Langimage
English

o-aminobenzoyl

|o-ami-no-ben-zoyl|

C2

🇺🇸

/oʊ-əˈmiːnoʊˌbɛnzoɪl/

🇬🇧

/əʊ-əˈmiːnəʊˌbɛn.zɔɪl/

ortho-amino benzoyl substituent

Etymology
Etymology Information

'o-aminobenzoyl' is formed from the combining form 'o-' (short for 'ortho-') plus 'aminobenzoyl', where 'amino-' comes from Latinized Greek 'amine' (ultimately related to 'ammonia') meaning 'containing NH2', and 'benzoyl' is the acyl radical name built from 'benzoin/benzoic' referring to benzene-derived acyl groups.

Historical Evolution

'benzoyl' was coined in the early 19th century in organic chemistry from 'benzoin' and 'benzoic' (itself from French/Latin adaptations of names for benzoin resin). 'aminobenzoyl' arose by combining the prefix 'amino-' with 'benzoyl'; adding the locational prefix 'o-' (ortho-) produced 'o-aminobenzoyl' in chemical nomenclature to indicate the 1,2-relationship on the benzene ring.

Meaning Changes

Initially, component parts referred to resin-derived or basic chemical units ('benzoin', 'benzoic'); over time the combined term 'o-aminobenzoyl' became a precise systematic name for a specific acyl substituent (the ortho-position amino-substituted benzoyl group).

Meanings by Part of Speech

Noun 1

a chemical acyl group derived from o-aminobenzoic acid, with the formula C6H4(NH2)CO–; the substituent in which an amino group is at the ortho position on a benzoyl ring.

The synthesis produced a compound bearing an o-aminobenzoyl group on the aromatic ring.

Synonyms

ortho-aminobenzoylo-aminobenzoyl group

Adjective 1

describing a molecule or substituent that contains or is derived from an o-aminobenzoyl group (used attributively, e.g., o-aminobenzoyl chloride).

o-Aminobenzoyl chloride is used as an intermediate in the preparation of dyes.

Synonyms

ortho-aminobenzoyl

Last updated: 2025/10/10 05:39