CYCLOADDITIONS OF DIAZIRIDINONE [PDF]
Chemistry Letters, 1974 Abstract Di-tert-butyldiaziridinone underwent cycloadditions to diphenylketene and benzoyl isocyanate, and to benzonitrile in the presence of Lewis acid as a catalyst.
Toshio Agawa +4 more
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On the strong difference in reactivity of acyclic and cyclic diazodiketones with thioketones: experimental results and quantum-chemical interpretation [PDF]
, 2015 The 1,3-dipolar cycloaddition of acyclic 2-diazo-1,3-dicarbonyl compounds (DDC) and thioketones preferably occurs with Z,Econformers and leads to the formation of transient thiocarbonyl ylides in two stages.
Holleman +8 more
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Cycloaddition Reactions of Deoxyribosylpropynoates [PDF]
Synthetic Communications, 2014 Pure anomers of either α or β 3-(2-deoxyribofuranosyl)propynoates reacted with the tetramethylcyclobutadiene–aluminum trichloride complex to yield the corresponding diastereoisomeric Dewar benzenes. Thermal- or ultraviolet light–initiated rearrangement gave rise to highly substituted C-aryldeoxyribosides as single anomers. The same compounds as well as
Ivana Císarˇová +4 more
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Discovery of new mutually orthogonal bioorthogonal cycloaddition pairs through computational screening. [PDF]
, 2015 Density functional theory (DFT) calculations and experiments in tandem led to discoveries of new reactivities and selectivities involving bioorthogonal sydnone cycloadditions.
Houk, KN +3 more
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Cycloaddition of Azosulfones and Sulfonylimines [PDF]
Angewandte Chemie International Edition in English, 1966 -
Effenberger, Franz, Maier, Roland
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Intramolecular Imino Diels-Alder Reaction: Progress toward the Synthesis of Uncialamycin [PDF]
, 2009 We herein described an intramolecular imino Diels-Alder reaction promoted with BF3.OEt2/DDQ affording substituted quinolines. Using this procedure, we prepared the chiral quitioline moiety of the uncialamycin, a new enediyne natural ...
Desrat, S, van de Weghe, P
core +1 more source
Molecules, 2021 Short and efficient syntheses of functionalized (pyrrolidin-2-yl)phosphonate and (5-oxopyrrolidin-2-yl)phosphonate have been developed. The synthetic strategy involved the diastereospecific 1,3-dipolar cycloaddition of N-benzyl-C-(diethoxyphosphoryl ...
Iwona E. Głowacka +3 more
doaj +1 more source
Stereodivergent, Diels-Alder-initiated organocascades employing α,β-unsaturated acylammonium salts: scope, mechanism, and application. [PDF]
, 2017 Chiral α,β-unsaturated acylammonium salts are novel dienophiles enabling enantioselective Diels-Alder-lactonization (DAL) organocascades leading to cis- and trans-fused, bicyclic γ- and δ-lactones from readily prepared dienes, commodity acid chlorides ...
Abbasov, Mikail E +3 more
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An overview of the cycloaddition chemistry of fulvenes and emerging applications
Beilstein Journal of Organic Chemistry, 2019 The unusual electronic properties and unique reactivity of fulvenes have interested researchers for over a century. The propensity to form dipolar structures at relatively low temperatures and to participate as various components in cycloaddition ...
Ellen Swan +2 more
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Cycloadditions to 1,1‐Dicyclopropylethylene [PDF]
Angewandte Chemie International Edition in English, 1969 While the stabilization of cationic centers by alpha cyclopropyl groups has been verified in many instances [2,31, to the best of our knowledge nothing is known about the influenceof cyclopropyl groups, as substituents, on the reaction mechanism of multiple bonds. The α-cyclopropylcarbonium ions 141 that may be formed are capable of rearrangement, thus
Effenberger, Franz, Podszun, Wolfgang
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