Results 111 to 120 of about 21,746 (290)
Determining the Relative Configuration of Propargyl Cyclopropanes by Co-Crystallization [PDF]
, 2020 Clemens Richert +4 more
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Synthesis of Nitrogen Heterocycles via Directed Carbonylative C–C Bond Activation of Cyclopropanes
CHIMIA, 2018 This review concentrates on recent developments from our laboratory concerning the Rh-catalyzed carbonylative C–C bond activation of cyclopropanes.
Andrew G. Dalling, John F. Bower
doaj +1 more source
Stereoselective synthesis of tetrahydroindolizines via catalytic formation of pyridinium ylides from diazo compounds [PDF]
, 2016 Commercially available iron (III) and copper (I) complexes catalyze new multicomponent cycloadditions between diazo compounds, pyridines and electrophilic alkenes to give alkaloid-inspired tetrahydroindolizidines in high yields and diastereoselectivities.
Aggarwal +29 more
core +1 more source
Thiophene Derivatives as Versatile Precursors for (Hetero)Arene and Natural Product Synthesis
Angewandte Chemie International Edition, Volume 65, Issue 5, 28 January 2026.Hidden but Powerful: Thiophenes and their saturated analogues have been demonstrated to be versatile C4‐building blocks that can be rapidly applied to natural product synthesis and the construction of functionalized (hetero)arenes. This minireview aims to provide a concise overview of the strategies and implementations of these sulfur‐containing ...
Anna Keimer, Franz‐Lucas Haut
wiley +1 more source
Umsetzungen von Cyclopropyl-Li-carbenoiden mit Cyclopentenon
CHIMIA, 1981 The versatility of the addition of Lithium-cyclopropyl-carbenoids to cyclopentenone has been tested with respect to the attempted synthesis of 5,6-dihydro-calicenes (= 1-cyclopropylidene-cyclopentadienes).
Gabriele Sabbioni +3 more
doaj +1 more source
European Journal of Organic Chemistry, Volume 29, Issue 4, January 26, 2026.Togni reagent I, one of the most used electrophilic trifluoromethylating reagents, has been radiolabeled with fluorine‐18 starting from the widely available fluoro‐benziodoxole and the [18F]Ruppert–Prakash reagent. To demonstrate the broad potential for late‐stage functionalization, aliphatic carboxylic acids were successfully converted into their 18F ...
Lizeth Y. F. Haveman +2 more
wiley +1 more source
Nickel(II)-Catalyzed Formal [3+2] Cycloadditions between Indoles and Donor–Acceptor Cyclopropanes
MoleculesThis article describes the development of a nickel-catalyzed regio- and diastereoselective formal [3+2] cycloaddition between N-substituted indoles and donor–acceptor cyclopropanes to synthesize cyclopenta[b]indoles. Optimized reaction conditions provide
Víctor Quezada +9 more
doaj +1 more source
Synergistic catalysis: cis-cyclopropanation of benzoxazoles
, 2016 In the present paper we report our latest efforts in pushing the boundaries of Synergistic Catalysis. We propose the use of 3 different catalytic cycles working in concert for the formation of cis cyclopropane derivatives of benzoxazoles with excellent ...
Light, Mark +3 more
core +1 more source
THE ACID-BASE BALANCE DURING CYCLOPROPANE ANESTHESIA [PDF]
, 1942 R. T. Stormont +3 more
openalex +1 more source