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Collidine
Collidine is the trivial name used to describe the chemical compounds which are Methyl group, trimethyl derivative (chemistry), derivatives of pyridine. Their chemical properties resemble those of pyridine, although the presence of the methyl groups may prohibit some of the more straightforward reactions. Collidine comes in several Isomer, isomers: *2,3,4-Collidine (2,3,4-trimethylpyridine) *2,3,5-Collidine (2,3,5-trimethylpyridine) *2,3,6-Collidine (2,3,6-trimethylpyridine) *2,4,5-Collidine (2,4,5-trimethylpyridine) *2,4,6-Collidine (2,4,6-trimethylpyridine) *3,4,5-Collidine (3,4,5-trimethylpyridine) All isomers share the molecular weight 121.18 g/mol and the chemical formula C8H11N. {{chemistry index Pyridines Amines Amine solvents ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,4,6-Collidine
2,4,6-Trimethylpyridine (2,4,6-collidine) is an organic compound which belongs to the Heterocyclic compound, heterocycles (more precisely, Heteroaromatic compound, heteroaromatics). It consists of a pyridine ring substituted with three methyl groups. It belongs to the substance group of the collidines, a group of six constitutional isomers. 2,4,6-trimethylpyridine is the most well-known isomer of this group. Properties The compound has a refractive index of 1.4959 (25 °C). Preparation 2,4,6-Trimethylpyridine was isolated from Dippel's oil in 1854. A synthesis can be carried out analogously to the Hantzsch's dihydropyridine synthesis from ethyl acetoacetate (as β-ketocarbonyl compound), acetaldehyde and ammonia in the ratio 2: 1: 1. Use By oxidation of the methyl groups with potassium permanganate collidinic acid is obtained. 2,4,6-Trimethylpyridine is used in organic syntheses (for example, for dehydrohalogenation), by binding the formed hydrogen halides. See also * 2,6- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,4,6-Trimethylpyridine
2,4,6-Trimethylpyridine (2,4,6-collidine) is an organic compound which belongs to the heterocycles (more precisely, heteroaromatics). It consists of a pyridine ring substituted with three methyl groups. It belongs to the substance group of the collidines, a group of six constitutional isomers. 2,4,6-trimethylpyridine is the most well-known isomer of this group. Properties The compound has a refractive index of 1.4959 (25 °C). Preparation 2,4,6-Trimethylpyridine was isolated from Dippel's oil in 1854. A synthesis can be carried out analogously to the Hantzsch's dihydropyridine synthesis from ethyl acetoacetate (as β-ketocarbonyl compound), acetaldehyde and ammonia in the ratio 2: 1: 1. Use By oxidation of the methyl groups with potassium permanganate collidinic acid is obtained. 2,4,6-Trimethylpyridine is used in organic syntheses (for example, for dehydrohalogenation), by binding the formed hydrogen halide In chemistry, hydrogen halides (hydrohalic acids when in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trivial Name
In chemistry, a trivial name is a nonsystematic name for a chemical substance. That is, the name is not recognized according to the rules of any formal system of chemical nomenclature such as IUPAC nomenclature of inorganic chemistry, IUPAC inorganic or IUPAC nomenclature of organic chemistry, IUPAC organic nomenclature. A trivial name is not a chemical nomenclature, formal name and is usually a common name. Generally, trivial names are not useful in describing the essential properties of the thing being named. Properties such as the molecular structure of a chemical compound are not indicated. And, in some cases, trivial names can be ambiguous or will carry different meanings in different industries or in different geographic regions (for example, a trivial name such as ''white metal'' can mean various things). Trivial names are simpler. As a result, a limited number of trivial chemical names are retained names, an accepted part of the nomenclature. Trivial names often arise in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Structural Formula
The structural formula of a chemical compound is a graphic representation of the molecular structure (determined by structural chemistry methods), showing how the atoms are possibly arranged in the real three-dimensional space. The chemical bonding within the molecule is also shown, either explicitly or implicitly. Unlike other chemical formula types, which have a limited number of symbols and are capable of only limited descriptive power, structural formulas provide a more complete geometric representation of the molecular structure. For example, many chemical compounds exist in different isomeric forms, which have different enantiomeric structures but the same molecular formula. There are multiple types of ways to draw these structural formulas such as: Lewis Structures, condensed formulas, skeletal formulas, Newman projections, Cyclohexane conformations, Haworth projections, and Fischer projections. Several systematic chemical naming formats, as in chemical databases, are used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyridines
Pyridine is a basic heterocyclic organic compound with the chemical formula . It is structurally related to benzene, with one methine group replaced by a nitrogen atom. It is a highly flammable, weakly alkaline, water-miscible liquid with a distinctive, unpleasant fish-like smell. Pyridine is colorless, but older or impure samples can appear yellow, due to the formation of extended, unsaturated polymeric chains, which show significant electrical conductivity. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Historically, pyridine was produced from coal tar. As of 2016, it is synthesized on the scale of about 20,000 tons per year worldwide. Properties Physical properties The molecular electric dipole moment is 2.2 debyes. Pyridine is diamagnetic and has a diamagnetic susceptibility of −48.7 × 10−6 cm3·mol−1. The standard enthalpy of formation is 100.2 kJ·mol−1 in the liquid phase ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CAS Registry Number
A CAS Registry Number (also referred to as CAS RN or informally CAS Number) is a unique identification number assigned by the Chemical Abstracts Service (CAS), US to every chemical substance described in the open scientific literature. It includes all substances described from 1957 through the present, plus some substances from as far back as the early 1800s. It is a chemical database that includes organic and inorganic compounds, minerals, isotopes, alloys, mixtures, and nonstructurable materials (UVCBs, substances of unknown or variable composition, complex reaction products, or biological origin). CAS RNs are generally serial numbers (with a check digit), so they do not contain any information about the structures themselves the way SMILES and InChI strings do. The registry maintained by CAS is an authoritative collection of disclosed chemical substance information. It identifies more than 182 million unique organic and inorganic substances and 68 million protein and DNA seq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,3,4-Trimethylpyridine
Collidine is the trivial name used to describe the chemical compounds which are trimethyl derivatives of pyridine. Their chemical properties resemble those of pyridine, although the presence of the methyl groups may prohibit some of the more straightforward reactions. Collidine comes in several isomers: * 2,3,4-Collidine (2,3,4-trimethylpyridine) * 2,3,5-Collidine (2,3,5-trimethylpyridine) * 2,3,6-Collidine (2,3,6-trimethylpyridine) * 2,4,5-Collidine (2,4,5-trimethylpyridine) *2,4,6-Collidine 2,4,6-Trimethylpyridine (2,4,6-collidine) is an organic compound which belongs to the Heterocyclic compound, heterocycles (more precisely, Heteroaromatic compound, heteroaromatics). It consists of a pyridine ring substituted with three methyl grou ... (2,4,6-trimethylpyridine) * 3,4,5-Collidine (3,4,5-trimethylpyridine) All isomers share the molecular weight 121.18 g/mol and the chemical formula C8H11N. {{chemistry index Pyridines Amines Amine solvents ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
