Hydrocarbons: IUPAC names There are common names for many organic compounds. For example: methyl alcohol, acetylene, acetic acid, etc. Yet, there are an infinite number of possible organic structures. Thus, it is important to name them in a systematic way. The purpose of IUPAC names is to provide a set of rules so that the structure of a compound can be discerned from its name, and vise-versa. Hydrocarbons (C and H only) Saturated Unsaturated Aromatic All single bonds At least one double or triple bond Contains a benzene ring Formula: C n H 2 n +2 Alkene • 1 double bond C=C Prefixes for # of carbons • Formula: C n H 2 n 1 meth- 6 hex- Alkynes 2 eth- 7 hept- • 1 triple bond C ≡ C 3 prop- 8 oct- • Formula: C n H 2 n-2 4 but- 9 non- -dienes 5 pent- 10 dec- • 2 double bonds C=C=C • not necessarily in a row • cyclo = ring -trienes • n = normal (straight chain) – not IUPAC • 3 double bonds C=C=C=C • iso = branched – not IUPAC • not necessarily in a row Symbol: C C
This is the end of the preview. Sign up
access the rest of the document.
This note was uploaded on 04/12/2011 for the course CHEM 1010 taught by Professor Marshall during the Spring '11 term at North Texas.