Common Names of Carboxylic acids E. For historical reasons having to do with the fact that many carboxylic acids were among the first organic compounds to be isolated and purified, IUPAC rule make allowance for a large number of Well-entrenched common names
Organic Chemistry Organic Chemistry Xiamen Xiamen University University Common Names of Carboxylic acids For historical reasons having to do with the fact that many carboxylic acids were among the first organic compounds to be isolated and purified, IUPAC rule make allowance for a large number of well-entrenched common names
o Some Common Names of Carboxylic Acids 三| Structure Common name HCOOH Formic acid 三CH2COOH Acetic acid CH.CHCHCOOH Butyric acid HOOCCOOH Oxalic acid HOOCCH2COOH Malonic acid CH=CHCOOH Acrylic acid HOOCCH=CHCOOH(Cis) Maleic acid HOOCCH=CHCOOH(trans Fumaric acid DC.HCOOH Benzoic acid 0C6H4(C0H)2 Phthalic acid
Organic Chemistry Organic Chemistry Xiamen Xiamen University University Some Common Names of Carboxylic Acids C 6 H 5COOH Benzoic acid CH 2=CHCOOH Acrylic acid HOOCCOOH Oxalic acid o-C 6 H 4(COOH) 2 Phthalic acid HOOCCH=CHCOOH (trans) Fumaric acid HOOCCH=CHCOOH (cis) Maleic acid HOOCCH 2COOH Malonic acid CH 3CH 2CH 2COOH Butyric acid CH 3COOH Acetic acid HCOOH Formic acid Structure Common name
102羧酸的物理性质 Physical Properties of Carboxylic Acids
Organic Chemistry Organic Chemistry Xiamen Xiamen University University 10.2 羧 酸 的物理性质 Physical Properties of Carboxylic Acids
9 Physical Constants of Some Carboxylic Acids Structure mp.(℃)|b.p.(℃) HCOOH 8.4 101 C,COOH 16.6 118 C HCHCOOH 22 141 FCHCOOH 35 n乙 165 BrCHCooH 50 208 HOCH-COOH 80 Decomposes ①D C Ha=CHCOOH 13 141 H-COOH 6115 1224 249 ⑨D HOOCCOOH 1895 Decomposes
Organic Chemistry Organic Chemistry Xiamen Xiamen University University Physical Constants of Some Carboxylic Acids HOOCCOOH 189.5 Decomposes C 6 H 5COOH 122.4 249 CH 2=CHCOOH 13 141 HOCH 80 Decomposes 2COOH BrCH 2COOH 50 208 FCH 2COOH 35.2 165 CH 3CH 2COOH -22 141 CH 3COOH 16.6 118 HCOOH 8.4 101 Structure m.p. ( ) b.p. ( )
物理性质 低级脂肪酸——液体,溶于水 三中级脂肪酸——液体,部分溶于水 高级脂肪酸一—固体,不溶于水 ●u大多数羧酸在固态和液态时以二缔和体形式 存在,bp比相应的醇高 H—0 H2C—C C—CH O—H----0 乙酸的二缔和体
Organic Chemistry Organic Chemistry Xiamen Xiamen University University 物理性质 低级脂肪酸 —— 液体 溶于水 中级脂肪酸 ——液体 部分溶于水 高级脂肪酸 ——固体 不溶于水 大多数羧酸在固态和液态时以二缔和体形式 存在 bp比相应的醇高 H 3C C O O H C CH 3 O H O 乙酸的二缔和体