In organic chemistry, Markovnikov's rule or Markownikoff's rule describes the outcome of some addition reactions. The rule was formulated by Russian chemist Vladimir Markovnikov in 1870.
In organic chemistry, ozonolysis is an organic reaction where the unsaturated bonds are cleaved with ozone. Multiple carbon–carbon bond are replaced by carbonyl groups, such as aldehydes, ketones, and carboxylic acids. The reaction is predominantly applied to alkenes, but alkynes and azo compounds are also susceptible to cleavage. The outcome of the reaction depends on the type of multiple bond being oxidized and the work-up conditions.
The Baeyer–Villiger oxidation is an organic reaction that forms an ester from a ketone or a lactone from a cyclic ketone, using peroxyacids or peroxides as the oxidant. The reaction is named after Adolf von Baeyer and Victor Villiger who first reported the reaction in 1899.
In chemistry, a reaction intermediate, or intermediate, is a molecular entity arising within the sequence of a stepwise chemical reaction. It is formed as the reaction product of an elementary step, from the reactants and/or preceding intermediates, but is consumed in a later step. It does not appear in the chemical equation for the overall reaction.
A Criegee intermediate is a carbonyl oxide with two charge centers. These chemicals may react with sulfur dioxide and nitrogen oxides in the Earth's atmosphere, and are implicated in the formation of aerosols, which are an important factor in controlling global climate. Criegee intermediates are also an important source of OH. OH radicals are the most important oxidant in the troposphere, and are important in controlling air quality and pollution.
Anna Igorevna Krylov is the USC Associates Chair in Natural Sciences and Professor of Chemistry at the University of Southern California (USC), working in the field of theoretical and computational quantum chemistry. She is the inventor of the spin-flip method. Krylov is the president of Q-Chem, Inc. and an elected member of the International Academy of Quantum Molecular Science, the Academia Europaea, and the American Academy of Sciences and Letters.
Joseph S. Francisco is an American scientist and the former president of the American Chemical Society from 2009 to 2010. He currently serves as the President's Distinguished Professor of Earth and Environmental Science and professor of chemistry at the University of Pennsylvania. He was the Dean of the College of Arts and Sciences, and held the Elmer H. and Ruby M. Cordes Chair in chemistry at the University of Nebraska in Lincoln until 2018.
JoAnne Stubbe is an American chemist best known for her work on ribonucleotide reductases, for which she was awarded the National Medal of Science in 2009. In 2017, she retired as a Professor of Chemistry and Biology at the Massachusetts Institute of Technology.
Dennis A. Dougherty is the George Grant Hoag Professor of Chemistry at California Institute of Technology. His research applies physical organic chemistry to systems of biological importance. Dougherty utilizes a variety of approaches to further our understanding of the human brain, including the in vivo nonsense suppression methodology for incorporating unnatural amino acids into a variety of ion channels for structure-function studies.
Marilyn Esther Jacox was an American physical chemist. She was a National Institute of Standards and Technology (NIST) Fellow and Scientist Emeritus in the Sensor Science Division.
Veronica Vaida is a Romanian-American chemist and professor at the University of Colorado Boulder. She is an expert in environmental chemistry and aerosols.
Photoredox catalysis is a branch of photochemistry that uses single-electron transfer. Photoredox catalysts are generally drawn from three classes of materials: transition-metal complexes, organic dyes, and semiconductors. While organic photoredox catalysts were dominant throughout the 1990s and early 2000s, soluble transition-metal complexes are more commonly used today.
Donna Blackmond is an American chemical engineer and the John C. Martin Endowed Chair in Chemistry at Scripps Research in La Jolla, CA. Her research focuses on prebiotic chemistry, the origin of biological homochirality, and kinetics and mechanisms of asymmetric catalytic reactions. Notable works include the development of Reaction Progress Kinetic Analysis (RPKA), analysis of non-linear effects of catalyst enantiopurity, biological homochirality and amino acid behavior.
In organic chemistry, alkenyl peroxides are organic compounds bearing an alkene residue directly at the peroxide group, resulting in the general formula R2C=C(R)OOR. They have very weak O-O bonds and are thus generally unstable compounds.
Karen Ila Goldberg is an American chemist, currently the Vagelos Professor of Energy Research at University of Pennsylvania. Goldberg is most known for her work in inorganic and organometallic chemistry. Her most recent research focuses on catalysis, particularly on developing catalysts for oxidation, as well as the synthesis and activation of molecular oxygen. In 2018, Goldberg was elected to the National Academy of Sciences.
The Criegee oxidation is a glycol cleavage reaction in which vicinal diols are oxidized to form ketones and aldehydes using lead tetraacetate. It is analogous to the use of periodate but uses a milder oxidant. This oxidation was discovered by Rudolf Criegee and coworkers and first reported in 1931 using ethylene glycol as the substrate.
Jennifer G. Murphy is a Canadian environmental chemist and an associate professor at the University of Toronto. She is known for her research how air pollutants such as increased reactive nitrogen affect the global climate.
Julia A. Kovacs is an American chemist specializing in bioinorganic chemistry. She is professor of chemistry at the University of Washington. Her research involves synthesizing small-molecule mimics of the active sites of metalloproteins, in order to investigate how cysteinates influence the function of non-heme iron enzymes, and the mechanism of the oxygen-evolving complex (OEC).
Anne Bowen McCoy is a theoretical chemist. She is the Natt-Lingafelter Professor of Chemistry at the University of Washington, and her research interests include vibrational spectroscopy, hydrogen bonding, and charge-transfer bands. She received the 2023 Jack Simons Award in Theoretical Chemistry “for her development and application of theoretical methods for analyzing the vibrational spectra & dynamics of floppy molecules and clusters.”
Kenichi Yokoyama is an enzymologist, chemical biologist, and natural product biochemist originally from Tokyo, Japan. He is an Associate Professor of Biochemistry at Duke University School of Medicine. In 2019, Yokoyama was awarded the Pfizer Award in Enzyme Chemistry from the American Chemical Society.
