Radicofunctional nomenclature

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. 

Radicofunctional nomenclature can be used when a carbonyl group is attached directly to carbon atoms in two ring systems and no other substituent is present having priority for citation. 

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). 

In common radicofunctional nomenclature alcohols are called alkyl alcohols such as methyl alcohol, ethyl alcohol, isopropyl alcohol, and so on. 

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. 

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)... 

Nitriles derived from trivially named carboxylic acids traditionally have the ending. ..onitrile acetonitrile, propiononitrile, butyronitrile, etc. Moreover, radicofunctional nomenclature is (still) also customary here, leading to names of the type. ..yl cyanides. 

Radicofunctional nomenclature is no longer used except for simple aliphatic and alicyclic alcohols, e.g. methyl, pentyl, cyclohexyl alcohol, etc., and could be dispensed with here too. 

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