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Showing 1 to 14 of 14 for “"aryl ketones"”.
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The Displacement of Methoxyl Groups in Hindered Aryl Ketones and Anils Bythe Action of Grignard Reagents
Made available in DSpace on 2014-12-05T19:36:27Z (GMT). No. of bitstreams: 1 0018184.pdf: 3377268 bytes, checksum: 270bf289aca395c2a1bc9adb52bf3739 (MD5) Previous issue date: 1956
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A New Ortho Alkylation Procedure via the 1-Aza-1'-Oxa-(3,3)-Sigmatropic Rearrangement of N,0-Diacyl -N-Arylhydroxylamines: Synthesis of Ortho-(n-Acylamino) Aryl Ketones, Esters and Amides
Made available in DSpace on 2014-12-13T20:10:06Z (GMT). No. of bitstreams: 1 7726745.pdf: 4337017 bytes, checksum: 199232da15b2af0a7d592c560db677c7 (MD5) Previous issue date: 1977
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Preparation and reactions of some organic derivatives of manganese carbonyl compounds
New orthomanganated aryl ketones of type 1 (Figure 1) have been prepared, including some in which the donor ketone carbonyl group is incorporated into a fused ring. Analogous derivatives of benzoates and heteroaromatic carboxylic acid esters are also described, together with several orthorheniated …
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Enantioselective synthesis using bromoacetals.
… preparation of racemic and enantiomerically pure arylpropanoic acids is briefly reviewed by reference to some of the more important synthons. Some of the more general procedures that have been developed for the construction of arylpropanoic acids are discussed. The preparation of substituted alkyl …
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The Reaction Kinetics of Neutral Free Radicals and Radical Ions Studied by Laser Flash Photolysis
… the properties of radical anions, generated from aryl ketones, were investigated. These radical anions, such as t-butyl phenyl ketone and cyclopropyl phenyl ketone, measured to have decay rate constants of 1.0 x 106 s-1, although they are known to be persistent when studied electrochemically. They …
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Organomanganese compounds in organic synthesis
… of some cyclomanganated chalcones, dienones and aryl ketones. Investigation has previously been undertaken into the reaction of cyclomanganated chalcones and dienones with alkynes to give both pyranyl and cycloheptadienyl Mn(CO)₃ complexes. In the current study, the reaction was further …
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Generating structural diversity in \(\alpha\)[alpha],\(\alpha\)[alpha]-difluoromethyl ketones
… the synthesis of \(\alpha\),\(\alpha\)-difluoroketones contained within a diverse array of molecular motifs. 1-(\(N\),\(N\)-Diethylcarbamoyloxy)-2,2-difluoro-1-(tributylstannyl)ethene undergoes Stille cross coupling with a variety of aryl, heteroaryl, vinyl and allyl organic electrophiles. …
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Silica mesocellular foam and carbon nanofoam for fine chemical synthesis and separation
… good separation ability for a mixture of aryl ketones. By relating chromatographic performance to S-MCF surface silanol chemistry, an improved S-MCF chromatographic support was realized, which rivaled the separation capability of a commercially available chromatographic support. The …
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Photochemical Methods for the Construction of C-C and C-X Bonds
… optimised and expanded to prepare a range of α-aryl ketones including drug derivatives. Furthermore, the application of flow reactors towards multi-gram scale-up was investigated and in doing so, a previously unreported method to recycle the iridium photocatalyst was established. Chapter 3 …
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The elucidation of single electron transfer (SET) mechanisms in the reactions of nucleophiles with carbonyl compounds
… similar to the reduction potentials observed for aryl ketones and enones. LSV results for the reduction of <b>20</b> are consistent with the occurrence of substrate reduction followed by a subsequent chemical step (an EC mechanism). The broadness of the reduction wave and variation of peak …
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Reactions of cyclomanganated compounds
… ring. The organic ligands were derived from aryl and heteroaryl ketones, chalcones, dienones and azabutadienes. A preliminary investigation has previously been undertaken into the reaction of carbon disulfide with some orthomanganated aryl ketones. In the present study these reactions were …
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Design and modification of rhodium and iridium N-heterocyclic carbene complexes for asymmetric transfer hydrogenation and antimicrobial activity
… transfer hydrogenation (ATH) of prochiral ketones. Iridium(I) bis-NHC complexes were found to undergo oxidative addition with a variety of alpha-amino acids, generating chiral iridium(III) complexes of the form Ir(NHC)2(aa)(H)(X) (aa = amino acid, X = halide). The complexes were screened …
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The modification of brucine derivatives as chiral ligands and its application in the asymmetric synthesis
… Morita-Baylis-Hillman (MBH) reaction of alkyl/aryl ketones. Brucine <em>N</em>-oxide was used as a nucleophilic organic catalyst in the MBH reaction of alkyl vinyl ketone. In addition, asymmetric MBH reactions of alkyl vinyl ketones with aldehydes were investigated using a dual catalysis of …
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Revisiting aryl N-methylcarbamate acetylcholinesterase inhibitors as potential insecticides to combat the malaria-transmitting mosquito, Anopheles gambiae
… syntheses and pharmacology of species-selective aryl methylcarbamate acetylcholinesterase inhibitors to combat the malaria-transmitting mosquito, Anopheles gambiae. We identified six novel carbamates that demonstrated levels of target selectivity exceeding our project milestone of 100-fold. Among …