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1,3-Cyclohexanedione
1,3-Cyclohexanedione is an organic compound with the formula (CH2)4(CO)2. It is one of three isomeric cyclohexanediones. It is a colorless compound that occurs naturally. It is the substrate for cyclohexanedione hydrolase. The compound exists mainly as the enol tautomer. Synthesis, structure, and reactivity 1,3-Cyclohexanedione is produced by semi-hydrogenation of resorcinol: :C6H4(OH)2 + H2 → C6H8O2 1,3-Cyclohexanedione exists in solution predominantly as the enol tautomer. : It reacts under acid catalysis with alcohols to 3-alkoxyenones. Its pKa is 5.26. Treatment of the sodium salt of the enolate with methyl iodide gives 2-methyl-1,3-cyclohexanedione, which also exists predominantly as the enol. Derivatives Dimedone (5,5-dimethyl-1,3-cyclohexanedione) is a well established reagent. Several herbicides against grasses are formal derivatives of 1,3-cyclohexanedione. Examples of commercial products include cycloxydim, clethodim, tralkoxydim, butroxydim, seth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dimedone
Dimedone is an organic compound with the formula . Classified as a cyclic diketone, it is a derivative of 1,3-Cyclohexanedione, 1,3-cyclohexanedione. It is a white solid that is soluble in water, as well as ethanol and methanol. It once was used as a reagent to test for the aldehyde functional group. Synthesis Dimedone is prepared from mesityl oxide and diethyl malonate via a Michael addition reaction. Chemical properties Tautomerism Dimedone is in equilibrium with its tautomer in solution — in a 2:1 keto to enol ratio in chloroform. Crystalline dimedone contains chains of molecules, in the enol form, linked by hydrogen bonds: Reaction with aldehydes Dimedone reacts with aldehydes to give crystalline derivatives, whose melting points can be used to distinguish between aldehydes. : References {{reflist Diketones 3-Hydroxypropenals ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclohexane-1,3-dione Hydrolase
In enzymology, a cyclohexane-1,3-dione hydrolase () is an enzyme that catalyzes the chemical reaction :cyclohexane-1,3-dione + H2O \rightleftharpoons 5-oxohexanoate Thus, the two substrates of this enzyme are cyclohexane-1,3-dione and H2O, whereas its product is 5-oxohexanoate. This enzyme belongs to the family of hydrolases, specifically those acting on carbon-carbon bonds in ketonic substances. The systematic name A systematic name is a name given in a systematic way to one unique group, organism, object or chemical substance, out of a specific population or collection. Systematic names are usually part of a nomenclature. A semisystematic name or semitrivi ... of this enzyme class is cyclohexane-1,3-dione acylhydrolase (decyclizing). This enzyme is also called 1,3-cyclohexanedione hydrolase. References * EC 3.7.1 Enzymes of unknown structure {{hydrolase-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesotrione
Mesotrione is a herbicide, selective herbicide used mainly in maize crops and has also been shown to have weak insecticidal properties. It is a synthetic compound inspired by the natural substance leptospermone found in the bottlebrush tree ''Callistemon citrinus''. It inhibits the enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD) and is sold under brand names including Callisto and Tenacity. It was first marketed by Syngenta in 2001. History The invention of the triketone class of herbicides had its beginnings in an observation in 1977 of allelopathic weed control near a bottlebrush tree, ''Callistemon citrinus''. Chemists at the Stauffer Chemical Company identified the compound responsible as leptospermone, a known natural product which had not previously been reported as having biological activity. Extensive work on analogues led to the discovery and development of sulcotrione and mesotrione. : The triketone herbicides were found to be effective on a wide range of commerc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrogenation
Hydrogenation is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst such as nickel, palladium or platinum. The process is commonly employed to redox, reduce or Saturated and unsaturated compounds, saturate organic compounds. Hydrogenation typically constitutes the addition of pairs of hydrogen atoms to a molecule, often an alkene. Catalysts are required for the reaction to be usable; non-catalytic hydrogenation takes place only at very high temperatures. Hydrogenation reduces Double bond, double and Triple bond, triple bonds in hydrocarbons. Process Hydrogenation has three components, the Saturated and unsaturated compounds, unsaturated substrate, the hydrogen (or hydrogen source) and, invariably, a catalyst. The redox, reduction reaction is carried out at different temperatures and pressures depending upon the substrate and the activity of the catalyst. Related or competing reactions The same cataly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Resorcinol
Resorcinol (or resorcin) is a phenolic compound. It is an organic compound with the formula C6H4(OH)2. It is one of three isomeric benzenediols, the 1,3-isomer (or ''meta- (chemistry), meta''-isomer). Resorcinol crystallizes from benzene as colorless needles that are readily soluble in water, alcohol, and ether, but insoluble in chloroform and carbon disulfide. Production Resorcinol is produced in several steps from benzene, starting with dialkylation with propylene to give 1,3-Diisopropylbenzene, 1,3-diisopropylbenzene. Oxidation and Hock rearrangement of this disubstituted arene gives acetone and resorcinol. Resorcinol is a relatively inexpensive chemical. It is produced in only a very few locations around the world (as of 2010 only four commercial plants were known to be operative: in the United States, Germany, China, and Japan), and is the determining factor in the cost of Phenol formaldehyde resin, PRF adhesives. Production in the United States ended in 2017 with the cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sethoxydim
Sethoxydim is a postemergent herbicide for control of grass weeds in a wide variety of horticultural crops. p. 5. Sethoxydim is sold under brand names including , Torpedo, Ultima, Vantage, Conclude, and Rezult. It is manufactured by BASF, TopPro, and Monterey Lawn and Garden. Mode of Action Sethoxydim is a substituted 1,3-cyclohexanedione DIM herbicide, a type of Acetyl-CoA carboxylase inhibitor (ACCase herbicide), WSSA/ HRAC Group 1 (formerly in HRAC A). Resistance Resistant crops Maize Maize (; ''Zea mays''), also known as corn in North American English, is a tall stout grass that produces cereal grain. It was domesticated by indigenous peoples in southern Mexico about 9,000 years ago from wild teosinte. Native American ... (corn) resistant to ACCase inhibitors has been produced by selection under sethoxydim application. References {{Herbicides DIM herbicides Post-emergent herbicides Ethoxy compounds Thioethers Ketoxime ethers Group 1 herbicides [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclohexanedione
Cyclohexanedione may refer to: * 1,2-Cyclohexanedione * 1,3-Cyclohexanedione 1,3-Cyclohexanedione is an organic compound with the formula (CH2)4(CO)2. It is one of three isomeric cyclohexanediones. It is a colorless compound that occurs naturally. It is the substrate for cyclohexanedione hydrolase. The compound exist ... * 1,4-Cyclohexanedione {{Short pages monitor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Butroxydim
Butroxydim is a chemical used as a herbicide. It is a group A herbicide used to kill grass weeds in a range of broadacre crops. Structurally related herbicides against grasses are alloxydim, sethoxydim, clethodim, and cycloxydim. Butroxydim's HRAC classification is Group A (Australia and global), or Group 1 Group 1 may refer to: * Alkali metal, a chemical element classification for Alkali metal * Group 1 (motorsport), a regulation set of the FIA for series-production touring cars used in motorsport. * Group One Thoroughbred horse races, the leading e ... (numeric). Group A herbicides inhibit acetyl CoA carboxylase, (ACCase). References Ketones Ketoxime ethers Herbicides Ethoxy compounds Group 1 herbicides {{agriculture-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organic Compound
Some chemical authorities define an organic compound as a chemical compound that contains a carbon–hydrogen or carbon–carbon bond; others consider an organic compound to be any chemical compound that contains carbon. For example, carbon-containing compounds such as alkanes (e.g. methane ) and its derivatives are universally considered organic, but many others are sometimes considered inorganic, such as certain compounds of carbon with nitrogen and oxygen (e.g. cyanide ion , hydrogen cyanide , chloroformic acid , carbon dioxide , and carbonate ion ). Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known. The study of the properties, reactions, and syntheses of organic compounds comprise the discipline known as organic chemistry. For historical reasons, a few classes of carbon-containing compounds (e.g., carbonate salts and cyanide salts), along with a few other exceptions (e.g., carbon dioxide, and even ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clethodim
Clethodim is an organic compound. A member of the cyclohexanedione family of herbicide Herbicides (, ), also commonly known as weed killers, are substances used to control undesired plants, also known as weeds.EPA. February 201Pesticides Industry. Sales and Usage 2006 and 2007: Market Estimates. Summary in press releasMain page f ...s, it is used to control grasses, especially Lolium rigidum. Although impure samples appear yellowish, the compound is colorless. References Hydroxylamines Ketones Ketoxime ethers Herbicides Group 1 herbicides {{agriculture-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
