林 Look Back to the Nomenclature IUPAC ST A&F if the carboxyl group is attached to a ring,name the ring compound and add the suffix -carboxylic acid 2 1COOH H. COOH 2-Cyclohexene- trans-1,3-Cyclopentane- carboxylic acid dicarboxylic acid
Look Back to the Nomenclature - IUPAC if the carboxyl group is attached to a ring, name the ring compound and add the suffix -carboxylic acid carboxylic acid 3 2 1 2-Cyclohexenecarboxylic acid trans-1,3-Cyclopentane- dicarboxylic acid CO O H HO O C CO O H
Look Back to the 衣林 Nomenclature IUPAC benzoic acid is the simplest aromatic carboxylic acid use numbers to show the location of substituents COOH COOH COOH COOH OH COOH COOH Benzoic 2-Hydroxybenzoic 1,2-Benzene- 1,4-Benzene- acid acid dicarboxylic acid dicarboxylic acid (Salicylic acid) (Phthalic acid) (Terephthalic acid)
Look Back to the Nomenclature - IUPAC benzoic acid is the simplest aromatic carboxylic acid use numbers to show the location of substituents Benzoic acid 2-Hydroxybenzoic acid (Salicylic acid) C OOH C OOH OH 1,2-Benzenedicarboxylic acid (Phthalic acid) 1,4-Benzenedicarboxylic acid (Terephthalic acid) CO O H CO O H CO O H CO O H
东林 Look Back to the Nomenclature IUPAC when common names are used, the letters a,B,Y,δ，etc.are often used to locate substituents 5 1 OH H2N、 OH NH2 4-Aminobutanoic acid 2-Aminopropanoic acid (Y-Aminobutyric acid; (a-Aminopropionic acid; GABA) alanine)
Look Back to the Nomenclature - IUPAC when common names are used, the letters α, β, γ, δ, etc. are often used to locate substituents alanine) ( γ-A mi n o b utyr i c acid; ( α-A m i n o p r o pio n i c acid; GABA ) 4-A min o b u tan o i c acid 2-A min o p ro p a n oic acid 4 3 2 5 H 2 N OH O OH O NH 2 OH O α β γ δ 1
More examples CH CH,CH,-COOH Butyric acid（酪酸)：(from Latin butyrum:butter):gives rancid butter its characteristic smell. OH Lactic acid（乳酸)：(from CH CH-COOH Latin lactim:milk):gives sour milk its characteristic taste. CH3(CH2)16-COOH Stearic acid(硬脂酸)：one of the main components of animal fat (saturated fat). OH Citric acid(柠檬酸)gives its characteristic flavor to lemons and HOOC-CH,-C-CH,COOH other citric fruits.Used widely as preservative (antioxidant)and as an COOH additive for tartness
More examples Butyric acid（酪酸）: (from Latin butyrum: butter): gives rancid butter its characteristic smell. Lactic acid （乳酸） : (from Latin lactim: milk): gives sour milk its characteristic taste. Stearic acid（硬脂酸）: one of the main components of animal fat (saturated fat). Citric acid（柠檬酸） gives its characteristic flavor to lemons and other citric fruits. Used widely as preservative (antioxidant) and as an additive for tartness
行十十十十十 ST A&F U acid halide acid anhydride ester 酰卤 酸酐 酯 酰胺 H 1 amide 2°amide 3°amide
R C O X R C O O C O R R C O O R' acid halide acid anhydride ester R C O N H H R C O N R' H R C O N R' R" 1° amide 2° amide 3° amide 酰卤 酸酐 酯 酰胺