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The prefixes sec (from "secondary") and tert (from "tertiary") refer to the number of additional side chains (or carbons) connected to the first butyl carbon. The prefix "iso" or "iso" means "isolated" while the prefix 'n-' stands for "normal". Butan-2-yl (sec-butyl) group is chiral. The carbon atom at position 2 is a stereocenter.
The terms sec and tert are considered obsolete and should only be used for unsubstituted sec-butoxy, sec-butyl [26] [27] or tert-butyl groups. [ 28 ] [ 27 ] There are various spellings such as "sec-butyl", "s-butyl", "sBu" or "bus" which are also considered obsolete.
A common method for preparing isobutyl acetate is Fischer esterification, where precursors isobutyl alcohol and acetic acid are heated in the presence of a strong acid. Isobutyl acetate has three isomers: n-butyl acetate, tert-butyl acetate, and sec-butyl acetate, which are also common solvents.
Butanol (also called butyl alcohol) is a four-carbon alcohol with a formula of C 4 H 9 O H, which occurs in five isomeric structures (four structural isomers), from a straight-chain primary alcohol to a branched-chain tertiary alcohol; [1] all are a butyl or isobutyl group linked to a hydroxyl group (sometimes represented as BuOH, sec-BuOH, i-BuOH, and t-BuOH).
1-propanol, 1-butanol, and isobutyl alcohol for use as a solvent and precursor to solvents; C6–C11 alcohols used for plasticizers, e.g. in polyvinylchloride; fatty alcohol (C12–C18), precursors to detergents; Methanol is the most common industrial alcohol, with about 12 million tons/y produced in 1980.
sec-Butyl acetate, or s-butyl acetate, is an ester commonly used as a solvent in lacquers and enamels, where it is used in the production of acyclic polymers, vinyl resins, and nitrocellulose. [3] It is a clear flammable liquid with a sweet smell.
The side chains are: an ethyl- at carbon 4, an ethyl- at carbon 8, and a butyl- at carbon 12. Note: the −O−CH 3 at carbon atom 15 is not a side chain, but it is a methoxy functional group. There are two ethyl- groups. They are combined to create, 4,8-diethyl. The side chains are grouped like this: 12-butyl-4,8-diethyl.
Isobutylamine is an organic chemical compound (specifically, an amine) with the formula (CH 3) 2 CHCH 2 NH 2, and occurs as a colorless liquid. [1] [2] Isobutylamine is one of the four isomeric amines of butane, the others being n-butylamine, sec-butylamine and tert-butylamine.