ChemInform Abstract: N‐PHOSPHORYLIERTE ESTER N‐SUBSTITUIERTER CARBAMIDSAEUREN

Abstract

Die Chlorphosphate (Ia), Chlorphosphonate (Ib) und Chlorphosphinate (Ic) werden mit einer Suspension des Natriumurethans (II) in Benzol vermischt und 1 ‐ 20 Stdn. gekocht.

Experimental and Computational Investigation of the Energetics of the Three Isomers of Monochloroaniline

“…This was to be expected, since Masalatinova et al used the static bomb combustion calorimetry, a method that is not appropriate for halogenated compounds. 30 Also, the literature values of Zalikin and co-workers 27 for the standard enthalpy of vaporization of 3-chloroaniline, 54.0 ( 0.2 kJ‚mol -1 , and of Stephenson and Malanowski 28 for the standard enthalpy of sublimation of 4-chloroaniline, 90.7 kJ‚mol -1 , are quite different from the ones obtained in the present work (last column of Table 4).…”

“…For chloroanilines, the only experimental values for the standard molar enthalpies of formation, in the gaseous phase, known in the literature, are for 3-chloroaniline, , 4-chloroaniline, , and 2,3,4-, 2,4,5-, 2,4,6-, and 3,4,5-tricholoroanilines . The method used to measure the standard molar enthalpies of formation of 3- and 4-chloroaniline, in the condensed phase, is not very reliable, since they were determined by static bomb combustion calorimetry, a method that is well-known to be unsuitable for the combustion calorimetry of chlorine compounds .…”

Alternative syntheses of linear polyurethanes using masked isocyanate monomers

“…[22] The resulting filtrate was concentrated in vacuo and the residue washed with ether. The ether and dichloromethane insoluble materials were combined, and dried under vacuum (0.1 mbar) to afford the polyurethanes as white (10,11,13 and 21) and off-white solids (12, 15 and 17-20) or thick pale yellow gels (14 and 16).…”

“…Although phenol blocked diisocyanates require typically high temperatures (120-250°C) (c.f. to oxime [4,5], caprolactam [8], imidazoline, tertahydropyrimidine [9] and imidazole [10] blocked isocyanates) to cure hydroxyl functionalised prepolymers there is still considerable interest [3] detailing the applications of such blocked polyisocyanates. Pyrazole blocked diisocyanates [11] in combination with commercially available amine terminated prepolymers (such as the Jeffamine Ò series) cure rapidly between 100 and 120°C with short gelation times rendering these formulations as excellent adhesive mixtures.…”

Standard molar enthalpies of formation of some trichloroanilines by rotating-bomb calorimetry

“…Several chlorinated phenols are commonly used (2) as pesticide components, insecticides, and anti-microbial agents, and they are known to be precursors to the formation of chlorinated dioxins, (1) but energies of combustion are only known for 3-chlorophenol, (3) 4-chlorophenol, (3) pentachlorophenol, (4) and for the six dichlorophenols. (5) For chloroanilines, only the energies of combustion of 3-chloroaniline (6,7) and 4-chloroaniline (6,8) are known.…”