Carbonylation reaction Communication 11. Carbonylation of amino alcohols and some cyclic amines with carbon monoxide in the presence of mercuric acetate

Conclusions Primary amino alcohols react with CO in the presence of mercuric acetate at 100–200° and a pressure of 100–150 atm to give the corresponding N-(hydroxyalkyl)formamides in a yield of 1.4–2.5 M/M of reacted Hg(OCOCH₂)₃. Morpholine under analogous conditions forms the corresponding formyl derivative and the urea derivative in a 1.2–51 ratio, while cyclohexylamine forms the same derivatives in an 0.7 1 ratio.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1533–1536, July, 1973.     

Electron-donor-acceptor complexing reagents in the analysis of pesticides. VI

Summary Pesticides may be detected following thin-layer chromatography by spraying the chromatogram with a reagent which forms a-complex with the pesticide. The effect of various pesticide structures and substituents in choosing a suitable-complexing reagent is discussed, as well as the effect of these factors in influencing the colour of the complex formed. Quantitative analyses may be performedin situ on the thin-layer chromatogram and positive identification of the-complexed compounds may be made by mass spectrometry. The procedure should be applicable for formulation analysis or studies of pesticide decomposition.

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Zusammenfassung Zum Nachweis von Pestiziden besprüht man deren Dünnschichtchromatogramme (DC) mit einem zur Bildung eines-Komplexes geeigneten Reagens. Die Bedeutung verschiedener Pestizidstrukturen und -Substituenten bei der Wahl eines solchen Reagens wurde erörtert; ebenso der Einfluß der genannten Faktoren auf die Farbe des Komplexes. Quantitative Bestimmungen lassen sich unmittelbar auf dem DC, Nachweise der einzelnen komplexierten Verbindungen mit Hilfe der Massenspektrometrie durchführen. Das Verfahren eignet sich zur Strukturanalyse sowie zur Untersuchung von Pestizidabbauproblemen.

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Issued as NRCC No. 13120.     

The role of elastic scattering analysis in studies of anodic oxidation

Résumé L'analyse par diffusion élastique peut détecter de microquantités à condition qu'elles soient concentrées dans des films minces. En outre, la méthode peut directement fournir des indications sur l'emplacement des éléments. Ces caractéristiques ont été mises à profit pour apporter un instrument utile à l'étude des processus d'oxydation.      

Über die Bromierung von 9-Vinylcarbazol

Zusammenfassung Bei der Bromierung von N-Vinylcarbazol wird unter verschiedenen Reaktionsbedingungen 3.6-Dibromcarbazol, 3.6-Dibrom-9-(1.2-dibromäthyl)carbazol, 3.6-Dibrom-9-(1-methoxy-2-bromäthyl)-carbazol und 3.6-Dibrom-9-(1-äthoxy-2-bromäthyl)-carbazol erhalten. Aus 9-Äthylcarbazol wurde 3.6-Dibrom-9-äthylcarbazol, aus 1.2-Bis(9-carbazyl)cyclobutan 1.2-Bis[9-(3.6-dibromcarbazyl)]cyclobutan und aus Poly-N-vinylcarbazol Poly-3.6-dibrom-9-vinylcarbazol dargestellt. Der Bromierungsmechanismus wird diskutiert.

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Bromination of N-vinylcarbazole

Bromination of N-vinylcarbazole under various conditions gives 3.6-dibromocarbazole, 3.6-dibromo-9-(1.2-dibromoethyl)-carbazole, 3.6-dibromo-9-(1-methoxy-2-bromoethyl)carbazole, and 3.6-dibromo-9-(1-ethoxy-2-bromoethyl)carbazole. 3.6-Dibromo-9-ethylcarbazole and 1.2-bis[9-(3.6-dibromocarbazyl)]-cyclobutane have been obtained from the corresponding carbazole derivatives, and poly-N-vinylcarbazole was brominated to poly-3.6-dibromo-9-vinylcarbazole. The bromination mechanism is discussed.

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An dieser Arbeit nahm ich als UNO-Stipendiat teil, wofür ich der UNO sehr zu Dank verpflichtet bin.     

Hydrolysis of dimethyl 1-acetoxy-2,2,2-trichloroethyl phosphonate

Conclusions The hydrolysis of chloroacetophos in water includes the parallel cleavage of acetic acid, hydrochloric acid and methanol. The ratio of the products, formed in the parallel steps, was determined, and we also determined the total rate constant for the hydrolysis of chloroacetophos.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 10, pp. 2336–2338, October, 1971.     

Co-Pt bimetallic catalysts for the selective oxidation of carbon monoxide in hydrogen-containing mixtures

The performance of a Co-Pt powder and of Co-Pt catalysts supported on γ-Al₂O₃ and on the graphite-like carbon material Sibunit in selective CO oxidation in hydrogen-containing mixtures is considered. Fine particles of metal-metal solid solutions and intermetallides were obtained by the decomposition of a Co- and Pt-containing double complex salt in a hydrogen atmosphere at ～400°C. As compared to their Pt and Co monometallic counterparts, the bimetallic catalysts are more active and allow the CO concentration in hydrogen-containing mixtures to be reduced from 1 to 10^?3 vol %. This effect is likely due to the formation of bimetallic particles of a Co-Pt solid solution on the support surface.