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Brannon will deliver keynote address at annual composition conferenc

Citizenship in a Changing Civilization by Melvin Brannon, UND Spring Commencement: June 1947

Text of speech delivered by Melvin Brannon at the UND Spring Commencement on June 8, 1947. Brannon was Dean of the UND Medical School from 1905 until 1911 and the College of Liberal Arts from 1911 to 1914. After leaving UND, he served as President of the University of Idaho and Beloit College, in addition to acting as Chancellor of the University of Montana. He entitled his remarks: Citizenship in a Changing Civilization

In Re: Brannon

USDC for the Western District of Pennsylvani

SLIDES: Planning Tools: Wildlife Mitigation Plan (WMP), Comprehensive Drilling Plan (CDP), Geographic Area Plan (GAP)

Presenter: Ginny Brannon, Colorado Department of Natural Resources 7 slide

Sorbents for carbon dioxide capture.

Provided herein are sorbents for carbon dioxide (CO2) capture, such as from natural gas and coal-fired power plant flue gases, and uses thereof

Mechanistic and computational studies of oxidatively-induced aryl-CF3 bond formation at palladium

This article describes the rational design of 1st generation systems for oxidatively-induced Aryl– CF3 bond-forming reductive elimination from PdII. Treatment of (dtbpy)PdII(Aryl)(CF3) (dtbpy = di-tert-butylbipyridine) with NFTPT (N-fluoro-1,3,5-trimethylpyridium triflate) afforded the isolable PdIV intermediate (dtbpy)PdIV(Aryl)(CF3)(F)(OTf). Thermolysis of this complex at 80 °C resulted in Aryl–CF3 bond-formation. Detailed experimental and computational mechanistic studies have been conducted to gain insights into the key reductive elimination step. Reductive elimination from this PdIV species proceeds via pre-equilibrium dissociation of TfO− followed by Aryl–CF3 coupling. DFT calculations reveal that the transition state for Aryl–CF3 bond formation involves the CF3 acting as an electrophile with the Aryl ligand acting as a nucleophilic coupling partner. These mechanistic considerations along with DFT calculations have facilitated the design of a 2nd generation system utilizing the tmeda (N,N,N’,N’-tetramethylethylenediamine) ligand in place of dtbpy. The tmeda complexes undergo oxidative trifluoromethylation at room temperature

Carbon(sp3)-fluorine bond-forming reductive elimination from palladium(IV) complexes.

The development of transition-metal-catalyzed reactions for the formation of CF bonds has been an area of intense research over the past decade.[1–3] Traditionally, the CF coupling step of these sequences has proven challenging because of the high kinetic barrier for CF bond-forming reductive elimination from most transition-metal centers.[1] Our approach to address this challenge has involved the use of PdII catalysts in conjunction with F+-based oxidants. Since 2006, a variety of PdII-catalyzed reactions of F+ reagents have been developed to introduce fluorine at both C(sp2 ) and C(sp3 ) centers.[4–6] These transformations have been proposed to proceed through CF bond-forming reductive elimination from transient, highly reactive PdIV alkyl/aryl fluoride intermediate

SLIDES: Planning Tools: Wildlife Mitigation Plan (WMP), Comprehensive Drilling Plan (CDP), Geographic Area Plan (GAP)

Presenter: Ginny Brannon, Colorado Department of Natural Resources 7 slide

High-valent copper in biomimetic and biological oxidations

A long-standing debate in the Cu-O2 field has revolved around the relevance of the Cu(III) oxidation state in biological redox processes. The proposal of Cu(III) in biology is generally challenged as no spectroscopic or structural evidence exists currently for its presence. The reaction of synthetic Cu(I) complexes with O2 at low temperature in aprotic solvents provides the opportunity to investigate and define the chemical landscape of Cu-O2 species at a small molecule level of detail; eight different types are characterized structurally, three of which contain at least one Cu(III) center. Simple imidazole or histamine ligands are competent in these oxygenation reactions to form Cu(III) complexes. The combination of synthetic structural and reactivity data suggests (i) that Cu(I) should be considered as either a one or two electron reductant reacting with O2, (ii) that Cu(III) reduction potentials of these formed complexes are modest and well within the limits of a protein matrix and (iii) that primary amine and imidazole ligands are surprisingly good at stabilizing Cu(III) centers. These Cu(III) complexes are efficient oxidants for hydroxylating phenolate substrates with reaction hallmarks similar to that performed in biological systems. The remarkable ligation similarity of the synthetic and biological systems makes it difficult to continue to exclude Cu(III) from biological discussion

Viola Brannon Brown

https://digitalcommons.georgiasouthern.edu/willowhillheritage-obituaries/2962/thumbnail.jp