Results 101 to 110 of about 28,372 (298)
Enantioselective Assembly of Congested Cyclopropanes using Redox-Active Aryldiazoacetates
ACS Catalysis, 2019 The enantioselective assembly of quaternary stereocenters through sequential functionalization of versatile carbon-atom precursors has the potential to systematize the synthesis of these ubiquitous stereogenic elements.
Zhu Yu, A. Mendoza
semanticscholar +1 more source
A unique Pd-catalysed Heck arylation as a remote trigger for cyclopropane selective ring-opening
Nature Communications, 2017 Functionalizing multiple, distant sites across a molecule is a challenge. Here the authors report a remote functionalization strategy, whereby an initial Heck reaction leads to chain-walking of palladium across a molecule, ring-opening cyclopropanes ...
Sukhdev Singh +3 more
doaj +1 more source
Synthesis and reactivity of α-lithio α-trimethylsilyl cyclopropanes and related derivatives
, 1981 α-lithio α-trimethylsilyl cyclopropanes have been prepared by two different routes. They have been tested as precursors of alkylidene cyclopropanes, cyclopropylidienes and α-silyl α-vinyl ...
Halazy, S., Krief, A., Dumont, W.
core
Synthesis of Aminocyclopropanes by Redox‐Neutral Aminoalkylation
Angewandte Chemie International Edition, EarlyView.Aminocyclopropane synthesis by hydroaminoalkylation utilizing cheap, readily available starting materials is presented, offering orthogonality to commonly used methods and allowing broad functional‐group tolerance. Solvent‐mediated conditions enable the reaction of a pre‐formed hemiaminal with alkenes and alkynes.
Gwyndaf A. Oliver +6 more
wiley +1 more source
Nature Communications, 2016 Furans are attractive staring materials in organic chemistry, due to the ease of functionalisation and sourcing from renewable feedstocks. Here the authors show the ring opening of furans to silane intermediates, followed by further conversion to ...
Chinmoy K. Hazra +3 more
doaj +1 more source
Asymmetric one-pot synthesis of cyclopropanes
Macedonian Journal of Chemistry and Chemical Engineering, 2016 Cycloaddition of the diazoalkanes to electron-deficient olefins (in situ) affords polysubstituted cyclopropanes in high yields (up to 85%). Deprotection of the ketal protecting group provided water-soluble cyclopropane-bearing carbohydrate in good yields.
Naoufel Ben Hamadi +2 more
doaj +1 more source
PET-oxidative reactions of siloxy-cyclopropanes
, 1998 Rinderhagen H, Mattay J. PET-oxidative reactions of siloxy-cyclopropanes. JOURNAL OF INFORMATION RECORDING. 1998;24(3-4):261-264.The oxidative reaction of 1-trimethysiloxy-cyclopropanes has been investigated under PET conditions.
Mattay, Jochen, Rinderhagen, H
core
Ring opening of alkyl-substituted cyclopropanes in the presence of hydrogen on copper
, 1987 In the presence of hydrogen on copper, the cyclopropanes (l)(2,1 , and (3)a re transformed into saturated hydrocarbons containing the same number of carbon atoms (alkenes are also formed, through isomerization of the cyclopropanes); these studies reveal ...
Pálinkó, István +5 more
core +1 more source
Iodine-catalyzed diazo activation to access radical reactivity
Nature Communications, 2018 Radical reactivity of diazo compounds, useful organic building blocks, is yet underexplored. Here, the authors report an iodine-catalyzed radical activation of diazo compounds affording a variety of substituted cyclopropanes, pyrroles and epoxides under ...
Pan Li +5 more
doaj +1 more source
Expanding the Scope of Indium in Frustrated Lewis Pair Chemistry
Chemistry – A European Journal, EarlyView.All good things come in threes: The pyridine‐“protected” FLP tBu2InCH2PtBu2·Py shows three different kinds of reactivity: Besides “typical” FLP activity, it prefers formation of the “soft” isomers for substrates with multiple sites for FLP attack, but reacts with SO2 as a “masked” In/C FLP by insertion into the In─C bond.
Daniel N. Heuer +5 more
wiley +1 more source