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Structure and functional mapping of the KRAB‐KAP1 repressor complex
Transposable elements are a genetic reservoir from which new genes and regulatory elements can emerge. However, expression of transposable elements can be pathogenic and is therefore tightly controlled. KRAB domain‐containing...
Regioselective Transition-Metal-Catalyzed C–H Functionalization of Anilines
Anilines are a vital synthetic core of pharmaceuticals, agrochemicals, natural products and building blocks. Metal-catalyzed C–H functionalization has emerged as a powerful tool to derivatize biologically relevant molecules....
Regioselective Transition-Metal-Catalyzed C–H Functionalization of Anilines
Anilines are a vital synthetic core of pharmaceuticals, agrochemicals, natural products and building blocks. Metal-catalyzed C–H functionalization has emerged as a powerful tool to derivatize biologically relevant molecules....
Ruthenium(II)-Catalyzed C–H Functionalization Using the Oxazolidinone Heterocycle as a Weakly Coordinating Directing Group
Jamie A. Leitch, Philippe B. Wilson, Claire L. McMullin, Mary F. Mahon, Yunas Bhonoah, Ian H. Williams, Christopher G. Frost
Jul 27, 2016
Herein, we report the ruthenium-catalyzed ortho C–H alkenylation of a wide range of N-aryloxazolidinone scaffolds. Alkenylation was achieved with complete monoselectivity with a scope of 27 examples in 2-MeTHF. Yields ranged...
Ruthenium(II)-Catalyzed C–H Functionalization Using the Oxazolidinone Heterocycle as a Weakly Coordinating Directing Group
Jamie A. Leitch, Philippe B. Wilson, Claire L. McMullin, Mary F. Mahon, Yunas Bhonoah, Ian H. Williams, Christopher G. Frost
Jul 27, 2016
Herein, we report the ruthenium-catalyzed ortho C–H alkenylation of a wide range of N-aryloxazolidinone scaffolds. Alkenylation was achieved with complete monoselectivity with a scope of 27 examples in 2-MeTHF. Yields ranged...
Multidrug resistant enteric fever in South Asia
Christopher M Parry, Isabela Ribeiro, Kamini Walia, Priscilla Rupali, Stephen Baker, Buddha Basnyat
Apr 10, 2019
Investments in newer diagnostics and antimicrobial treatments are critical to improve management of enteric fever in South Asia, say Christopher Parry and colleagues
Cooperative assembly of H-bonded rosettes inside a porphyrin nanoring.
The melamine·barbiturate H-bonded rosette motif is of comparable dimensions and symmetry to the cavity of a butadiyne-linked 6-porphyrin nanoring. Functionalisation of each of the barbiturate components and the pyrimidine...
Published by: Chemical science
Interview with W. H. Winborne
W. H. Winborne
Jan 01, 0001
In his July 1984 interview with Michael Cooke, W. H. Winborne described his work with the Orangeburg Area Sickle Cell Anemia Foundation, the Family Health Center, and the outreach programs related to the foundation. Winborne...
sickle cell anemia Orangeburg Area Sickle Cell Anemia Foundation Family Health Center (previously Orangeburg County Consumer Health Council) Seventh Day Adventist DHEC (Department of Health and Environmental Control) outreach programs Oral History
Published by: Winthrop University
Modes of activation of organometallic iridium complexes for catalytic water and C–H oxidation
Andrew J. Ingram, Arron B. Wolk, Cornelia Flender, Jialing Zhang, Christopher J. Johnson, Ulrich Hintermair, Robert H. Crabtree, Mark A. Johnson, Richard N. Zare
Jan 06, 2014
Sodium periodate (NaIO4) is added to Cp*IrIII (Cp* = C5Me5–) or (cod)IrI (cod = cyclooctadiene) complexes, which are water and C–H oxidation catalyst precursors, and the resulting aqueous reaction is investigated from...
Beyond C2 and C3
The indole scaffold will continue to play a vital part in the future of drug discovery and agrochemical development. Because of this, the necessity for elegant techniques to enable selective C–H functionalization is vast. Early...
Beyond C2 and C3
The indole scaffold will continue to play a vital part in the future of drug discovery and agrochemical development. Because of this, the necessity for elegant techniques to enable selective C–H functionalization is vast. Early...
Ruthenium-Catalyzed para-Selective C−H Alkylation of Aniline Derivatives
Jamie A. Leitch, Claire L. McMullin, Andrew J. Paterson, Mary F. Mahon, Yunas Bhonoah, Christopher G. Frost
Nov 20, 2017
The para-selective C−H alkylation of aniline derivatives furnished with a pyrimidine auxiliary is herein reported. This reaction is proposed to take place via an N−H-activated cyclometalate formed in situ. Experimental and DFT...
Ruthenium-Catalyzed para-Selective C−H Alkylation of Aniline Derivatives
Jamie A. Leitch, Claire L. McMullin, Andrew J. Paterson, Mary F. Mahon, Yunas Bhonoah, Christopher G. Frost
Nov 20, 2017
The para-selective C−H alkylation of aniline derivatives furnished with a pyrimidine auxiliary is herein reported. This reaction is proposed to take place via an N−H-activated cyclometalate formed in situ. Experimental and DFT...
Backbone conformation affects duplex initiation and duplex propagation in hybridisation of synthetic H-bonding oligomers.
Synthetic oligomers equipped with complementary H-bond donor and acceptor side chains form multiply H-bonded duplexes in organic solvents. Comparison of the duplex forming properties of four families of oligomers with different...
Catalytic meta-selective C–H functionalization to construct quaternary carbon centres
A catalytic meta-selective C–H functionalization of 2-phenylpyridines using a range of tertiary halides is described. The protocol is simple to perform and uses commercially available reagents to construct challenging quaternary...
A counterexample to "positive realness preserving model reduction with H-infinity norm error bounds"
We provide a counterexample to the H-infinity error bound for the difference of a positive real transfer function and its positive real balanced truncation stated in "Positive realness preserving model reduction with H-infinity...
Modes of activation of organometallic iridium complexes for catalytic water and C–H oxidation
Andrew J. Ingram, Arron B. Wolk, Cornelia Flender, Jialing Zhang, Christopher J. Johnson, Ulrich Hintermair, Robert H. Crabtree, Mark A. Johnson, Richard N. Zare
Jan 06, 2014
Sodium periodate (NaIO4) is added to Cp*IrIII (Cp* = C5Me5–) or (cod)IrI (cod = cyclooctadiene) complexes, which are water and C–H oxidation catalyst precursors, and the resulting aqueous reaction is investigated from...
Ruthenium catalyzed remote C4-selective C–H functionalisation of carbazoles via σ-activation
Jamie A. Leitch, Callum J. Heron, Janette Mcknight, Gabriele Kociok-Köhn, Yunas Bhonoah, Christopher G. Frost
Dec 18, 2017
We report the C4-selective C–H alkylation of carbazole derivatives furnished with a pyrimidine directing group at N9. This was realized using ruthenium catalyzed r-activation methodology, whereby C–H activation at C1 enables the...
A counterexample to "positive realness preserving model reduction with H-infinity norm error bounds"
We provide a counterexample to the H-infinity error bound for the difference of a positive real transfer function and its positive real balanced truncation stated in "Positive realness preserving model reduction with H-infinity...
Catalytic meta-selective C–H functionalization to construct quaternary carbon centres
A catalytic meta-selective C–H functionalization of 2-phenylpyridines using a range of tertiary halides is described. The protocol is simple to perform and uses commercially available reagents to construct challenging quaternary...
Fast protein motions are coupled to enzyme H-transfer reactions
Christopher Pudney, Andrew Guerriero, Nicola Jane Baxter, Linus O Johannissen, Jonathan Peter Waltho, Sam Hay, Nigel S Scrutton
Feb 01, 2013
Coupling of fast protein dynamics to enzyme chemistry is controversial and has ignited considerable debate, especially over the last 15 years in relation to enzyme-catalysed H-transfer. H-transfer can occur by quantum tunneling...
Enantioselective S‐H Insertion Reactions of α‐Carbonyl Sulfoxonium Ylides
Patrícia B. Momo, Alexandria N. Leveille, Elliot H. E. Farrar, Matthew N. Grayson, Anita E. Mattson, Antonio Carlos Bender Burtoloso
Sep 01, 2020
The first example of enantioselective S‐H insertion reactions of sulfoxonium ylides is reported. Under the influence of thiourea catalysis, excellent levels of enantiocontrol (up to 95% ee) and yields (up to 97%) are achieved...
Fast protein motions are coupled to enzyme H-transfer reactions
Christopher Pudney, Andrew Guerriero, Nicola Jane Baxter, Linus O Johannissen, Jonathan Peter Waltho, Sam Hay, Nigel S Scrutton
Feb 01, 2013
Coupling of fast protein dynamics to enzyme chemistry is controversial and has ignited considerable debate, especially over the last 15 years in relation to enzyme-catalysed H-transfer. H-transfer can occur by quantum tunneling...
Periphilin self-association underpins epigenetic silencing by the HUSH complex.
Daniil M Prigozhin, Christopher H Douse, Laura E Farleigh, Anna Albecka, Iva A Tchasovnikarova, Richard T Timms, Shun-Ichiro Oda, Frank Adolf, Stefan MV Freund, Sarah Maslen, Paul J Lehner, Yorgo Modis
Sep 08, 2020
The Ursinus Weekly, April 29, 1918
Musical treat by the Metropolitan Artists Varsity easily wallops Military College nine Chem-Bi banquet a delightful occasion Address of Dr. Christopher Noss Psychology of advertising Scholarship students' recital Ursinus...
Ursinus College Collegeville Pennsylvania newspaper baseball YMCA YWCA cultural history Higher Education Liberal Studies Social History United States History
Published by: Ursinus College
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