5449-68-3Relevant academic research and scientific papers
OXAZOLIDINONE COMPOUNDS AND DERIVATIVES THEREOF
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Paragraph 0452-0453, (2013/09/26)
Compounds of Formula (I) and Formula (II) are useful inhibitors of tankyrase. Compounds of Formula (I) and Formula (II) have the following structure: where the definitions of the variables are provided herein.
SYNTHETIS OF CYCLIC AND ACYCLIC β,γ-UNSATURATED CARBOXYLIC ACIDS VIA AN E1-TYPE IONIZATION/ELIMINATION OF β-LACTONES
Black, T. Howard,Eisenbeis, Shane A.,McDermott, Todd S.,Maluleka, Stephen L.
, p. 2307 - 2316 (2007/10/02)
Cyclic and acyclic ketones were converted in three steps into 3-alkenoic acids, bearing a variety of substituents in the α-position.The sequence, involving ionization/elimination of a β-lactone, affords high yields of pure products uncontaminated with conjugated isomers.Support for an E1-type mechanism is also provided.
AN EFFICIENT, HIGHLY REGIOSELECTIVE SYNTHESIS OF SUBSTITUTED (1-CYCLOHEXENYL) ACETIC ACID DERIVATIVES VIA IONIZATION/ELIMINATION OF β-LACTONES
Black, T. Howard,Maluleka, Stephen L.
, p. 531 - 534 (2007/10/02)
When treated with magnesium bromide, spiro β-lactones undergo an ionization/elimination reaction to afford cyclohexenyl acetic acid derivatives in high yield and isomeric purity.
Kinetics and Mechanism of the Ivanov Reaction: Reaction of Aldehydes and Ketones with Phenylacetic Acit Magnesium Enediolate
Toullec, Jean,Mladenova, Margarita,Gaudemar-Bardone, Francoise,Blagoev, Blagoi
, p. 2563 - 2569 (2007/10/02)
Stopped-flow kinetics of the reaction between aldehydes or ketones and the magnesium enediolate of phenylacetic acid in THF are second order at enediolate concentrations -3 M.At concentrations of 10-3 - 3*10-2 M, the formation of a bis(enediolate) requires a more complex kinetic equation.Second-order rate constans are reported for the reaction of the enediolate with a number of aldehydes and ketones at 25 deg C.Entropies of activation for cyclohexanone, benzaldehyde, 2-methylpropanal, and 2,2-dimethylpropanal are positive, and enthalpy-entropy compensation is observed.Ef fects of cycloalkanone ring size and benzaldehyde substituents are small and are ascribable to a transition state with a very small C-C bond order.A two-step mechanism is proposed, with preequilibrium formation of a coordination intermediate which, in some cases, is accompanied by a change in the magnesium coordination number.Effects of alkyl groups on aldehyde and ketone reactivity stem mainly from steric desolvation.
STRUCTURE DU REACTIF D'IVANOV ET DE QUELQUES ORGANOMETALLIQUES ISSUS DES DERIVES PHENYLACETIQUES-II. STEREOCHEMIE DE LA CONDENSATION AVEC LA t-BUTYL-4 CYCLOHEXANONE
Mladenova, M.,Blagoev, B.,Gaudemar, M.,Gaudemar-Bardone, F.,Lallemand, J. Y.
, p. 2157 - 2164 (2007/10/02)
Ivanov reagent and some other analogous reagents (phenyl acetique serie) have been condensed with t-Bu-4 cyclohexanone in order to complete investigation of the reactive species.In all the cases, equatorial attack is highly predominant; it let suppose tha
