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1,2-Dimethylcyclopropane
1,2-Dimethylcyclopropane is a cycloalkane consisting of a cyclopropane ring substituted with two methyl groups attached to adjacent carbon atoms. It has three stereoisomers, one ''Cis–trans isomerism, cis''-isomer and a pair of ''trans''-enantiomers, which differ depending on the orientation of the two methyl groups. As with other cyclopropanes, ring strain, ring tension results in a relatively unstable compound. 1,2-Dimethylcyclopropane is 1 of 10 structural isomers (cycloalkanes and aliphatic alkenes) which share the general formula of C5H10, CH, the others being cyclopentane, methylcyclobutane, 1,1-dimethylcyclopropane, ethylcyclopropane, 1-pentene, 2-pentene, 2-methyl-1-butene, 3-methyl-1-butene, and 2-Methyl-2-butene, 2-methyl-2-butene. See also * Alkyl cycloalkane References {{DEFAULTSORT:Dimethylcyclopropane, 1, 2- Cyclopropanes Hydrocarbons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C5H10
C5H10 is the molecular formula of 13 hydrocarbon isomers (represented by their CAS numbers on the chart). They can be divided into cycloalkanes and alkenes. Cycloalkanes * Cyclopentane (CAS 287-92-3) * Methylcyclobutane (CAS 598-61-8) * Cyclopropanes ** Ethylcyclopropane (CAS 1191-96-4) ** 1,1-Dimethylcyclopropane (CAS 1630-94-0) ** (''R'',''R'')- 1,2-dimethylcyclopropane or (1''R''-''trans'')-1,2-dimethylcyclopropane (CAS 20520-64-3) ** (''S'',''S'')- 1,2-Dimethylcyclopropane or (1''S''-''trans'')-1,2-dimethylcyclopropane (CAS 38447-23-3) ** (''R'',''S'')-1,2-Dimethylcyclopropane or ''cis''-1,2-dimethylcyclopropane (CAS 930-18-7) Alkenes * Pentenes ** 1-Pentene (CAS 109-67-1) ** ''cis''-2-Pentene (CAS 627-20-3) ** ''trans''-2-pentene (CAS 646-04-8) *Butene Butene, also known as butylene, is an alkene with the formula . The word ''butene'' may refer to any of the individual compounds. They are colourless gases that are present in crude oil as a minor constituent in quanti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkyl Cycloalkane
Alkyl cycloalkanes are chemical compounds with an alkyl group with a single ring of carbons to which hydrogens are attached according to the formula :CnH2n. They are named analogously to their normal alkane counterpart of the same carbon count: methylcyclopropane, methylcyclobutane, methylcyclopentane, methylcyclohexane, etc. Methylcycloalkanes are classed into compounds with small, normal and bigger cycloalkanes, where cyclopropane and cyclobutane are the small ones, cyclopentane, cyclohexane, cycloheptane are the normal ones and the rest are the bigger ones. __TOC__ Nomenclature The naming of polycyclic alkanes is more complex, with the base name indicating the number of carbons in the ring system, a prefix indicating the number of rings (e.g., "bicyclo"), and a numeric prefix before that indicating the number of carbons in each part of each ring, exclusive of vertices. For instance, a bicyclooctane which consists of a six-member ring and a four-member ring, which share two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2-Methyl-2-butene
2-Methyl-2-butene, 2m2b, 2-methylbut-2-ene, beta-isoamylene, or trimethylethylene is an alkene hydrocarbon with the molecular formula C5H10. Used as a free radical scavenger in trichloromethane (chloroform) and dichloromethane (methylene chloride). It is also used to scavenge hypochlorous acid (HOCl) in the Pinnick oxidation. John Snow, the English physician, experimented with it in the 1840s as an anesthetic, but stopped using it for unknown reasons. As a crucial fact, it is a flammable material, an irritant, can result in health hazards and environmental hazards. See also *Pentene Pentenes are alkenes with the chemical formula . Each molecule contains one double bond within its molecular structure. Six different compounds are in this class, differing from each other by whether the carbon atoms are attached linearly or in ... References Hydrocarbons Alkenes {{hydrocarbon-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2-pentene
Pentenes are alkenes with the chemical formula . Each molecule contains one double bond within its molecular structure. Six different compounds are in this class, differing from each other by whether the carbon atoms are attached linearly or in a branched structure and whether the double bond has a ''cis'' or ''trans'' form. Straight-chain isomers 1-Pentene is an alpha-olefin. Most often, 1-pentene is made as a byproduct of catalytic or thermal cracking of petroleum or during the production of ethylene and propylene via thermal cracking of hydrocarbon fractions. As of 2010s, the only commercial manufacturer of 1-pentene was Sasol Ltd., where it is separated from crude by the Fischer-Tropsch process. 2-Pentene has two geometric isomers: ''cis''-2-pentene and ''trans''-2-pentene. ''Cis''-2-Pentene is used in olefin metathesis. Branched-chain isomers The branched isomers are 2-methylbut-1-ene, 3-methylbut-1-ene (isopentene), and 2-methylbut-2-ene (isoamylene). Isoamylene is o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclopropane
Cyclopropane is the cycloalkane with the molecular formula (CH2)3, consisting of three methylene groups (CH2) linked to each other to form a triangular ring. The small size of the ring creates substantial ring strain in the structure. Cyclopropane itself is mainly of theoretical interest but many of its derivatives - cyclopropanes - are of commercial or biological significance. Cyclopropane was used as a clinical inhalational anesthetic from the 1930s through the 1980s. The substance's high flammability poses a risk of fire and explosions in operating rooms due to its tendency to accumulate in confined spaces, as its density is higher than that of air. History Cyclopropane was discovered in 1881 by August Freund, who also proposed the correct structure for the substance in his first paper. Freund treated 1,3-Dibromopropane, 1,3-dibromopropane with sodium, causing an intramolecular Wurtz reaction leading directly to cyclopropane. The yield of the reaction was improved by Gustavson ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyclopentane
Cyclopentane (also called C pentane) is a highly flammable alicyclic compound, alicyclic hydrocarbon with chemical formula C5H10, C5H10 and CAS number 287-92-3, consisting of a ring of five carbon atoms each bonded with two hydrogen atoms above and below the plane. It is a colorless liquid with a petrol-like odor. Its freezing point is −94 °C and its boiling point is 49 °C. Cyclopentane is in the class of cycloalkanes, being alkanes that have one or more carbon rings. It is formed by cracking (chemistry), cracking cyclohexane in the presence of alumina at a high temperature and pressure. It was first prepared in 1893 by the German chemist Johannes Wislicenus. Production, occurrence and use Cycloalkanes are formed by catalytic reforming. For example, when passed over a hot platinum surface, 2-Methylbutane, 2-methylbutane converts into cyclopentane. Cyclopentane is principally used as a blowing agent in the manufacture of polyurethane foam, polyurethane insulating foam, replaci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
