(4+3)-Cycloaddition of Donor-Acceptor Cyclopropanes with Thiochalcones: A Diastereoselective Access to Tetrahydrothiepines [PDF]
, 2019 A general approach is described for the formation of tetrahydrothiepines using donor-acceptor cyclopropanes. Thiochalcones, functioning as sulfur-containing four-atom building blocks, were reacted in a Lewis-acid-catalyzed formal (4+3)-cycloaddition ...
André U., Augustin +4 more
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Lewis acid-catalyzed cycloaddition reactions of donor-acceptor cyclopropanes
, 2019 The one-step diastereoselective synthesis of cis-2,5-disubstituted tetrahydrofurans via Lewis acid-catalyzed [3 + 2] cycloadditions of donor-acceptor (D-A) cyclopropanes and aldehydes is described.
Shanina D. Sanders
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Halogenated Donor–Acceptor Cyclopropanes as Donor–Acceptor Cyclopropene Surrogates [PDF]
Herein we report (3+2)-cycloaddition reactions of halogenated donor–acceptor cyclopropanes (HDACs) as surrogates for donor–acceptor cyclopropenes.
Gwyndaf A. Oliver +3 more
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Synthetic Applications and Methodological Developments of Donor-Acceptor Cyclopropanes and Related Compounds. [PDF]
Isr J Chem, 2016 Donor-acceptor cyclopropanes are convenient precursors to reactive and versatile 1,3-dipoles, and have found application in the synthesis of a variety of carbo- and heterocyclic scaffolds.
O'Connor NR, Wood JL, Stoltz BM.
europepmc +2 more sources
Polarity inversion of donor-acceptor cyclopropanes: disubstituted δ-lactones via enantioselective iridium catalysis. [PDF]
J Am Chem Soc, 2011 The coupling of carbonyl electrophiles at the donor position of donor-acceptor cyclopropanes is described, representing an inversion of polarity with respect to conventional reactivity modes displayed by these reagents.
Moran J +4 more
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Synthesis of (Het)aryl 2-(2-hydroxyaryl)cyclopropyl Ketones
Molecules, 2020 A simple general method for the synthesis of 1-acyl-2-(ortho-hydroxyaryl)cyclopropanes, which belong to the donor–acceptor cyclopropane family, has been developed.
Alexander A. Fadeev +6 more
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Synthesis of 2-[2-(Ethoxymethoxy)phenyl]spiro[cyclopropane-1,2′-indene]-1′,3′-dione
Molbank, 2023 An 1,3-indanedione-derived donor–acceptor cyclopropane, bearing the ethoxymethyl-protected phenolic group at the ortho-position of the donor aryl substituent, has been synthesized using a reaction sequence involving the Knoevenagel condensation of 1,3 ...
Olga A. Ivanova +6 more
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(3+3)‐Annulation of Carbonyl Ylides with Donor–Acceptor Cyclopropanes: Synergistic Dirhodium(II) and Lewis Acid Catalysis [PDF]
, 2019 The first (3+3)-annulation process of donor-acceptor cyclopropanes using synergistic catalysis is reported. The Rh2 (OAc)4 -catalyzed decomposition of diazo carbonyl compounds generated carbonyl ylides in situ. These 1,3-dipoles were converted with donor-
Martin Petzold +2 more
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Frontiers in Chemistry, 2020 A chemo- and diastereo-selective (3 + 2) cycloaddition reacition between Donor-Acceptor (D-A) cyclopropanes and α,β-unsaturated enamides is developed for efficient access to spiro(cyclopentane-1,3'-indoline) derivatives.
Xun Zhu +5 more
doaj +1 more source
Lewis Acid Catalyzed Dual Strain-Release Platform for Transforming Azabicyclo[1.1.0]butanes into Functionalized Azetidines with Donor-Acceptor(D-A) Cyclopropanes and Bicyclo[1.1.0]butanes. [PDF]
Org LettHazra S +6 more
europepmc +3 more sources