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Print/export Download as PDF; Printable version; In other projects ... 3-Ethyl-4-methylhexane; Pentane. Isomers where pentane is the longest chain Tetramethyl
The longest possible main alkane chain is used; therefore 3-ethyl-4-methylhexane instead of 2,3-diethylpentane, even though these describe equivalent structures. The di-, tri- etc. prefixes are ignored for the purpose of alphabetical ordering of side chains (e.g. 3-ethyl-2,4-dimethylpentane, not 2,4-dimethyl-3-ethylpentane).
Print/export Download as PDF; Printable version; In other projects Wikidata item; ... 2-Methylhexane; 3-Methylhexane This page was last edited on 16 May 2022 ...
3-Methylhexane is a branched hydrocarbon with two enantiomers. [2] It is one of the isomers of heptane. The molecule is chiral, and is one of the two isomers of heptane to have this property, the other being its structural isomer 2,3-dimethylpentane. The enantiomers are (R)-3-methylhexane [3] and (S)-3-methylhexane. [4]
Bromoform was discovered in 1832 by Löwig who distilled a mixture of bromal and potassium hydroxide, as analogous to preparation of chloroform from chloral. [5]Bromoform can be prepared by the haloform reaction using acetone and sodium hypobromite, by the electrolysis of potassium bromide in ethanol, or by treating chloroform with aluminium bromide.
Tetraethoxymethane can be used as a solvent and for the alkylation of CH-acidic compounds (e.g. phenols and carboxylic acids).In addition, it reacts with amines, enol ethers and sulfonamides, [12] whereby spiro compounds can also be obtained.
Ethylvanillin can be methylate to 4-ethoxy-3-methoxybenzladehyde. The 4-ethoxy-3-methoxybenzaldehyde is then subjected to a Bayer-Villiger oxidation with peracetic acid and acetic acid to yield 4-ethoxy-3-methoxyphenol. The 4-ethoxy-3-methoxyphenol is methylated to yield 2,4-dimethoxy-1-ethoxybenzene. The 2,4-dimethoxy-1-ethoxybenzene is ...
H 2 C=CH 2 + HBr → H 3 C-CH 2 Br. Bromoethane is inexpensive and would rarely be prepared in the laboratory. A laboratory synthesis includes reacting ethanol with a mixture of hydrobromic and sulfuric acids. An alternate route involves refluxing ethanol with phosphorus and bromine; phosphorus tribromide is generated in situ. [4]