2-吡啶甲酸是重要的有机合成中间体。在医药工业中用于制备卡波卡因药物和神经性药物,在神经抑制和局部麻醉方面应用广泛;它也是合成各种2-吡啶甲酸盐的必备原料,其中2-吡啶甲酸铬是人类重要的保健药品,广泛用于人体补铬剂、饲料添加剂及糖尿病治疗等。此外,2-吡啶甲酸还可用于制备除草剂。
化学性质2-吡啶甲酸为白色针状结晶,熔点134-136℃。它易溶于冰乙酸,几乎不溶于乙醚、氯仿和二硫化碳。
用途作为有机合成中间体,2-吡啶甲酸具有广泛的应用价值。
生产2-吡啶甲酸盐的方法如下:将50g 2-甲基吡啶加入2500ml水中,加热搅拌,然后分两批加入90g高锰酸钾。约1小时后再加第二批90g高锰酸钾,并补加500ml水继续加热2至2.5小时,直至紫色消失。冷却后滤出二氧化锰沉淀并用热水洗涤。将滤液减压浓缩,过滤后,浓缩液用浓盐酸酸化至刚果红变酸性后蒸发至干,与250ml 95%乙醇共煮回流1小时。过滤,并将滤饼用95%乙醇提取,合并乙醇滤液及提取液。通入干燥的氯化氢气体,直到晶体开始析出为止。冷却至10℃后,再通入氯化氢气体直至结晶完全。最后,过滤并干燥滤出的吡啶甲酸盐酸盐,得到43-44g(熔点210-212℃)。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-吡啶甲酸甲酯 | methyl pyridine-2-carboxylate | 2459-07-6 | C7H7NO2 | 137.138 |
吡啶-2,6-二甲酸 | 2,6-Pyridinedicarboxylic acid | 499-83-2 | C7H5NO4 | 167.121 |
4-溴吡啶-2-羧酸 | 4-bromo-2-picolinic acid | 30766-03-1 | C6H4BrNO2 | 202.007 |
4-氯-2-吡啶甲酸 | 4-chloropicolinic acid | 5470-22-4 | C6H4ClNO2 | 157.556 |
2-吡啶甲酸乙酯 | ethyl-2-picolinate | 2524-52-9 | C8H9NO2 | 151.165 |
6-羟基吡啶-2-羧酸 | 6-oxo-1,6-dihydropyridine-2-carboxylic acid | 19621-92-2 | C6H5NO3 | 139.111 |
6-氯吡啶-2-羧酸 | 6-chloropicolinic acid | 4684-94-0 | C6H4ClNO2 | 157.556 |
皮考林羧酸 N-氧化物 | 2-pyridinecarboxylic acid N-oxide | 824-40-8 | C6H5NO3 | 139.111 |
—— | pyridine-2-carboxylic acid 2-methoxyethyl ester | 153621-46-6 | C9H11NO3 | 181.191 |
吡啶-2-甲醛 | pyridine-2-carbaldehyde | 1121-60-4 | C6H5NO | 107.112 |
2-吡啶甲醇 | 2-Hydroxymethylpyridine | 586-98-1 | C6H7NO | 109.128 |
—— | 2,2,2-trifluoroethyl picolinate | 93111-30-9 | C8H6F3NO2 | 205.136 |
4,5-二氯吡啶-2-甲酸 | 4,5-dichloro-pyridine-2-carboxylic acid | 73455-13-7 | C6H3Cl2NO2 | 192.001 |
苯基吡啶-2-羧酸酯 | phenyl picolinate | 26838-86-8 | C12H9NO2 | 199.209 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-吡啶甲酸甲酯 | methyl pyridine-2-carboxylate | 2459-07-6 | C7H7NO2 | 137.138 |
—— | Picolinsaeurechlorid | —— | C6H4ClNO2 | 157.556 |
吡啶-2,6-二甲酸 | 2,6-Pyridinedicarboxylic acid | 499-83-2 | C7H5NO4 | 167.121 |
4-碘吡啶-2-羧酸 | 4-iodo-2-nicotinic acid | 405939-79-9 | C6H4INO2 | 249.008 |
4-氟吡啶-2-甲酸 | 4-fluoropyridine-2-carboxylic acid | 886371-78-4 | C6H4FNO2 | 141.102 |
4-氯-2-吡啶甲酸 | 4-chloropicolinic acid | 5470-22-4 | C6H4ClNO2 | 157.556 |
2-吡啶甲酸乙酯 | ethyl-2-picolinate | 2524-52-9 | C8H9NO2 | 151.165 |
6-羟基吡啶-2-羧酸 | 6-oxo-1,6-dihydropyridine-2-carboxylic acid | 19621-92-2 | C6H5NO3 | 139.111 |
皮考林羧酸 N-氧化物 | 2-pyridinecarboxylic acid N-oxide | 824-40-8 | C6H5NO3 | 139.111 |
2-羟基乙基2-吡啶羧酸酯 | 2-hydroxyethyl pyridine-2-carboxylate | 540741-84-2 | C8H9NO3 | 167.164 |
氰基甲基2-吡啶羧酸酯 | cyanomethyl picolinate | 84555-18-0 | C8H6N2O2 | 162.148 |
—— | 2-pyridinecarboxylic acid i-propyl ester | 65395-55-3 | C9H11NO2 | 165.192 |
3-氯-2-吡啶甲酸 | 3-chloropyridine-2-carboxylic acid | 57266-69-0 | C6H4ClNO2 | 157.556 |
3-碘吡啶-2-羧酸 | 3-iodopicolinic acid | 73841-32-4 | C6H4INO2 | 249.008 |
3-羟基-2-吡啶甲酸 | 3-hydroxypicolinic acid | 874-24-8 | C6H5NO3 | 139.111 |
—— | pyridine-2-carboxylic acid 2-methoxyethyl ester | 153621-46-6 | C9H11NO3 | 181.191 |
—— | 3-deuteriopyridine-2-carboxylic acid | —— | C6H5NO2 | 124.103 |
吡啶-2-甲醛 | pyridine-2-carbaldehyde | 1121-60-4 | C6H5NO | 107.112 |
2-吡啶甲醇 | 2-Hydroxymethylpyridine | 586-98-1 | C6H7NO | 109.128 |
吡啶-2-羧酸叔丁酯 | pyridine-2-carboxylic acid t-butyl ester | 79233-72-0 | C10H13NO2 | 179.219 |
Alpha-吡啶甲酸正丁酯 | butyl pyridine-2-carboxylate | 5340-88-5 | C10H13NO2 | 179.219 |
4-碘吡啶-2-甲酸甲酯 | 4-iodopicolinic acid methyl ester | 380381-28-2 | C7H6INO2 | 263.035 |
—— | pyridine-2-carboxylic acid-(2-ethoxy-ethyl ester) | —— | C10H13NO3 | 195.218 |
三甲基硅烷基2-吡啶羧酸酯 | (pyridine-2-carbonyloxy)trimethylsilane | 17881-49-1 | C9H13NO2Si | 195.293 |
4-氯吡啶-2-甲酸甲酯 | 4-Chloro-pyridine-2-carboxylic acid methyl ester | 24484-93-3 | C7H6ClNO2 | 171.583 |
—— | 2,2,2-trifluoroethyl picolinate | 93111-30-9 | C8H6F3NO2 | 205.136 |
—— | Picolinsaeure-pentylester | 71653-41-3 | C11H15NO2 | 193.246 |
—— | 4-methylpentanol picolinoyl ester | 71653-42-4 | C11H15NO2 | 193.246 |
吡啶甲酸己酯 | Picolinsaeure-hexylester | 5394-95-6 | C12H17NO2 | 207.272 |
—— | 4'-chlorobutyl pyridine-2-carboxylate | 1345694-58-7 | C10H12ClNO2 | 213.664 |
吡啶-2-甲酸酐 | pyridine-2-carboxylic anhydride | 16837-39-1 | C12H8N2O3 | 228.207 |
吡啶-2-羧酸辛酯 | octyl picolinate | 5335-69-3 | C14H21NO2 | 235.326 |
—— | hexadecanyl picolinate | 31449-50-0 | C22H37NO2 | 347.541 |
—— | pyridine-2-carboxylic acid decyl ester | 5335-70-6 | C16H25NO2 | 263.38 |
—— | pyridine-2-carboxylic acid dodecyl ester | 34057-44-8 | C18H29NO2 | 291.434 |
—— | benzyl picolinate | 71653-37-7 | C13H11NO2 | 213.236 |
—— | 2-oxopropyl picolinate | —— | C9H9NO3 | 179.175 |
—— | pyridine-2-carboxylic acid sec-butyl ester | —— | C10H13NO2 | 179.219 |
—— | pyridine-2-carboxylic acid-(2-diethylamino-ethyl ester) | 51505-26-1 | C12H18N2O2 | 222.287 |
甲基2-吡啶羧酸酯1-氧化物 | 1-oxy-pyridine-2-carboxylic acid methyl ester | 38195-81-2 | C7H7NO3 | 153.137 |
—— | [(Methoxycarbonyl)oxy](pyridin-2-yl)methanone | 77626-41-6 | C8H7NO4 | 181.148 |
4-(二甲基氨基)吡啶-2-羧酸 | 4-(dimethylamino)picolinic acid | 890092-04-3 | C8H10N2O2 | 166.18 |
—— | (S,Z)-pent-3-en-2-yl picolinate | 1126011-08-2 | C11H13NO2 | 191.23 |
4-氯吡啶-2-甲酸乙酯 | ethyl 4-chloropicolinate | 64064-56-8 | C8H8ClNO2 | 185.61 |
—— | pyridine-2-carboxylic acid phenethyl ester | 71653-38-8 | C14H13NO2 | 227.263 |
—— | 2-phenylethyl pyridine-2-(18O)carboxylate | 1399680-60-4 | C14H13NO2 | 229.263 |
(3-甲基-3-氧杂环丁基)甲基2-吡啶羧酸酯 | (3-methyloxetan-3-yl)methyl pyridine-2-carboxylate | 810671-82-0 | C11H13NO3 | 207.229 |
4-甲氧基吡啶-2-甲酸甲酯 | methyl 4-methoxypicolinate | 29681-43-4 | C8H9NO3 | 167.164 |
苯基吡啶-2-羧酸酯 | phenyl picolinate | 26838-86-8 | C12H9NO2 | 199.209 |
4,6-二氯吡啶-2-羧酸 | 4,6-dichloropicolinic acid | 88912-25-8 | C6H3Cl2NO2 | 192.001 |