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1,2-Dimethylcyclopropane is a cycloalkane consisting of a cyclopropane ring substituted with two methyl groups attached to adjacent carbon atoms. [1] It has three stereoisomers , one cis -isomer and a pair of trans - enantiomers , which differ depending on the orientation of the two methyl groups.
[2] As of early 1990s, it was present in American [3] and European [4] gasoline in small amounts, and by 2011 its share in US gasoline varied between 1 and 3%. [5] It has a research octane number of 103 and motor octane number of 95. [6] The C 6 core of methylcyclopentane is not perfectly planar and can pucker to alleviate stress in its ...
Cyclopentane is a minor component of automobile fuel, with its share in US gasoline varying between 0.2 and 1.6% in early 1990s [8] and 0.1 to 1.7% in 2011. [9] Its research and motor octane numbers are reported as 101 or 103 and 85 or 86 respectively. [10] [11]
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GP is an organophosphate nerve agent of the G-series, [1] with a relatively slow rate of hydrolysis, and thus high stability and persistence in the environment. [ 2 ] References
General structure of 1,2-, 1,3-, and 1,4-dicarbonyls. In organic chemistry, a dicarbonyl is a molecule containing two carbonyl (C=O) groups.Although this term could refer to any organic compound containing two carbonyl groups, it is used more specifically to describe molecules in which both carbonyls are in close enough proximity that their reactivity is changed, such as 1,2-, 1,3-, and 1,4 ...
For 2,2-dimethylpentane they measured a density of 0.6737 at 20 °C with a rate of change Δd/ΔT of 0.000855. The density and boiling are the lowest of the isomers of heptane. The dielectric constant is 1.915, the lowest of the heptane isomers. The critical temperature is 247.7 °C and critical pressure 28.4 atmospheres.
The pinacol–pinacolone rearrangement is a method for converting a 1,2-diol to a carbonyl compound in organic chemistry. The 1,2-rearrangement takes place under acidic conditions. The name of the rearrangement reaction comes from the rearrangement of pinacol to pinacolone. [1]
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