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Benzoin Mechanism
Benzoin may refer to: *Benzoin (organic compound), an organic compound with the formula PhCH(OH)C(O)Ph *Benzoin (resin), a balsamic resin obtained from the bark of several species of trees in the genus Styrax *Benzoin aldolase, an enzyme that catalyzes the chemical reaction benzoin to benzaldehyde *Benzoin condensation, a reaction between two aromatic aldehydes *Benzoin odoriferum or Lindera benzoin, a shrub in the laurel family *Benzoin tree, the common name of Styrax, a genus of shrubs or trees in the family Styracaceae *Tincture of benzoin, a pungent solution of benzoin resin in ethanol See also * C14H12O2, molecular formula of benzoin *Benzene (C6H6), organic chemical compound of hydrocarbon class *Benzoic acid Benzoic acid is a white (or colorless) solid organic compound with the formula , whose structure consists of a benzene ring () with a carboxyl () substituent. It is the simplest aromatic carboxylic acid. The name is derived from gum benzoin ... (or C6H5C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benzoin (organic Compound)
Benzoin ( or ) is an organic compound with the formula PhCH(OH)C(O)Ph. It is a hydroxy ketone attached to two phenyl groups. It appears as off-white crystals, with a light camphor-like odor. Benzoin is synthesized from benzaldehyde in the benzoin condensation. It is chiral and it exists as a pair of enantiomers: (''R'')-benzoin and (''S'')-benzoin. Benzoin is ''not'' a constituent of benzoin resin obtained from the benzoin tree ''(Styrax)'' or tincture of benzoin. The main component in these natural products is benzoic acid. History Benzoin was first reported in 1832 by Justus von Liebig and Friedrich Woehler during their research on oil of bitter almond, which is benzaldehyde with traces of hydrocyanic acid. The catalytic synthesis by the benzoin condensation was improved by Nikolay Zinin during his time with Liebig. Uses The main uses of benzoin are as a precursor to benzil, which is a photoinitiator.Hardo Siegel, Manfred Eggersdorfer "Ketones" in Ullmann's Encyclopedia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benzoin (resin)
Benzoin or benjamin (corrupted pronunciation) is a balsamic resin obtained from the bark of several species of trees in the genus '' Styrax''. It is used in perfumes and some kinds of incense and as a flavoring and medicine (see tincture of benzoin). It is distinct from the chemical compound benzoin, which is ultimately derived chemically from benzoin resin; the resin, however, does not contain this compound. Benzoin is sometimes called gum benzoin or gum benjamin, and in India ''Sambrani or'' loban, though loban is, via Arabic ''lubān'', a generic term for frankincense-type incense, e.g., fragrant tree resin. Benzoin is also called storax, not to be confused with the balsam of the same name obtained from the Hamamelidaceae family. Benzoin is a common ingredient in incense-making and perfumery because of its sweet vanilla-like aroma and fixative properties. Gum benzoin is a major component of the type of church incense used in Russia and some other Orthodox Christian soci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benzoin Aldolase
The enzyme benzoin aldolase () catalyzes the chemical reaction :2-hydroxy-1,2-diphenylethanoneAlso known as benzoin. \rightleftharpoons 2 benzaldehyde This enzyme belongs to the family of lyases, specifically the aldehyde-lyases, which cleave carbon-carbon bonds. The systematic name of this enzyme class is 2-hydroxy-1,2-diphenylethanone benzaldehyde-lyase (benzaldehyde-forming)—the systematic name of benzoin is 2-hydroxy-1,2-diphenylethanone. Other names in common use include benzaldehyde lyase, and 2-hydroxy-1,2-diphenylethanone benzaldehyde-lyase. It employs one cofactor, thiamin diphosphate. Structural studies As of late 2007, 3 structures A structure is an arrangement and organization of interrelated elements in a material object or system, or the object or system so organized. Material structures include man-made objects such as buildings and machines and natural objects such as ... have been solved for this class of enzymes, with PDB accession codes , , and . ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benzoin Condensation
The benzoin addition is an addition reaction involving two aldehydes. The reaction generally occurs between aromatic aldehydes or glyoxals, and results in formation of an acyloin Acyloins or α-hydroxy ketones are a class of organic compounds which all possess a hydroxy group adjacent to a ketone group. The name acyloin is derived from the fact that they are formally derived from reductive coupling of carboxylic acyl grou .... In the classic example, benzaldehyde is converted to Benzoin (organic compound), benzoin. The benzoin condensation was first reported in 1832 by Justus von Liebig and Friedrich Wöhler during their research on almond, bitter almond oil. The catalytic version of the reaction involving cyanide was developed by Nikolay Zinin in the late 1830s. Reaction mechanism The reaction is catalysis, catalyzed by nucleophile, nucleophiles such as a cyanide or an persistent carbene, N-heterocyclic carbene (usually Thiazolium salt, thiazolium salts). The reaction mecha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benzoin Odoriferum
''Lindera benzoin'' (commonly called spicebush, common spicebush, northern spicebush, wild allspice, or Benjamin bush) is a shrub in the laurel family, native to eastern North America, ranging from Maine and New York to Ontario in the north, and to Kansas, Texas, and northern Florida in the center and south. Within its native range it is a relatively common plant where it grows in the understory in moist, rich woods, especially those with exposed limestone. Description Spicebush is a deciduous shrub growing to tall. It has a colonial nature and often reproduces by root sprouting, forming clumps or thickets. The leaves are alternately arranged on the stem, simple, long and broad, oval or broadest beyond the middle of the leaf. They have a smooth edge with no teeth and are dark green above and paler below. The leaves, along with the stems are very aromatic when crushed with a spicy, citrusy smell, hence the common names and the specific epithet '' benzoin.'' In the fall th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benzoin Tree
''Styrax'' (common names storax or snowbell) is a genus of about 130 species of large shrubs or small trees in the family Styracaceae, mostly native to warm temperate to tropical regions of the Northern Hemisphere, with the majority in eastern and southeastern Asia, but also crossing the equator in South America.Fritsch ''et al.'' (2001) The resin obtained from the tree is called benzoin or storax (not to be confused with the '' Liquidambar'' storax balsam). The genus ''Pamphilia'', sometimes regarded as distinct, is now included within ''Styrax'' based on analysis of morphological and DNA sequence data. The spicebush (''Lindera benzoin'') is a different plant, in the family Lauraceae. Styrax trees grow to 2–14 m tall, and have alternate, deciduous or evergreen simple ovate leaves 1–18 cm long and 2–10 cm broad. The flowers are pendulous, with a white 5–10-lobed corolla, produced 3–30 together on open or dense panicles 5–25 cm long. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tincture Of Benzoin
Tincture of benzoin is a pungent solution of benzoin resin in ethanol. A similar preparation called Friar's Balsam or Compound Benzoin Tincture contains, in addition, Cape aloes or Barbados aloes and storax resin. Friar's balsam was invented by Joshua Ward around 1760. Use Compound Benzoin Tincture is often applied to skin under an adhesive bandage. It protects the skin from allergy to the adhesive and makes the bandage adhere longer. It is also used by athletes for its reputation of toughening skin. Orthopedists often apply it under a cast, because it protects the skin and diminishes itching. It is also an old remedy for congested sinuses and lungs. A few drops on the surface of a bowl of hot water, over which one holds one's face and breathes the steam; preferably, with a towel over one's head, to keep the steam in. It can be applied to skin fissures, canker sores and fever blisters as a styptic and antiseptic. It is thought that light turns the Benzoin in these modern con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C14H12O2 , a stilbenoid
{{MolFormDisambig ...
The molecular formula C14H12O2 (molar mass : 212.24 g/mol, exact mass: 212.08373 u) may refer to: * Benzoin * Benzyl benzoate * Felbinac, a medicine * 1-Keto-1,2,3,4-tetrahydrophenanthrene, a syntethic estrogen * Pinosylvin, a stilbenoid * 3,4'-Dihydroxystilbene, a stilbenoid * Stilbestrol Stilbestrol, or stilboestrol, also known as 4,4'-dihydroxystilbene or 4,4'-stilbenediol, is a stilbenoid nonsteroidal estrogen and the parent compound of a group of more potent nonsteroidal estrogen derivatives that includes, most notably, dieth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benzene
Benzene is an organic chemical compound with the molecular formula C6H6. The benzene molecule is composed of six carbon atoms joined in a planar ring with one hydrogen atom attached to each. Because it contains only carbon and hydrogen atoms, benzene is classed as a hydrocarbon. Benzene is a natural constituent of petroleum and is one of the elementary petrochemicals. Due to the cyclic continuous pi bonds between the carbon atoms, benzene is classed as an aromatic hydrocarbon. Benzene is a colorless and highly flammable liquid with a sweet smell, and is partially responsible for the aroma of gasoline. It is used primarily as a precursor to the manufacture of chemicals with more complex structure, such as ethylbenzene and cumene, of which billions of kilograms are produced annually. Although benzene is a major industrial chemical, it finds limited use in consumer items because of its toxicity. History Discovery The word "''benzene''" derives from "''gum benzoin''" ( ben ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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