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John F. Hartwig
John F. Hartwig is an American organometallic chemist who holds the position of Henry Rapoport Professor of Chemistry at the University of California, Berkeley. His laboratory traditionally focuses on developing transition metal-catalyzed reactions. Hartwig is known for helping develop the Buchwald–Hartwig amination, a chemical reaction used in organic chemistry for the synthesis of carbon–nitrogen bonds via the palladium-catalyzed cross-coupling of amines with aryl halides. Education and training Hartwig received his A.B. from Princeton University in 1986. With Robert G. Bergman and Richard A. Andersen (chemist), Richard A. Andersen as coadvisors, he earned his Ph.D. from the University of California, Berkeley in 1990. Thereafter he was an American Cancer Society Postdoctoral Associate at MIT, where he worked in the laboratory of Stephen J. Lippard. Research He assumed an independent position at Yale University in 1992. Over the next 14 years, he was promoted to associa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elmhurst, Illinois
Elmhurst is a city in DuPage County, Illinois, DuPage and Cook County, Illinois, Cook counties in the U.S. state of Illinois. It is a western suburb of Chicago. The population was 45,786 at the 2020 United States census, 2020 census. History Members of the Potawatomi Native Americans in the United States, Native American people, who settled along Salt Creek (Des Plaines River tributary), Salt Creek just south of where the city would develop, are the earliest known settlers of the Elmhurst area. Around 1836, European-American immigration, immigrants settled on tracts of land along the same stream, creek. At what would become Elmhurst City Centre, a native of Ohio named Gerry Bates established a community on a tract of "treeless land" in 1842. The following year, Hill Cottage Tavern opened where St. Charles Road and Cottage Hill Avenue presently intersect. In 1845, the community was officially named Cottage Hill when a post office was established. Four years later, the Galena an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palladium-catalyzed Cross-coupling
In organic chemistry, a cross-coupling reaction is a reaction where two different fragments are joined. Cross-couplings are a subset of the more general coupling reactions. Often cross-coupling reactions require metal catalysts. One important reaction type is this: : (R, R' = organic fragments, usually aryl; M = main group center such as Li or MgX; X = halide) These reactions are used to form carbon–carbon bonds but also carbon-heteroatom bonds. Cross-coupling reaction are a subset of coupling reactions. Richard F. Heck, Ei-ichi Negishi, and Akira Suzuki were awarded the 2010 Nobel Prize in Chemistry for developing palladium-catalyzed coupling reactions. Mechanism Many mechanisms exist reflecting the myriad types of cross-couplings, including those that do not require metal catalysts. Often, however, cross-coupling refers to a metal-catalyzed reaction of a nucleophilic partner with an electrophilic partner. In such cases, the mechanism generally involves reductive eliminat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbert C
Herbert may refer to: People * Herbert (musician), a pseudonym of Matthew Herbert * Herbert (given name) * Herbert (surname) Places Antarctica * Herbert Mountains, Coats Land * Herbert Sound, Graham Land Australia * Herbert, Northern Territory, a rural locality * Herbert, South Australia. former government town * Division of Herbert, an electoral district in Queensland * Herbert River, a river in Queensland * County of Herbert, a cadastral unit in South Australia Canada * Herbert, Saskatchewan, Canada, a town * Herbert Road, St. Albert, Canada New Zealand * Herbert, New Zealand, a town * Mount Herbert (New Zealand) United States * Herbert, Illinois, an unincorporated community * Herbert, Michigan, a former settlement * Herbert Creek, a stream in South Dakota * Herbert Island, Alaska Arts, entertainment, and media Fictional entities * Herbert (Disney character) * Herbert Pocket, a character in the Charles Dickens novel ''Great Expectations'' * Herbert West, ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Academy Of Arts And Sciences
The American Academy of Arts and Sciences (The Academy) is one of the oldest learned societies in the United States. It was founded in 1780 during the American Revolution by John Adams, John Hancock, James Bowdoin, Andrew Oliver, and other Founding Fathers of the United States. It is headquartered in Cambridge, Massachusetts. Membership in the academy is achieved through a nominating petition, review, and election process. The academy's quarterly journal, '' Dædalus'', is published by the MIT Press on behalf of the academy, and has been open-access since January 2021. The academy also conducts multidisciplinary public policy research. Laurie L. Patton has served as President of the Academy since January 2025. History The Academy was established by the Massachusetts legislature on May 4, 1780, charted in order "to cultivate every art and science which may tend to advance the interest, honor, dignity, and happiness of a free, independent, and virtuous people." The sixty-tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clarivate Citation Laureates
Clarivate Citation Laureates, formerly Thomson Reuters Citation Laureates, is a list of candidates considered likely to win the Nobel Prize in their respective field. The candidates are so named based on the citation impact of their published research.The list of awardees is announced annually prior to the Nobel Prize ceremonies of that year. In October 2016, Thomson Reuters Intellectual Property and Science Business was acquired by Onex and Baring Asia and the newly independent company was named as Clarivate. Thomson Reuters Citation Laureates was established in 1989. The list pertains to likely Nobel Prize winners in medicine, chemistry, physics, and economics. There appears to be a correlation between high citation rates for a published researcher and the award of prestigious accolades. Furthermore, citation rates disclose researchers furnishing instrumental contributions that advance the science of their respective field. Finally, choosing one tenth of one percent (0.1%) of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emanuel Merck Lectureship
The Emanuel Merck Lectureship was founded in 1992 by Technische Universität Darmstadt and Merck KGaA located in Darmstadt, Germany. The lectureship aspires to enlighten scientists and students at Technische Universität Darmstadt, as well as Merck KGaA employees and interested public with leading scientific research in chemistry. The award honors Heinrich Emanuel Merck (1794–1855) the founder of Merck, an entrepreneur, an original experimenter and a successful scientist. Emanuel Merck maintained membership in many scientific associations and held many personal relationships with leading researchers of his era, including Justus von Liebig, Friedrich Wöhler, Max von Pettenkofer and Louis Pasteur. The Emanuel Merck Lectureship attempts to continue this tradition of international exchange between researchers. The lectures are held over multiple days. The lectures include lectures that are open to the public, lectures for a closed audience and seminars for students. The invitation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BBVA Foundation Frontiers Of Knowledge Award
The BBVA Foundation Frontiers of Knowledge Awards () are an international award programme recognizing significant contributions in the areas of scientific research and cultural creation. The categories that make up the Frontiers of Knowledge Awards respond to the knowledge map of the present age. As well as the fundamental knowledge that is at their core, they address developments in information and communication technologies, and interactions between biology and medicine, ecology and conservation biology, climate change, economics, humanities and social sciences, and, finally, contemporary musical creation and performance. Specific categories are reserved for developing knowledge fields of critical relevance to confront central challenges of the 21st century, as in the case of the two environmental awards. The awards were established in 2008, with the first set of winners receiving their prizes in 2009. The BBVA Foundation – belonging to financial group BBVA – is partnered in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lawrence Berkeley National Laboratory
Lawrence Berkeley National Laboratory (LBNL, Berkeley Lab) is a Federally funded research and development centers, federally funded research and development center in the Berkeley Hills, hills of Berkeley, California, United States. Established in 1931 by the University of California (UC), the laboratory is sponsored by the United States Department of Energy and administered by the UC system. Ernest Lawrence, who won the Nobel prize for inventing the cyclotron, founded the lab and served as its director until his death in 1958. Located in the Berkeley Hills, the lab overlooks the campus of the University of California, Berkeley. Scientific research The mission of Berkeley Lab is to bring science solutions to the world. The research at Berkeley Lab has four main themes: discovery science, energy, earth systems, and the future of science. The Laboratory's 22 scientific divisions are organized within six areas of research: Computing Sciences, Physical Sciences, Earth and Environmenta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Illinois At Urbana–Champaign
The University of Illinois Urbana-Champaign (UIUC, U of I, Illinois, or University of Illinois) is a public land-grant research university in the Champaign–Urbana metropolitan area, Illinois, United States. Established in 1867, it is the founding campus and flagship institution of the University of Illinois System. With over 59,000 students, the University of Illinois is one of the largest public universities by enrollment in the United States. The university contains 16 schools and colleges and offers more than 150 undergraduate and over 100 graduate programs of study. The university holds 651 buildings on and its annual operating budget in 2016 was over $2 billion. The University of Illinois Urbana-Champaign also operates a research park home to innovation centers for over 90 start-up companies and multinational corporations. The University of Illinois Urbana-Champaign is a member of the Association of American Universities and is classified among "R1: Doctoral Univ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aliphatic C-H Borylation-3
In organic chemistry, hydrocarbons (chemical compound, compounds composed solely of carbon and hydrogen) are divided into two classes: aromatic compounds and aliphatic compounds (; G. ''aleiphar'', fat, oil). Aliphatic compounds can be Saturated and unsaturated compounds, saturated (in which all the C-C bonds are single, requiring the structure to be completed, or 'saturated', by hydrogen) like hexane, or wikt:unsaturated, unsaturated, like hexene and hexyne. Open-chain compounds, whether straight or branched, and which contain no rings of any type, are always aliphatic. cyclic compound, Cyclic compounds can be aliphatic if they are not Aromaticity#Characteristics_of_aromatic_systems, aromatic. Structure Aliphatics compounds can be Saturated and unsaturated compounds, saturated, joined by single bonds (alkanes), or unsaturated, with double bonds (alkenes) or triple bonds (alkynes). If other elements (heteroatoms) are bound to the Catenation, carbon chain, the most common bein ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triflate
In organic chemistry, triflate (Preferred IUPAC name, systematic name: trifluoromethanesulfonate), is a functional group with the Chemical formula, formula and Chemical structure, structure . The triflate group is often represented by , as opposed to −Tf, which is the trifluoromethylsulfonyl, triflyl group, . For example, Butyl group, ''n''-butyl triflate can be written as . The corresponding triflate Ion, anion, , is an extremely stable polyatomic ion; this comes from the fact that triflic acid () is a superacid; i.e. it is more acidic than pure sulfuric acid, already one of the strongest acids known. Applications A triflate group is an excellent leaving group used in certain organic reactions such as nucleophilic substitution, Suzuki couplings and Heck reactions. Since alkyl triflates are extremely reactive in SN2 reaction, SN2 reactions, they must be stored in conditions free of nucleophiles (such as water). The anion owes its stability to resonance stabilization which ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
