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Showing 1 to 20 of 86 for “"Addition reactions"”.
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Organocatalytic conjugate addition reactions
… efficient catalyst for base catalyzed conjugate addition between 2(3H)-furanones and maleimides. Aromatic furanones substrates proved to be better than alkyl furanones, giving higher yields and better ees. The best result is a decent ee of 70%. There is still room for improvements in increasing …
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Addition Reactions or Diethyl 2,4-dicyanoglutaconate
… brought about by a base-catalyzed, nucleophilic addition. The purpose of this work is to investigate and to evaluate the applicability of the readily-available diethyl 2,4-dicyanoglutaconate in a similar type of reaction. Such a reaction, if feasible, would permit the introduction of a …
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Novel addition reactions of some benzopyrans
… to 4-oxochroman-3-carbonitriles by a sequence of reactions which involved the preparation of 3-hydroxymethylenechroman-4-ones, their reaction with hydroxylamine to give benzopyrano[3,4-d]isoxazoles and base catalysed ring opening of the isoxazoles. The reaction of 2-isopropylchroman-4-one with …
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Exploring Nickel Catalysis in Carbonyl and Alcohol Addition Reactions
The nucleophilic addition of organomagnesium/lithium reagents to aldehydes and ketones has long enabled the synthesis of valuable alcohol derivatives; however, these types of transformations are often plagued by poor functional group tolerance and require harsh reaction conditions. The direct …
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Lewis Base-Catalyzed Enantioselective Allylation and Aldol Addition Reactions
Embargo set by: Seth Robbins for item 85720 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs
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Intermediates and Mechanisms of Gold(I)-Catalyzed Nucleophilic Addition Reactions
… alkynes and allenes to initiate nucleophilic addition reactions. As the key intermediates in these reactions, there has been recent interest in the synthesis and study of cationic, two-coordinate gold pi-hydrocarbon complexes. However, few experimental studies have been focused on gold …
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Synthetic and mechanistic investigations of the aldehyde addition reactions of tartrate ester modified allylboronates
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1989.
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Thermochemistry and kinetics: hydrogen atom addition reactions with alkenes, oxidation of cyclopentadienone, trifluoroethene and transport properties
… calculation of fluid dynamics of gas phase flow reactions and mixing needed for evaluation in the combustion and thermal (flow) fluid dynamic modeling. Transport properties of radicals cannot be measured so computational chemistry is method of choice. The dissertation determine dipole moment, …
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Synthesis and Characterization of Ruthenium (II) Complexes and their Applications to Atom Transfer Radical Addition Reactions
… or PMe3 have been synthesized by li<and e>chan<e reactions ,ith Cp#Ru(PPh3)2Cl, and characterized by multinuclear NMR spectroscopy and X-ray crystallography. We have explored the efficiency of these complexes as catalysts for the atom transfer radical addition (ATRA) of various chloro-substrates …
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