Search Results - "Stahl, Shannon S."

Quinone-Catalyzed Selective Oxidation of Organic Molecules by Wendlandt, Alison E., Stahl, Shannon S.

“…Quinones are common stoichiometric reagents in organic chemistry. Para‐quinones with high reduction potentials, such as DDQ and chloranil, are widely used and…”
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Formic-acid-induced depolymerization of oxidized lignin to aromatics by Rahimi, Alireza, Ulbrich, Arne, Coon, Joshua J., Stahl, Shannon S.

“…A method for the depolymerization of oxidized lignin under mild conditions in aqueous formic acid is described that results in more than 60 wt% yield of…”
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Overcoming the “Oxidant Problem”: Strategies to Use O2 as the Oxidant in Organometallic C–H Oxidation Reactions Catalyzed by Pd (and Cu) by Campbell, Alison N, Stahl, Shannon S

“…Oxidation reactions are key transformations in organic chemistry because they can increase chemical complexity and incorporate heteroatom substituents into…”
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Chemoselective Metal-Free Aerobic Alcohol Oxidation in Lignin by Rahimi, Alireza, Azarpira, Ali, Kim, Hoon, Ralph, John, Stahl, Shannon S

“…An efficient organocatalytic method for chemoselective aerobic oxidation of secondary benzylic alcohols within lignin model compounds has been identified…”
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C(sp 3 )-H methylation enabled by peroxide photosensitization and Ni-mediated radical coupling by Vasilopoulos, Aristidis, Krska, Shane W, Stahl, Shannon S

“…The "magic methyl" effect describes the change in potency, selectivity, and/or metabolic stability of a drug candidate associated with addition of a single…”
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Highly Practical Copper(I)/TEMPO Catalyst System for Chemoselective Aerobic Oxidation of Primary Alcohols by Hoover, Jessica M, Stahl, Shannon S

“…Aerobic oxidation reactions have been the focus of considerable attention, but their use in mainstream organic chemistry has been constrained by limitations in…”
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Ligand-Promoted Palladium-Catalyzed Aerobic Oxidation Reactions by Wang, Dian, Weinstein, Adam B, White, Paul B, Stahl, Shannon S

“…Palladium-catalyzed aerobic oxidation reactions have been the focus of industrial application and extensive research efforts for nearly 60 years. A significant…”
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Synthesis of Cyclic Enones via Direct Palladium-Catalyzed Aerobic Dehydrogenation of Ketones by Diao, Tianning, Stahl, Shannon S

“…α,β-Unsaturated carbonyl compounds are versatile intermediates in the synthesis of pharmaceuticals and biologically active compounds. Here, we report the…”
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Electrochemical Functional‐Group‐Tolerant Shono‐type Oxidation of Cyclic Carbamates Enabled by Aminoxyl Mediators by Wang, Fei, Rafiee, Mohammad, Stahl, Shannon S.

“…An electrochemical method has been developed for α‐oxygenations of cyclic carbamates by using a bicyclic aminoxyl as a mediator and water as the nucleophile…”
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Electrochemical Aminoxyl-Mediated Oxidation of Primary Alcohols in Lignin to Carboxylic Acids: Polymer Modification and Depolymerization by Rafiee, Mohammad, Alherech, Manar, Karlen, Steven D, Stahl, Shannon S

“…An electrochemical process has been developed for chemoselective oxidation of primary alcohols in lignin to the corresponding carboxylic acids. The…”
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Enantioselective cyanation of benzylic C-H bonds via copper-catalyzed radical relay by Zhang, Wen, Wang, Fei, McCann, Scott D., Wang, Dinghai, Chen, Pinhong, Stahl, Shannon S., Liu, Guosheng

“…Direct methods for stereoselective functionalization of sp³-hybridized carbon-hydrogen [C(sp³)-H] bonds in complex organic molecules could facilitate much more…”
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Efficient and Selective Cu/Nitroxyl-Catalyzed Methods for Aerobic Oxidative Lactonization of Diols by Xie, Xiaomin, Stahl, Shannon S

“…Cu/nitroxyl catalysts have been identified that promote highly efficient and selective aerobic oxidative lactonization of diols under mild reaction conditions…”
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Copper-Catalyzed Aerobic Oxidative CH Functionalizations: Trends and Mechanistic Insights by Wendlandt, Alison E., Suess, Alison M., Stahl, Shannon S.

“…The selective oxidation of CH bonds and the use of O2 as a stoichiometric oxidant represent two prominent challenges in organic chemistry. Copper(II) is a…”
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N‑Hydroxyphthalimide-Mediated Electrochemical Iodination of Methylarenes and Comparison to Electron-Transfer-Initiated C–H Functionalization by Rafiee, Mohammad, Wang, Fei, Hruszkewycz, Damian P, Stahl, Shannon S

“…An electrochemical method has been developed for selective benzylic iodination of methylarenes. The reactions feature the first use of N-hydroxy­phthalimide as…”
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Palladium(II)-Catalyzed Alkene Functionalization via Nucleopalladation: Stereochemical Pathways and Enantioselective Catalytic Applications by McDonald, Richard I, Liu, Guosheng, Stahl, Shannon S

“…Recent studies involving palladium(II)-catalyzed alkene functionalization via nucleopalladation are examined. To date, there have only been 2 mechanistic…”
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Palladium-Catalyzed Aerobic Dehydrogenation of Substituted Cyclohexanones to Phenols by Izawa, Yusuke, Pun, Doris, Stahl, Shannon S.

“…Aromatic molecules are key constituents of many pharmaceuticals, electronic materials, and commodity plastics. The utility of these molecules directly reflects…”
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Mechanism of Copper(I)/TEMPO-Catalyzed Aerobic Alcohol Oxidation by Hoover, Jessica M, Ryland, Bradford L, Stahl, Shannon S

“…Homogeneous Cu/TEMPO catalyst systems (TEMPO = 2,2,6,6-tetramethylpiperidine-N-oxyl) have emerged as some of the most versatile and practical catalysts for…”
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Palladium-Catalyzed Aerobic Dehydrogenation of Cyclic Hydrocarbons for the Synthesis of Substituted Aromatics and Other Unsaturated Products by Iosub, Andrei V, Stahl, Shannon S

“…Catalytic dehydrogenation of saturated or partially saturated six-membered carbocycles into aromatic rings represents an appealing strategy for the synthesis…”
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Catalytic Aerobic Dehydrogenation of Nitrogen Heterocycles Using Heterogeneous Cobalt Oxide Supported on Nitrogen-Doped Carbon by Iosub, Andrei V, Stahl, Shannon S

“…Dehydrogenation of (partially) saturated heterocycles provides an important route to heteroaromatic compounds. A heterogeneous cobalt oxide catalyst,…”
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Iron(III) Nitrate/TEMPO-Catalyzed Aerobic Alcohol Oxidation: Distinguishing between Serial versus Integrated Redox Cooperativity by Nutting, Jordan E, Mao, Kaining, Stahl, Shannon S

“…Aerobic alcohol oxidations catalyzed by transition metal salts and aminoxyls are prominent examples of cooperative catalysis. Cu/aminoxyl catalysts have been…”
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