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Showing 1 to 9 of 9 for “"Beckmann rearrangement"”.
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Studies on the Beckmann Rearrangement of 3beta-Acetoxycholest-5-En-7-One Oxime: Synthesis Of 3beta-Acetoxy-7a-AZA-B-Homocholest-5-En-7-One
… a-acetoxy-7a-aza-B-homocholest-S-en-7-one via the Beckmann rearrangement of 3beta-acetoxycho-lest-5-en-7-one oxime.
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Studies of Some Catalytic Properties of Zeolites
… zeolites as catalysts for the vapour phase Beckmann rearrangement of alicyclic oximes has been investigated, particularly for the conversion of cyclopentanone oxime to 2-piperidone. The rearrangements of cyclopentanone oxime and cyclohexanone oxime were studied spectroscopically, and the …
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The Beckmann and Schmidt rearrangements as an approach to the synthesis of diazabiphenylenes
… its transformation products are described. The Beckmann rearrangement of the mixture of dioximes derived from the diketone, also gave a mixture of two dilactams; the major component was established as cis, trans, cis-4,10-diazatricyclo [6,4,0,0 2,7] dodecane-3,9-dione on the basis of its …
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The Rich Chemistry of Cyclotriveratrylene (CTV) And CT-Inspired Reactions: Anthracenes with Organic Light-Emitting Diode (OLED) Applications and the Discovery of Cascade Reactions
… a dual reaction sequence involving a</p><p>Beckmann rearrangement followed by an electrophilic aromatic addition, two classic reactions that have never been seen combined into a powerful tandem sequence, enabling the direct construction of ketones, imines, or amines simply through varying …
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Development of Highly Reactive Sulfone Iminium Fluoride Reagents and Their Application in Fluorine Methodologies
… third part of this work, we explore a modified Beckmann rearrangement using SIFs. We find that the reaction of a range of ketoximes with SIF rapidly produces imidoyl fluorides in 60 seconds. These fluorinated molecules have low stability but serve as useful ii i precursors for the synthesis of …
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The syntheses of some naturally derived naphthoquinones
… formation, mild acetylation, oxime formation and Beckmann rearrangement in five steps with an overall yield of 22% is described in Chapter 1. The synthesis of the naturally occurring naphthoquinone derivative, possessing anti tumour and antiprotozoal properties, bikaverin is described in Chapter …
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Approaches to the synthesis of diazabiphenylenes
… A limited investigation was conducted into the Beckmann rearrangement of the dioxime(s) of this diketone and polyphosphoric acid then used as a catalyst to give the expected cis,trans,cis-4,10-diazatricyclo[6,4,0,0 2,7]- dodecane-3,9-dione as the major product. The Schmidt reaction of the …
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Improving the stability of an oxime based electrochemical microsensor for organo-phosphate vapor detection
… to produce cyanide, as well as a nitrogen atom rearrangement similar to Beckmann rearrangement. The stability of the oxime in organic solvents is most likely due to the lack of water, and specifically hydroxide ions. The reaction between oxime and organo-phosphate to produce cyanide ions …
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ΜΕΛΕΤΗ ΤΗΣ ΣΤΑΘΕΡΟΤΗΤΑΣ ΚΑΙ ΥΠΟΛΕΙΜΜΑΤΙΚΟΤΗΤΑΣ ΤΟΥ ΝΕΟΥ ΕΝΤΟΜΟΚΤΟΝΟΥ "ΔΙΑΙΘΥΛΟΦΩΣΦΟΡΙΚΟΣ ΕΣΤΕΡΑΣ ΤΗΣ ΔΙΚΥΚΛΟΠΡΟΠΥΛΟΚΕΤΟΞΙΜΗΣ"
… MAINLY TAKE PLACE THROUGH AN INTRAMOLECULAR BECKMANN- TYPE REARRANGEMENT AND OTHER ORGANOPHOSPHOROUS PEPTIDES. IN THIS RESEARCH METHOD WERE DEVELOPED FOR THE ISOLATION OF PEPTICIDE RESIDUES FROM PLANT PRODUCTS AND FOR THE OPTIMIZATION OF HPLC SYSTEMS (NORMAL ADREVERSE PHASE). FOR THE …