol concentration with 50%, t 50 , was determined as a measure of the thiol peroxidase activity of the catalyst

A simple and convenient photodecarboxylation method of intact carboxylic acids in the presence of aza aromatic compounds

A very simple method of photodecarboxylation of intact carboxylic acids leading to alkanes is described which uses aza aromatic compounds as light absorbers and tert-butyl mercaptan as a hydrogen donor. This method is general and can be applied to various primary, secondary and tertiary carboxylic acids. The corresponding alkanes are usually produced in yields of 60%–80%. The formation of a ground state complex of the aza aromatic compounds with the carboxylic acids via hydrogen bonding is shown to be crucially important to the photodecarboxylation. Similar decarboxylation of α-hydroxycarboxylic acids in the absence of tert-butyl mercaptan under aerated conditions gives the corresponding carbonyl compounds in good yields.

ChemInform Abstract: Catalytic Function of the Fe4S4 Cluster in the Reduction of Aromatic Nitro Compounds with tert-Butyl Mercaptan and Triethylamine.

ChemInform Abstract: Catalytic Function of the Fe4S4 Cluster in the Reduction of Aromatic Nitro Compounds with tert-Butyl Mercaptan and Triethylamine.

A new stable fluorine-containing thiete

We have shown that the reaction of the trimer of hexafluoropropylene, namely, perfluoro3-isopropyl-4-methyl-2-pentene (I) with tert-butyl mercaptan in the presence of triethylamine gives perfluoro-2,4,4-trimethyl-3-isopropyl-2-thiete (II), which is the first perfluoroalkylthiete reported, in addition to other products. Thiete (II) is the product of the decomposition of intermediate sulfide (A) and is readily separated by distillation in 30.4% yield.

Desorption of carbon monoxide from nickel using mercaptans

The displacement of CO chemisorbed on nickel (as evaporated films and silica-supported samples) by 1-propyl, 2-propyl, 1-butyl, 2-butyl, and tert-butyl mercaptan was studied using infrared spectroscopy. The CO was gradually displaced as the mercaptan pressure increased. When using Ni SiO 2 adsorbents, some of the bridge-bonded CO is first converted to a linear species and then displaced. Also the poisoned Ni SiO 2 surfaces would readsorb CO; however, only the linear species was stable enough to withstand evacuation.

Ion-molecule reactions in thiols and alkyl sulfides. Photoionization of methyl, ethyl, propyl and tert-butyl mercaptan, and methyl and ethyl sulfide

ADVERTISEMENT RETURN TO ISSUEArticleNEXTIon-molecule reactions in thiols and alkyl sulfides. Photoionization of methyl, ethyl, propyl and tert-butyl mercaptan, and methyl and ethyl sulfideJ. M. Brupbacher, C. J. Eagle, J. A. Koprio, and E. Tschuikow-RouxCite this: J. Phys. Chem. 1977, 81, 12, 1125–1128Publication Date (Print):June 1, 1977Publication History Published online1 May 2002Published inissue 1 June 1977https://doi.org/10.1021/j100527a001RIGHTS & PERMISSIONSArticle Views39Altmetric-Citations2LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (472 KB) Get e-Alerts

Effect of Natural Gas Odorants on Polyvinyl Chloride Pipe

From studies of the effect of natural gas odorants on polyvinyl chloride and polyethylene pipe, the University of Saskatchewan and the Saskatchewan Power Corp. conclude that PE pipe is not affected by the odorants, while the mechanical strength of PVC pipe is affected by some. After 10-day exposures to liquid mercaptan-based odorants, the PE samples showed no physical changes and the odorants retained their original composition. The PVC samples, however, developed a distinct yellow coloration and showed considerable swelling, while the odorants changed composition slightly. Mechanical-strength tests indicated that PVC pipe was affected in increasing order by isopropyl mercaptan, methyl sulfide, and n-propyl mercaptan; tert-butyl mercaptan proved essentially unreactive with PVC.

ChemInform Abstract: FAR‐INFRARED SPECTRA AND BARRIERS TO INTERNAL ROTATION OF ISOPROPYL ALCOHOL AND ALKYL MERCAPTANS

Far-infrared spectra of isopropyl alcohol, ethyl mercaptan, isopropyl mercaptan, tert-butyl mercaptan, and their deuterated analogs have been examined. The observed torsional transitions are interpreted with a potential function of the form V = 12ΣkVk(1 − cos kα). The obtained energy differences are in good agreement with those determined from calorimetric data. The coupling of torsional vibration with other low frequency vibrations is discussed.

Far-infrared spectra and barriers to internal rotation of isopropyl alcohol and alkyl mercaptans

Far-infrared spectra of isopropyl alcohol, ethyl mercaptan, isopropyl mercaptan, tert-butyl mercaptan, and their deuterated analogs have been examined. The observed torsional transitions are interpreted with a potential function of the form V = 1 2 Σ kV k(1 − cos kα) . The obtained energy differences are in good agreement with those determined from calorimetric data. The coupling of torsional vibration with other low frequency vibrations is discussed.