Search Results - "Constantin, G."

Lewis Acid Catalyzed Formal (3+2)‐Cycloaddition of Bicyclo[1.1.0]butanes with Ketenes by Radhoff, Niklas, Daniliuc, Constantin G., Studer, Armido

“…Design, synthesis and application of benzene bioisosteres have attracted a lot of attention in the past 20 years. Recently, bicyclo[2.1.1]hexanes have emerged…”
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Cooperative NHC/Photoredox Catalyzed Ring‐Opening of Aryl Cyclopropanes to 1‐Aroyloxylated‐3‐Acylated Alkanes by Zuo, Zhijun, Daniliuc, Constantin G., Studer, Armido

“…Cyclopropanes are an important class of building blocks in organic synthesis. Herein, a ring‐opening/arylcarboxylation/acylation cascade reaction for the…”
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Highly Enantioselective [5 + 2] Annulations through Cooperative N‑Heterocyclic Carbene (NHC) Organocatalysis and Palladium Catalysis by Singha, Santanu, Patra, Tuhin, Daniliuc, Constantin G, Glorius, Frank

“…The highly enantioselective [5 + 2] annulation of enals with vinylethylene carbonates through a cooperative N-heterocyclic carbene (NHC)/Pd catalytic system is…”
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Lewis Acid Catalyzed Stereoselective Dearomative Coupling of Indolylboron Ate Complexes with Donor–Acceptor Cyclopropanes and Alkyl Halides by Das, Saikat, Daniliuc, Constantin G., Studer, Armido

“…Indolylboron ate complexes readily generated from 2‐lithioindoles and boronic esters underwent multicomponent dearomative coupling with D‐A cyclopropanes and…”
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Catalytic Formal [2π+2σ] Cycloaddition of Aldehydes with Bicyclobutanes: Expedient Access to Polysubstituted 2‐Oxabicyclo[2.1.1]hexanes by Liang, Yujie, Paulus, Fritz, Daniliuc, Constantin G., Glorius, Frank

“…Synthesis of bicyclic scaffolds has attracted tremendous attention because they are playing an important role as saturated bioisosteres of benzenoids in modern…”
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Stereospecific 1,3‐Aminobromination of Donor–Acceptor Cyclopropanes by Das, Saikat, Daniliuc, Constantin G., Studer, Armido

“…Sn(OTf)2‐catalyzed 1,3‐aminobromination of donor–acceptor cyclopropanes with various sulfonyl amides or electron‐poor anilines and N‐bromosuccinimide is…”
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Aroyl Fluorides as Bifunctional Reagents for Dearomatizing Fluoroaroylation of Benzofurans by Yu, Xiaoye, Meng, Qing-Yuan, Daniliuc, Constantin G, Studer, Armido

“…The 2,3-dihydrobenzofuran scaffold is widely found in natural products and biologically active compounds. Herein, dearomatizing 2,3-fluoroaroylation of…”
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1,1,2‐Trifunctionalization of Terminal Alkynes by Radical Addition–Translocation–Cyclization–Trapping for the Construction of Highly Substituted Cyclopentanes by Yang, Youqing, Daniliuc, Constantin G., Studer, Armido

“…Radical 1,1,2‐trifunctionalization of terminal alkynes by an addition–translocation–cyclization–trapping sequence using readily available alkynyl triflones as…”
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Conjugate Umpolung of β,β-Disubstituted Enals by Dual Catalysis with an N-Heterocyclic Carbene and a Brønsted Acid: Facile Construction of Contiguous Quaternary Stereocenters by Li, Jun-Long, Sahoo, Basudev, Daniliuc, Constantin-G., Glorius, Frank

“…A sterically hindered homoenolate has been generated by the NHC‐catalyzed conjugate umpolung of β,β‐disubstituted enals and successfully employed in a facile…”
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Synthesis of Polysubstituted 2‑Oxabicyclo[2.1.1]hexanes via Visible-Light-Induced Energy Transfer by Liang, Yujie, Kleinmans, Roman, Daniliuc, Constantin G., Glorius, Frank

“…Synthesis of bicyclic scaffolds has attracted growing interest because they are of high importance in modern pharmaceutical development. Here we report a…”
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Unnatural Amino Acid Synthesis Enabled by the Regioselective Cobalt(III)-Catalyzed Intermolecular Carboamination of Alkenes by Lerchen, Andreas, Knecht, Tobias, Daniliuc, Constantin G., Glorius, Frank

“…Herein, we report an unprecedented regioselective and entirely atom‐economic cobalt(III)‐catalyzed method for the non‐annulative, intermolecular carboamination…”
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Boron-enabled geometric isomerization of alkenes via selective energy-transfer catalysis by Molloy, John J., Schäfer, Michael, Wienhold, Max, Morack, Tobias, Daniliuc, Constantin G., Gilmour, Ryan

“…An E-Z boron swivel Compounds with carbon-carbon double bonds can form two distinct isomers, depending on whether the heaviest substituents on both carbons lie…”
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Cooperative N‑Heterocyclic Carbene/Palladium-Catalyzed Enantioselective Umpolung Annulations by Guo, Chang, Fleige, Mirco, Janssen-Müller, Daniel, Daniliuc, Constantin G, Glorius, Frank

“…A combination of NHC organocatalysis and transition-metal catalysis gives rise to fundamentally new cooperative reactivity and enables the regio- and…”
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Oxidative N‐Heterocyclic Carbene Catalyzed Dearomatization of Indoles to Spirocyclic Indolenines with a Quaternary Carbon Stereocenter by Bera, Srikrishna, Daniliuc, Constantin G., Studer, Armido

“…An efficient method for the asymmetric intramolecular dearomatization of indoles by using oxidative N‐heterocyclic carbene catalysis is demonstrated. Valuable…”
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N‑Aminopyridinium Salts as Precursors for N‑Centered Radicals – Direct Amidation of Arenes and Heteroarenes by Greulich, Tobias W, Daniliuc, Constantin G, Studer, Armido

“…Readily prepared N-aminopyridinium salts are valuable precursors for the generation of N-centered radicals. Reduction of these salts by single electron…”
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Intermolecular [2π+2σ]-photocycloaddition enabled by triplet energy transfer by Kleinmans, Roman, Pinkert, Tobias, Dutta, Subhabrata, Paulisch, Tiffany O., Keum, Hyeyun, Daniliuc, Constantin G., Glorius, Frank

“…For more than one century, photochemical [2+2]-cycloadditions have been used by synthetic chemists to make cyclobutanes, four-membered carbon-based rings. In…”
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Silver‐Enabled Cycloaddition of Bicyclobutanes with Isocyanides for the Synthesis of Polysubstituted 3‐Azabicyclo[3.1.1]heptanes by Liang, Yujie, Nematswerani, Ronewa, Daniliuc, Constantin G., Glorius, Frank

“…Synthesis of bicyclic scaffolds has emerged as an important research topic in modern drug development because they can serve as saturated bioisosters to…”
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Synthesis of All‐Carbon Quaternary Centers by Palladium‐Catalyzed Olefin Dicarbofunctionalization by Koy, Maximilian, Bellotti, Peter, Katzenburg, Felix, Daniliuc, Constantin G., Glorius, Frank

“…The redox‐neutral dicarbofunctionalization of tri‐ and tetrasubstituted olefins to form a variety of (hetero)cyclic compounds under photoinduced palladium…”
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Mechanistic Studies on a Cooperative NHC Organocatalysis/Palladium Catalysis System: Uncovering Significant Lessons for Mixed Chiral Pd(NHC)(PR3) Catalyst Design by Guo, Chang, Janssen-Müller, Daniel, Fleige, Mirco, Lerchen, Andreas, Daniliuc, Constantin G, Glorius, Frank

“…A comprehensive investigation of the mechanism of the highly enantioselective Pd­(PPh3)4/NHC-catalyzed annulation of vinyl benzoxazinanones and enals has been…”
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Radical 1‐Fluorosulfonyl‐2‐alkynylation of Unactivated Alkenes by Frye, Nils Lennart, Daniliuc, Constantin G., Studer, Armido

“…Sulfonyl fluorides have found widespread use in chemical biology and drug discovery. The development of synthetic methods for the introduction of the sulfonyl…”
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