Tert- prefix

Italicized prefixes such as sec and tert are ignored when alphabetizing except when they are compared with each other tert Butyl precedes isobutyl and sec butyl precedes tert butyl... 

Note the usage of the prefixes iso-, neo-, sec-, and tert-, and note when italics are employed. Italicized prefixes are never involved in alphabetization, except among themselves thus 5-ec-butyl would precede isobutyl, isohexyl would precede isopropyl, and 5-ec-butyl would precede rert-butyl. 

Structural prefixes should be italicized and connected with the chemical formula by a hyphen cis-, trans-, anti-, syn-, cyclo-, catena-, o- or ortho-, m- or meta-, p- or para-, sec- (secondary), tert-(tertiary), v- (vicinal), meso-, as- for asymmetrical, and 3- for symmetrical. 

Alkyl peroxyesters are commonly named like their nonperoxidic counterparts, except for incorporation of the peroxy- prefix. Trivial names are also commonly used, eg, tert-huty peracetate. Alkyl peroxyesters derived from di- and polybasic peroxyacids use 00- or O- when required to locate groups, eg, 00-tert-huty 0-isopropyl monoperoxycarbonate and 00-tert-huty 0-hydrogen monoperoxymaleate. Descriptions of alkyl peroxyesters have been given in the chemical hterature (1,4—6,19,20,44,168,213). 

One further word about naming alkyl groups the prefixes sec- (for secondary) and tert- (for tertiary) used for the C4 alkyl groups in Figure 3.3 refer to the number of other carbon atoms attached to the branching carbon atom. There are four possibilities primary (1°), secondary (2°), tertiary (3°), and quaternary (4°). 

When writing an alkane name, the nonhyphenated prefix iso- is considered part of the alkyl-group name for alphabetizing purposes, but the hyphenated and italicized prefixes sec- and tert- are not. Thus, isopropyl and isobutyl are listed alphabetically under i, but sec-butyl and ferf-butyl are listed under b. 

It should be noted that italicised hyphenated prefixes which indicate structure, such as cis-. o-, m-, tert-, mixo-, N-. 0-, etc., have been ignored during the alpha-sorting routine used on this index and the group-lists, while the roman character structural prefixes iso and neo, and roman multiplying prefixes such as di, tris, tetra and hexakis, have been included in the indexing procedure. 

When constructing a name, detachable prefixes are cited in front of the name of the parent hydride in alphabetical order. The names are alphabetised by considering the first letter of each name m in methyl, b in butyl, d in 1,2-dimethylpropyl. In retained names, the first non-italicised letter is considered i in isobutyl, n in neopentyl, but b in tert-huiy. ... 

When a compound has several substituents, list the substituents in alphabetical order disregarding the presence of N, O or S prefixes and the descriptors sec-, tert-, cis- and trans- but see rule 2.5 below. 

The prefixes sec and tert are really short for secondary and tertiary, terms that refer to the carbon atom that attaches these groups to the rest of the molecular structure. 

The prefixes sec- and tert- before the name of the group indicate that the H was removed from a secondary or tertiary C, respectively. A secondary C has bonds to two other C s, a tertiary to three other C s, and a primary either to three H s or to two H s and one C. 

The prefixes sec- and tert- refer to the degree of substitution at the branching carbon atom. 

The prefix iso- is part of the words propyl and butyl, forming a single word isopropyl and isobutyl. The prefixes sec- and tert- are separated from the word butyl by a hyphen sec-butyl and tert-butyl. 

The prefix sec- is short for secondary. A sec-butyl group is formed by removal of a 2° H. The prefix tert- is short for tertiary. A ferf-butyl group is formed by removal of a 3° H. 

Assign the name and position number to each substituent. Arrange the substituents in alphabetical order. Hyphenated prefixes, such as tert- and sec-, are not used in alphabetization of the substituents. 

Step 5. Place the position numbers and names of the substituent groups, in alphabetical order, before the root name. In alphabetizing, ignore prefixes like sec-, tert-, di, tri, etc., but include iso and cyclo. Always include a position number for each substituent, regardless of redundancies. 

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