1 article(s) from Lakhdar, Sami
Second-order rate constants for reactions of electrophiles with nucleophiles.
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Mechanism of amine-catalyzed conjugate additions of nucleophiles [23-28].
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Kinetics of the reactions of the iminium ion 3a with the silylated ketene acetal 7a .
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Laser flash photolytic generation of iminium ions 3a.
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Correlations of the reactivities of the iminium ions 3a and 3b toward nucleophiles with the corresp...
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Comparison of the electrophilicities of cinnamaldehyde-derived iminium ions 3a–3i.
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Nucleophiles used in iminium activated reactions [35,42,44-52].
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Counterion effects in electrophilic reactions of iminium ions 3a-X (at 20 °C, silyl ketene acetal 7b...
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Comparison of calculated and experimental rate constants of electrophilic aromatic substitutions wi...
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Aza-Michael additions of the imidazoles 15 with the iminium ion 3a .
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Plots of log k2 for the reactions of enamides 17a–17e with the benzhydrylium ions 18a–d in CH3CN at...
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Comparison of the nucleophilicities of enamides 17 with those of several other C nucleophiles (solv...
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Experimental and calculated rate constants k2 for the reactions of 17b and 17g with 3a and 3b in th...
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Comparison between experimental and calculated (Equation 1) cyclopropanation rate constants .
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Electrostatic activation of iminium activated cyclopropanations with sulfur ylides.
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Sulfur ylides inhibit the formation of iminium ions.
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Enamine activation .
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Electrophilicity parameters E for classes of compounds that have been used as electrophilic substra...
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Quantification of the nucleophilic reactivities of the enamines 32a–e in acetonitrile (20 °C) ; a d...
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Proposed transition states for the stereogenic step in proline-catalyzed reactions.
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Kinetic evidence for the anchimeric assistance of the electrophilic attack by the carboxylate group....
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Differentiation of nucleophilicity and Lewis basicity (in acetonitrile at 20 °C): Rate (left) and e...
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NHCs 41, 42, and 43 are moderately active nucleophiles and exceptionally strong Lewis bases (methyl...
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Nucleophilic reactivities of the deoxy Breslow intermediates 45 in THF at 20 °C .
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Comparison of the proton affinities (PA, from ) of the diaminoethylenes 47a–c with the methyl catio...
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Berkessel’s synthesis of a Breslow intermediate (51, keto tautomer) from carbene 43 .
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Synthesis of O-methylated Breslow intermediates .
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Relative reactivities of deoxy- and O-methylated Breslow intermediates .
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Reactivity scales for electrophiles and nucleophiles relevant for organocatalytic reactions (refere...
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Beilstein J. Org. Chem. 2012, 8, 1458–1478, doi:10.3762/bjoc.8.166
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