2-糠酸甲酯是一种由生物质转化而来的重要精细化工产品,在生物质转化领域引起广泛关注。其化学名称为2-呋喃甲酸甲酯,又称为焦粘酸甲酯。作为呋喃环系化合物中重要的衍生物之一,2-糠酸甲酯的活性中心是羰基,因其较高的反应活性和较大的极性,容易发生糠醛加氢、氧化、还原胺化作用及脱羰作用等反应。
外观淡黄色至橙色透明液体
应用2-糠酸甲酯是一种极其重要的新型合成香料,广泛应用于食品香精、烟草香精和化妆品香精等行业。同时,它也是一种重要的化工原料和中间体,可作为汽油抗爆剂改善汽油品质,并具有一定的抗肿瘤活性。
制备以糠醛为底物,使用负载型纳米金为催化剂制备2-糠酸甲酯的具体方法如下:将0.2克糠醛溶于15毫升甲醇中,加入负载型纳米金0.05克和碳酸钾助剂0.05克,在0.3MPa氧气氛围下、温度140℃、搅拌转速120转/分的条件下反应4小时。通过负载型纳米金选择性地催化氧化糠醛,制得糠酸甲酯。经气-质联用仪及气相色谱分析结果显示,糠醛转化率为92.98%,2-糠酸甲酯的选择性为98.72%。
毒性GRAS(FEMA)
使用限量FEMA(mg/kg):饮料0.61;冷饮0.06~1.3;糖果0.66;焙烤制品1.0~1.3;调味品0.02
食品添加剂最大允许使用量及残留标准无色液体。沸点181℃,相对密度1.179(22℃),折光率1.4682,闪点73℃。溶于醇和醚,微溶于水。在光线照射下变黄,并具有愉快的气味。
用途用于有机合成及作为溶剂
生产方法由糠酸与甲醇酯化而得。具体步骤如下:将糠酸溶解于甲醇中,加入浓硫酸后加热煮沸4小时,经冷却、水洗、中和处理后蒸馏得到成品。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
糠酸烯丙酯 | prop-2-enyl furan-2-carboxylate | 4208-49-5 | C8H8O3 | 152.15 |
糠酸(呋喃甲酸) | 2-Furoic acid | 88-14-2 | C5H4O3 | 112.085 |
呋喃-2,5-二甲酸二甲酯 | furan-2,5-dicarboxylic acid dimethyl ester | 4282-32-0 | C8H8O5 | 184.149 |
4-溴-呋喃-2-甲酸甲酯 | methyl 4-bromofuran-2-carboxylate | 58235-80-6 | C6H5BrO3 | 205.008 |
5-溴-2-糠酸甲酯 | methyl 5-bromo-2-furoate | 2527-99-3 | C6H5BrO3 | 205.008 |
3-氨基呋喃-2-甲酸甲酯 | methyl 3-aminofuran-2-carboxylate | 956034-04-1 | C6H7NO3 | 141.126 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-呋喃甲基乙酯 | Ethyl 2-furoate | 614-99-3 | C7H8O3 | 140.139 |
5-甲基-2-糠酸甲酯 | methyl 5-methyl-2-furancarboxylate | 2527-96-0 | C7H8O3 | 140.139 |
糠酸(呋喃甲酸) | 2-Furoic acid | 88-14-2 | C5H4O3 | 112.085 |
5-(羟基甲基)-2-糠酸甲酯 | methyl 5-(hydroxymethyl)furan-2-carboxylate | 36802-01-4 | C7H8O4 | 156.138 |
5-甲酰基-2-呋喃甲酸甲酯 | methyl 5-formylfuran-2-carboxylate | 5904-71-2 | C7H6O4 | 154.122 |
呋喃甲酸丁酯 | furan-2-carboxylic acid butyl ester | 583-33-5 | C9H12O3 | 168.192 |
—— | 5-methoxymethyl-furan-2-carboxylic acid methyl ester | 7042-04-8 | C8H10O4 | 170.165 |
2-糠酸糠基酯 | furfuryl 2-furoate | 615-11-2 | C10H8O4 | 192.171 |
—— | tert-butyl furan-2-carboxylate | 16737-36-3 | C9H12O3 | 168.192 |
5-甲氧基羰基呋喃-2-羧酸 | 5-(methoxycarbonyl)furan-2-carboxylic acid | 6750-85-2 | C7H6O5 | 170.122 |
呋喃-2,5-二甲酸二甲酯 | furan-2,5-dicarboxylic acid dimethyl ester | 4282-32-0 | C8H8O5 | 184.149 |
2-呋喃酸戊酯 | 2-furoic acid n-pentyl ester | 4996-48-9 | C10H14O3 | 182.219 |
2-糠酸己酯 | hexyl furan-2-carboxylate | 39251-86-0 | C11H16O3 | 196.246 |
十八烷基呋喃-2-羧酸酯 | octadecyl furan-2-carboxylate | 82701-01-7 | C23H40O3 | 364.569 |
正辛基-2-呋喃羧酸酯 | octyl furan-2-carboxylate | 39251-88-2 | C13H20O3 | 224.3 |
5-氨基-2-糠酸甲酯 | methyl 5-amino-2-furoate | 22600-30-2 | C6H7NO3 | 141.126 |
4-溴-呋喃-2-甲酸甲酯 | methyl 4-bromofuran-2-carboxylate | 58235-80-6 | C6H5BrO3 | 205.008 |
—— | methyl 4-aminofuran-2-carboxylate | 1170778-05-8 | C6H7NO3 | 141.126 |
5-氯康酸-2-甲酸甲酯 | methyl 5-chloro-2-furoate | 58235-81-7 | C6H5ClO3 | 160.557 |
—— | methyl 5-((formyloxy)methyl)furan-2-carboxylate | 108153-38-4 | C8H8O5 | 184.149 |
5-溴-2-糠酸甲酯 | methyl 5-bromo-2-furoate | 2527-99-3 | C6H5BrO3 | 205.008 |
—— | furan-2-carboxylic acid benzyl ester | 5380-40-5 | C12H10O3 | 202.21 |
—— | 2-furoic triethanolamine ester | 1354795-01-9 | C11H17NO5 | 243.26 |
—— | 1,1-bis-(2'-methoxyfuroyl-5'-methyleneoxy)methane | 36802-00-3 | C15H16O8 | 324.287 |
—— | 5-ethyl-furan-2-carboxylic acid methyl ester | 71387-70-7 | C8H10O3 | 154.166 |
5-(氯甲基)-2-糠酸甲酯 | methyl 2-chloromethyl-5-furoate | 2144-37-8 | C7H7ClO3 | 174.584 |
5-(溴甲基)-2-糠酸甲酯 | methyl 5-(bromomethyl)-furan-2-carboxylate | 70117-25-8 | C7H7BrO3 | 219.035 |
—— | 5-mercaptomethyl-furan-2-carboxylic acid methyl ester | 859303-93-8 | C7H8O3S | 172.205 |
—— | 2-ethylhexyl furan-2-carboxylate | —— | C13H20O3 | 224.3 |
5-甲基-2-糠酸 | 5-methylfuran-2-carboxylic acid | 1917-15-3 | C6H6O3 | 126.112 |
—— | glycidyl 2-furancarboxylate | 705-08-8 | C8H8O4 | 168.149 |
—— | methyl 5-(acetoxymethyl)furan-2-carboxylate | 2144-38-9 | C9H10O5 | 198.175 |
5-甲醛基呋喃-2-羧酸 | 5-Formyl-2-furancarboxylic acid | 13529-17-4 | C6H4O4 | 140.095 |
5-[(5-羧基呋喃-2-基)甲氧基甲氧基甲基]呋喃-2-羧酸 | 1,5-di(5-carboxyfuran-2-yl)-2,4-dioxapentan | 83598-30-5 | C13H12O8 | 296.233 |
5-羟甲基-2-呋喃甲酸 | 5-hydroxymethyl-furan-2-carboxylic acid | 6338-41-6 | C6H6O4 | 142.111 |
甲基糠基醚 | 2-(methoxymethyl)furan | 13679-46-4 | C6H8O2 | 112.128 |
—— | bis(hydroxyethyl) 2,5-furandicarboxylate | —— | C10H12O7 | 244.201 |
环己基呋喃-2-羧酸酯 | cyclohexyl furan-2-carboxylate | 39251-91-7 | C11H14O3 | 194.23 |
2,5-呋喃二甲酸 | furan-2,5-dicarboxylic acid | 3238-40-2 | C6H4O5 | 156.095 |
5-异丙基呋喃-2-甲酸甲酯 | 5-Isopropyl-furan-2-carbonsaeure-methylester | 38071-66-8 | C9H12O3 | 168.192 |
5-甲氧基呋喃-2-羧酸甲酯 | methyl 5-methoxy-2-furancarboxylate | 53869-94-6 | C7H8O4 | 156.138 |
—— | 5-cyanomethyl-furan-2-carboxylic acid methyl ester | 39258-67-8 | C8H7NO3 | 165.148 |
5-乙酰基-2-呋喃甲酸甲酯 | methyl 5-acetylfuran-2-carboxylate | 13341-79-2 | C8H8O4 | 168.149 |
5-叔丁基呋喃-2-羧酸甲酯 | methyl 5-tert-butylfuran-2-carboxylate | 59907-23-2 | C10H14O3 | 182.219 |
5-溴-2-糠酸 | 5-Bromo-2-furoic acid | 585-70-6 | C5H3BrO3 | 190.981 |
—— | methyl 5-dimethylaminomethyl-2-furoate | 74626-24-7 | C9H13NO3 | 183.207 |
—— | methyl 2-(3-methylbut-2-enyl)furan-5-carboxylate | 117269-19-9 | C11H14O3 | 194.23 |
—— | 5-[(benzyloxy)carbonyl]furan-2-carboxylic acid | 633333-44-5 | C13H10O5 | 246.219 |
5-(甲氧羰基)呋喃-3-羧酸 | 5-(methoxycarbonyl)furan-3-carboxylic acid | 1170719-57-9 | C7H6O5 | 170.122 |
—— | bis-(5-methoxycarbonyl-furfuryl)-sulfide | 73823-30-0 | C14H14O6S | 310.328 |
The design and application of a single-pot, reductive arene C–H bond silanolization of esters for synthesis of