Radicofunctional names

Cyclic ethers are named either as heterocyclic compounds or by specialist rules of heterocyclic nomenclature. Radicofunctional names are formed by citing the names of the radicals R and R followed by the word ether. Thus methoxyethane becomes ethyl methyl ether and ethoxyethane becomes diethyl ether. 

Simple ethers are frequently given common radicofunctional names. 

These word-separated names sometimes are called radicofunctional names. 

For some simple halogen derivatives, however, radicofunctional names are still widely in use. 

Table 1.9 Functional Class Names Used in Radicofunctional Nomenclature 1.22...

Radicofunctional nomenclature finds some use in naming ethers, sulfides, sulfoxides, sulfones, selenium analogs of the preceding three sulfur compounds, and azides. 

Formula Class name Prefix Suffix Radicofunctional form... 

It is possible to regard radicofunctional nomenclature, in which the functional class narrie of a compound (c.g. alcohol, ketone, etc.) is cited after the names of the attached radicals, as involving an additive procedure (example 146). This type of nomenclature is gradually falling out of use in favor of the substitutive equivalent [for 146 the substitutive name would be l-(3-pyridyl)propan-l-one]. 

Common names for simple haloalkanes are accepted by the IUPAC => alkyl halides (radicofunctional nomenclature). 

Radicofunctional Nomenclature. The procedures of radicofunctional nomenclature are identical with those of substitutive nomenclature except that suffixes are never used. Instead, the functional class name (Table 1.9) of the compound is expressed as one word and the remainder of the molecule as another that precedes the class name. When the functional class name refers to a characteristic group that is bivalent, the two radicals attached to it are each named, and when different, they are written as separate words arranged in alphabetical order. When a compound contains more than one kind of group listed in Table 1.9, that kind is cited as the functional group or class name that occurs higher in the table, all others being expressed as prefixes. 

Polyketones in which two or more contiguous carbonyl groups have rings attached at each end may be named (1) by the radicofunctional method or (2) by substitutive nomenclature. For example,... 

Formula Parent name Substitutive prefix Radicofunctional ending... 

The former names arc preferred, but the latter are allowed. The variant to be used in any particular case depends on the circumstances. Thus, sulfuryl is u.sed in inorganic radicofunctional nomenclature and sulfonyl is used in organic substitutive nomenclature. (That is, organic chemists tend to speak of methanesulfonyl chloride, MeSO CI. while inorganic chemists speak of sulfuryl chloride. 

Functional Class Names (Formerly Radicofunctional Nomenclature)... 

Substituent groups ( radicals ) derived from acids and certain derivatives thereof by removal of -OH from the functional group are generally called acyl groups and individually named by transforming the ending... ic acid to. ..yl or. ..oyl and. ..carboxylic acid to. ..carbonyl. The names thus formed can also be used in radicofunctional (functional class) nomenclature. 

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