Cleavage of Trigonelline

Weijlard, John; Tishler, Max; Messerly, J. P.

doi:10.1021/ja01236a034

Cited by 6 publications

(5 citation statements)

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“…The use of two complementary methods to measure these data demonstrates reliability. Literature data for DMA includes two normal boiling points, the first of which (403.2 K at 101.3 kPa) 19 is in good agreement with our data, but the other (365.2 K at 101.3 kPa) 20 indicates a significantly lower boiling temperature, suggesting that it might have been measured at reduced pressure. The third data point (337.7 K at 13.3 kPa) 21 appears to be a reduced pressure boiling point and is at variance with our data by approximately 7 %.…”

Section: ■ Discussionsupporting

confidence: 89%

Vapor Pressure of 2-Dialkyl Aminoethanethiols

et al. 2013

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The vapor pressures of three 2-dialkyl aminoethanethiol compounds, 2-dimethyl aminoethanethiol (DMA), 2-diethyl aminoethanethiol (DEA), and 2diisopropyl aminoethanethiol (DIA), have been determined using complementary methods that enable data collection in the ambient and high temperature ranges using vapor saturation and differential scanning calorimetry, respectively. Previously published vapor pressure data for these materials are sparse, conflicting, and limited in the pressure ranges covered. This work greatly expands the experimental range and, owing to the good agreement obtained using complementary methods, significantly enhances confidence in the accuracy of the measured data. In addition to the observed data, this report includes derived properties, that is, temperaturedependent volatility and heats of vaporization.

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Section: ■ Discussionsupporting

confidence: 89%

Vapor Pressure of 2-Dialkyl Aminoethanethiols

et al. 2013

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“…At present, there have been no studies on the synthesis of diphenylsulfone‐containing POSS and the impact of sulfone on the POSS thermal stability. Sulfones are useful intermediates in a wide range of fields, including agrochemicals, pharmaceuticals, and polymers . Diarylsulfones are widely used synthons for synthetic organic chemists, and they have many industrial applications …”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and properties of a polyhedral oligomeric octadiphenylsulfonylsilsesquioxane

Yang

2014

J of Applied Polymer Sci

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A novel polyhedral oligomeric octadiphenylsulfonylsilsesquioxane (ODPSS) was synthesized from octaphenylsilsesquioxane and benzenesulfonyl chloride via a Friedel-Crafts reaction with a high yield. ODPSS was identified by Fourier transform infrared spectroscopy, 1 H-NMR, 13 C-NMR, 29 Si-NMR, matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS), wide-angle X-ray diffraction, and elemental analysis to be a kind of polyhedral oligomeric silsesquioxane of a T 8 R 8 structure. ODPSS exhibited superior thermal stability according to thermogravimetric analysis. Its initial thermal decomposition temperature (T onset ) was at 491 C in air and 515 C in nitrogen. Thermal and mechanical properties of epoxy resin (EP) composites with ODPSS added were studied by differential scanning calorimetry and tensile testing. The results show that the incorporation of ODPSS at a low loading content not only improved the glass-transition temperature of the EP composites but also enhanced their tensile strength.

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“…2-(Dialkylamino)ethanethiols of general formula R 1 R 2 NCH 2 CH 2 SH are possible to prepare by the three general methods. The first one involves the reaction of 2-(dialkylamino)ethyl halides with the hydrosulfides of the alkali metals 6,7 . Another method is based on the nucleophilic substitution of the 2-(dialkylamino)ethyl halides with thiourea followed by an alkaline hydrolysis of the isothiouronium salts 8,9 and the last method is the mercaptoethylation of the primary and the secondary amines with ethylene sulfide [10][11][12] or other mercaptoethylating agents such as ethyl 2-hydroxyethylthiolcarbonate [13][14][15] , ethyl 2-mercaptoethylcarbonate [13][14][15] and ethylene monothiolcarbonate 16 .…”

Section: Introductionmentioning

confidence: 99%