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The branching in 2-ethyl-1-butanol makes it harder to crystallize due to packing disruption, which results in a very low freezing point. Esters of 2-ethyl-1-butanol are similarly effected and it therefore finds application as a feedstock in the production of plasticizers and lubricants, where its presence helps reduce viscosity and lower freezing points.
Halogens give initially 2-halo derivatives followed by 2,5-dihalothiophenes; perhalogenation is easily accomplished to give C 4 X 4 S (X = Cl, Br, I). [20] Thiophene brominates 10 7 times faster than does benzene. Acetylation occurs readily to give 2-acetylthiophene, precursor to thiophene-2-carboxylic acid and thiophene-2-acetic acid. [9]
Diacetylene has been identified in the atmosphere of Titan and in the protoplanetary nebula CRL 618 by its characteristic vibrational spectrum.It is proposed to arise by a reaction between acetylene and the ethynyl radical (C 2 H), which is produced when acetylene undergoes photolysis.
Branched alkanes are more thermodynamically stable than their linear (or less branched) isomers. For example, the highly branched 2,2,3,3-tetramethylbutane is about 1.9 kcal/mol more stable than its linear isomer, n-octane. [4]
In organic chemistry, a diethynylbenzene dianion is an anion consisting of two ethynyl anions as substituents on a benzene ring. With the chemical formula C 6 H 4 C 2− 4, three positional isomers are possible, differing in the relative positions of the two substituents around the ring: ortho-diethynylbenzene dianion; meta-diethynylbenzene dianion
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CH 2 =CHCO 2 H Propiolic acid: propynoic acid propargylic acid acetylene carboxylic acid CH≡CCO 2 H Lactic acid: 2-hydroxypropanoic acid milk acid CH 3 CHOHCO 2 H 3-Hydroxypropionic acid: 3-hydroxypropanoic acid hydracrylic acid CH 2 OHCH 2 CO 2 H Glyceric acid: 2,3-dihydroxypropanoic acid CH 2 OHCHOHCO 2 H Pyruvic acid: 2-oxopropanoic acid ...
Isopropyl alcohol (IUPAC name propan-2-ol and also called isopropanol or 2-propanol) is a colorless, flammable, organic compound with a pungent alcoholic odor. [9]Isopropyl alcohol, an organic polar molecule, is miscible in water, ethanol, and chloroform, demonstrating its ability to dissolve a wide range of substances including ethyl cellulose, polyvinyl butyral, oils, alkaloids, and natural ...