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Alkynes group, nomenclature

Benzene derivatives. Tbe nomenclature is a combination of the lUPAC system and traditional names. Many of the derivatives are named by the substituent group appearing as the prefbt. These may be considered a subclass of the aliphatic-aromatic hydrocarbon family, which contains both aliphatic and aromatic units in its structures. Thus, alkylbenzenes are made up of a benzene ring and alkane units alkenylbenzenes are Composed of a benzene ring and alkene units and alkynylbenzenes comprise a benzene ring and alkyne units. Examples of alkylbenzenes include... [Pg.310]

The lUPAC nomenclature of alkynes is similar to that for alkenes, except the -ane ending is replaced with -yne. The chain is numbered from the end closest to the triple bond. When additional functional groups are present, the suffixes are combined. [Pg.108]

IUPAC nomenclature names ethers as alkoxy alkanes, alkoxy alkenes, or alkoxy alkynes. The group in the chain that has the greatest number of carbon atoms is designated the parent compound. In the case of aromatic ethers, the benzene ring is the parent compound. [Pg.97]

Common Names The common names of alkynes describe them as derivatives of acetylene. Most alkynes can be named as a molecule of acetylene with one or two alkyl substituents. This nomenclature is like the common nomenclature for ethers, where we name the two alkyl groups bonded to oxygen. [Pg.394]

The simplest alkyne, HC = CH, named in the lUPAC system as ethyne, is more often called acetylene, its common name. The two-carbon alkyl group derived from acetylene is called an ethynyl group (HC=C-). Examples of alkyne nomenclature are shown in Figure 11.1. [Pg.403]

In common nomenclature, alkynes are named as substituted acetylenes. The common name is obtained by citing the names of the alkyl groups, in alphabetical order, that have replaced the hydrogens of acetylene. Acetylene is an unfortunate common name for the smallest alkyne because its ene ending is characteristic of a double bond rather than a triple bond. [Pg.239]

In contrast to the relatively unreactive alkanes, alkenes and alkynes are chemically reactive because they have double and triple carbon-carbon bonds as functional groups. In the lUPAC nomenclature the names of alkenes end with the suffix -ene and the position of the double bond is labeled by number of the C-atom on which this double bond begins. In analogy with alkanes with branched chains, the root of the word is the name of the longest chain of C-atoms and the atom numbering is arranged... [Pg.39]

Nomenclature for aldehydes and ketones. Nomenclature of difunctional molecules containing a carbonyl group and an alkene or alkyne, or two carbonyl groups. [Pg.770]

The lUPAC nomenclature is based on the longest continuous chain (alkane, alkene, or alkyne based) that contains the carboxyl carbon (the -COOH unit). As with aldehydes, the carbon of the COOH group is always at one terminus of the chain and must receive the lowest possible number (1), which is omitted from the name. The suffix for carboxylic acids is oic acid, with the word acid separated from the first part of the name. As with aldehydes and ketones, the carboxyl unit is higher in priority than an alkene or alkyne. Compound 38 is an eight-carbon acid with an alkane backbone, so it is octanoic acid (note the short notation for the carboxyl group). Substituents are numbered relative to the carbonyl carbon of the COOH unit, so 39 is 2,2-dimethyl-5-phenyloctanoic acid. In a similar manner, 40 is named 16-chloro-4-ethylheptadecanoic acid. [Pg.781]

In addition to lUPAC nomenclature, chemists use common names for many alkynes. Ethyne (H—C=C—H) is called acetylene, while larger alkynes have common names that identify the alkyl groups attached to the parent acetylene ... [Pg.458]

In lUPAC nomenclature, a hydrocarbon containing both double and triple bonds is called an alkenyne. The chain is numbered starting from the end closest to either of the functional groups. When a double bond and a triple bond are at equidistant positions fiom either terminus, the double bond is given the lower number. Alkynes incorporating the hydroxy function are named alkynols. Note the omission of the final e of -ene in -enyne and of -yne in -ynol. The OH group takes precedence over both double and triple bonds in the numbering of a chain. [Pg.542]


See other pages where Alkynes group, nomenclature is mentioned: [Pg.1028]    [Pg.790]    [Pg.347]    [Pg.5]    [Pg.37]    [Pg.301]    [Pg.201]    [Pg.216]    [Pg.130]    [Pg.727]    [Pg.775]    [Pg.800]    [Pg.108]    [Pg.113]   


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Alkynes group

Alkynes nomenclature

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