Name these CH OH CH3--CH-CH2OH CH3--CH-CH2CH3 2-methyl-1-propanol 2-butanol CH3 OH CH3-C-OH CH Br CHa 2-methyl-2-propanol 3-bromo-3-methylcyclohexanol > Chapter 10
Chapter 10 6 Name these: CH3 CH CH3 CH2OH CH3 C CH3 CH3 OH CH3 CH OH CH2CH3 2-methyl-1-propanol 2-methyl-2-propanol 2-butanol OH Br CH3 3-bromo-3-methylcyclohexanol =>
Unsaturated alcohols Hydroxyl group takes precedence. Assign that carbon the lowest number Use alkene or alkyne name OH CH2=CHCH2CHCH3 4-penten-2-ol(old) pent-4-ene-2-ol (1997 revision of IUPAc rules Chapter 10
Chapter 10 7 Unsaturated Alcohols • Hydroxyl group takes precedence. Assign that carbon the lowest number. • Use alkene or alkyne name. 4-penten-2-ol (old) pent-4-ene-2-ol (1997 revision of IUPAC rules) => CH2 CHCH2 CHCH3 OH
Naming priority Acids Alkenes Esters Alkynes Aldehydes Alkanes Ketones · Ethers ·A| cools Halides Amines => Chapter 10
Chapter 10 8 Naming Priority • Acids • Esters • Aldehydes • Ketones • Alcohols • Amines • Alkenes • Alkynes • Alkanes • Ethers • Halides =>
Hydroxy substituent When-OH is part of a higher priority class of compound, it is named as hydroxy Example OH CH CHCH, COOH also known as GHB 4-hydroxybutanoic acid Chapter 10
Chapter 10 9 Hydroxy Substituent • When -OH is part of a higher priority class of compound, it is named as hydroxy. • Example: CH2 CH2 CH2 COOH OH 4-hydroxybutanoic acid also known as GHB =>
Common names Alcohol can be named as alkyl alcohol Useful only for small alkyl groups Examples: CH OH CH3-CH—CH2OH CH3-CH-CH2 CH3 isobutyl alcohol sec-butyl alcohol Chapter 10 10
Chapter 10 10 Common Names • Alcohol can be named as alkyl alcohol. • Useful only for small alkyl groups. • Examples: CH3 CH CH3 CH2OH CH3 CH OH CH2CH3 isobutyl alcohol sec-butyl alcohol =>