Search Results - "Marek, Ilan"
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Asymmetric Preparation of Polysubstituted Cyclopropanes Based on Direct Functionalization of Achiral Three-Membered Carbocycles
Published in Chemical reviews (26-09-2018)“…In addition to the appealing synthetic transformations that cyclopropanes present, they are also part of larger molecular structures that possess a wide range…”
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Synthesis of Enantioenriched Vicinal Tertiary and Quaternary Carbon Stereogenic Centers within an Acyclic Chain
Published in Angewandte Chemie International Edition (02-01-2020)“…Overcoming the inherent difficulty to prepare quaternary carbon stereogenic centers, the diastereo‐ and enantioselective preparation of acyclic carbon…”
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3
Alkene Isomerization through Allylmetals as a Strategic Tool in Stereoselective Synthesis
Published in ACS catalysis (15-05-2020)“…The positional isomerization of alkenes is a well-known process mediated by various transition metal complexes. Nevertheless, systems which isomerize alkenes…”
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Nucleophilic Substitution at Quaternary Carbon Stereocenters
Published in Journal of the American Chemical Society (25-03-2020)“…Cyclopropyl carbinol derivatives undergo a regio- and stereoselective nucleophilic substitution at the quaternary carbon center, with pure inversion of…”
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Rhodium‐Catalyzed Arylation of Cyclopropenes Based on Asymmetric Direct Functionalization of Three‐Membered Carbocycles
Published in Angewandte Chemie International Edition (26-03-2018)“…A variety of highly diastereo‐ and enantiomerically enriched arylcyclopropanes is obtained through the asymmetric rhodium‐catalyzed arylation reaction of…”
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Stereospecific nucleophilic substitution at tertiary and quaternary stereocentres
Published in Chemical science (Cambridge) (28-07-2020)“…Nucleophilic substitution reactions have always been considered as one of the most powerful reactions for the creation of carbon-carbon or carbon-heteroatom…”
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Selectivity in Metal-Catalyzed CarbonCarbon Bond Cleavage of Alkylidenecyclopropanes
Published in Chemistry : a European journal (23-08-2010)“…When more complex system leads to simpler reactivity profile; the ring‐opening of strained three‐membered rings such as methylene‐ and alkylidenecyclopropanes…”
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A unique Pd-catalysed Heck arylation as a remote trigger for cyclopropane selective ring-opening
Published in Nature communications (07-02-2017)“…Combining functionalization at a distant position from a reactive site with the creation of several consecutive stereogenic centres, including the formation of…”
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Alkene Isomerization Revitalizes the Coates–Claisen Rearrangement
Published in Angewandte Chemie International Edition (16-08-2021)“…The [3,3]‐sigmatropic rearrangement of allylic vinyl acetals, first investigated by Coates nearly four decades ago, is set apart from other variants of the…”
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Merging C–H and C–C bond cleavage in organic synthesis
Published in Nature reviews. Chemistry (01-05-2017)“…Metal-catalysed functionalization of a carbon–hydrogen bond can occur selectively even in the presence of ostensibly more reactive functional groups. Such…”
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Carboxylate-Assisted Ruthenium(II)-Catalyzed Hydroarylations of Unactivated Alkenes through C-H Cleavage
Published in Angewandte Chemie International Edition (02-04-2013)“…Catalytic: Ruthenium(II)biscarboxylate complexes enabled highly effective hydroarylations of unactivated alkenes through CH bond activation. This method has a…”
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Walking Metals for Remote Functionalization
Published in ACS central science (28-02-2018)“…The distant and selective activation of unreactive C–H and C–C bonds remains one of the biggest challenges in organic chemistry. In recent years, the…”
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Stereoselective Access to Fully Substituted Aldehyde‐Derived Silyl Enol Ethers by Iridium‐Catalyzed Alkene Isomerization
Published in Angewandte Chemie International Edition (01-09-2020)“…An in situ generated cationic Ir‐catalyst isomerizes simple allylic silyl ethers into valuable, fully substituted aldehyde‐derived silyl enol ethers…”
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14
Asymmetric Copper-Catalyzed Carbozincation of Cyclopropenes en Route to the Formation of Diastereo- and Enantiomerically Enriched Polysubstituted Cyclopropanes
Published in Journal of the American Chemical Society (16-12-2015)“…The enantioselective synthesis of cyclopropylzinc reagents has been achieved via a copper-catalyzed carbozincation of 3,3-disubstituted cyclopropenes with…”
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15
Merging allylic carbon–hydrogen and selective carbon–carbon bond activation
Published in Nature (London) (09-01-2014)“…A method of selectively activating both allylic carbon–hydrogen bonds and carbon–carbon bonds can furnish sophisticated molecular scaffolds with all-carbon…”
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A Shift in Retrosynthetic Paradigm
Published in Chemistry : a European journal (28-08-2008)“…The current state‐of‐the‐art synthesis for the formation of enantiomerically enriched all‐carbon quaternary stereocenters in acyclic system relies on the…”
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Asymmetric Copper‐Catalyzed Carbomagnesiation of Cyclopropenes
Published in Angewandte Chemie International Edition (06-06-2017)“…The highly diastereo‐ and enantioselective formation of polysubstituted cyclopropanes was easily achieved through the asymmetric copper‐catalyzed…”
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Enantioselective Construction of Acyclic Quaternary Carbon Stereocenters: Palladium-Catalyzed Decarboxylative Allylic Alkylation of Fully Substituted Amide Enolates
Published in Journal of the American Chemical Society (19-07-2017)“…We report a divergent and modular protocol for the preparation of acyclic molecular frameworks containing newly created quaternary carbon stereocenters…”
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Remote functionalization through alkene isomerization
Published in Nature chemistry (19-02-2016)Get full text
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Highly E‑Selective, Stereoconvergent Nickel-Catalyzed Suzuki–Miyaura Cross-Coupling of Alkenyl Ethers
Published in Organic letters (19-04-2019)“…An improved method for the nickel-catalyzed Suzuki–Miyaura cross-coupling of alkenyl ethers is reported. This stereoconvergent protocol allows for the…”
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