4-戊基苯乙炔是一种有机中间体。它可以通过以下步骤制备:首先将对戊基溴苯与三甲基硅乙炔反应生成中间产物1;然后使用碳酸钾脱除三甲基硅基,得到最终产物4-戊基苯乙炔。
制备 第一步将80克对戊基溴苯(0.352毫摩尔)、60毫升三甲基硅乙炔、0.392克二(三苯基磷)二氯化钯(0.56毫摩尔)、1.144克三苯基膦(4.4毫摩尔)和0.308克碘化铜(1.6毫摩尔)溶解在440毫升三乙胺中。抽真空三次,氮气保护,并将反应温度控制在50℃左右,反应进行12小时。通过HPLC点板监测原料基本反应完全后,冷却至室温,加入稀盐酸,产生固体(三乙胺盐酸盐)。过滤该固体,母液中加500毫升乙酸乙酯和500毫升水进行分液萃取,水相用乙酸乙酯洗涤两次,合并有机相并用无水硫酸镁干燥。最终浓缩得到中间产物1(80克),产率为95.6%。
第二步将80克中间产物1(0.37摩尔)、160毫升甲醇和370克碳酸钾加入单口瓶中,室温搅拌2小时。通过TLC(PE)点板监测反应完成,过滤并浓缩除去甲醇,用200毫升二氯甲烷和200毫升水进行萃取,水相用二氯甲烷萃取三次,合并有机相并用无水硫酸镁干燥,减压浓缩得到中间产物4-戊基苯乙炔(63克),产率为99.4%。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4-戊基苯乙炔 | 1-ethynyl-4-(n-pentyl)benzene | 79887-10-8 | C13H16 | 172.27 |
—— | 1-(4-pentylphenyl)-2-(trimethylsilyl)acetylene | 138220-08-3 | C16H24Si | 244.452 |
4-正戊基苯甲醛 | 4-pentylbenzaldehyde | 6853-57-2 | C12H16O | 176.258 |
4-正戊基苯胺 | 4-pentylaniline | 33228-44-3 | C11H17N | 163.263 |
1-碘-4-正戊烷基苯 | 1-iodo-4-pentylbenzene | 85017-60-3 | C11H15I | 274.145 |
对戊基溴苯 | 4-pentylbromobenzene | 51554-95-1 | C11H15Br | 227.144 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4-戊基苯乙炔 | 1-ethynyl-4-(n-pentyl)benzene | 79887-10-8 | C13H16 | 172.27 |
—— | 1-(4-pentylphenyl)propyne | 627100-25-8 | C14H18 | 186.297 |
—— | 1-(bromoethynyl)-4-pentylbenzene | 137476-55-2 | C13H15Br | 251.166 |
—— | 1-pentyl-4-(phenylethynyl)benzene | —— | C19H20 | 248.368 |
—— | 1-methyl-4-((4-pentylphenyl)ethynyl)benzene | —— | C20H22 | 262.395 |
—— | 1,2-bis(4-pentylphenyl)ethyne | —— | C24H30 | 318.502 |
—— | 3-(4-pentylphenyl)propiolaldehyde | —— | C14H16O | 200.28 |
—— | p-ethylamylbenzene | 34350-07-7 | C13H20 | 176.302 |
—— | 1-(4-pentylphenyl)-2-(trimethylsilyl)acetylene | 138220-08-3 | C16H24Si | 244.452 |
—— | 1-Pentyl-4-[8-(4-pentylphenyl)octa-1,3,5,7-tetraynyl]benzene | 1404295-75-5 | C30H30 | 390.568 |
—— | 1-pentyl-4-(3,3,3-trifluoroprop-1-yn-1-yl)benzene | 1356486-33-3 | C14H15F3 | 240.268 |
4-[(4-戊基苯基)乙炔基]苯甲腈 | 4-((4-pentylphenyl)ethynyl)benzonitrile | 56982-41-3 | C20H19N | 273.378 |
—— | 4-n-pentylphenylpropynic acid | 1287769-71-4 | C14H16O2 | 216.28 |
—— | 4-amino-4′-pentyldiphenylacetylene | 145349-74-2 | C19H21N | 263.382 |
—— | ((4-pentylphenyl)ethynyl)(trifluoromethyl)sulfane | 1388753-54-5 | C14H15F3S | 272.334 |
—— | 4-(4-pentylphenylethynyl)phenol | 120091-70-5 | C19H20O | 264.367 |
1-溴-4-[2-(4-戊基苯基)乙炔基]苯 | 1-Bromo-4-[(4-pentylphenyl)ethynyl]benzene | 62856-46-6 | C19H19Br | 327.264 |
—— | 1-pentyl-4-vinylbenzene | 46234-63-3 | C13H18 | 174.286 |
—— | trimethyl((4-pentylphenyl)-butadiynyl)silane | 1384385-64-1 | C18H24Si | 268.474 |
—— | 2,6-bis(4-pentylphenylethynyl)anthracene | —— | C40H38 | 518.742 |
—— | (E)-1-phenyl-4-(4-amylphenyl)but-1-en-3-yne | 1448055-65-9 | C21H22 | 274.406 |
1-戊基-4-[2-(4-甲氧苯基)乙炔基]苯 | 1-methoxy-4-((4-pentylphenyl)ethynyl)benzene | 39969-28-3 | C20H22O | 278.394 |
对戊基苯乙酮 | 4-n-pentylacetophenone | 37593-02-5 | C13H18O | 190.285 |
—— | 3,5-Bis[2-(4-pentylphenyl)ethynyl]benzaldehyde | 496043-84-6 | C33H34O | 446.632 |
—— | 1-methoxy-4-((4-pentylphenyl)buta-1,3-diynyl)benzene | —— | C22H22O | 302.416 |
4-正戊基苯胺 | 4-pentylaniline | 33228-44-3 | C11H17N | 163.263 |
—— | 1-(4-isothiocyanatophenyl)-2-(4-pentylphenyl)ethyne | 145349-75-3 | C20H19NS | 305.444 |
—— | Butyl 3-(4-pentylphenyl)prop-2-ynoate | 1449127-52-9 | C18H24O2 | 272.387 |
—— | 1-(1-bromovinyl)-4-pentylbenzene | —— | C13H17Br | 253.182 |
—— | 3-(4-pentylphenyl)-1-phenylprop-2-yn-1-ol | 1133890-39-7 | C20H22O | 278.394 |
—— | 1,3,5-tris[(4-pentylphenyl)ethynyl]-2,4,6-trimethylbenzene | —— | C48H54 | 630.957 |
4-正戊基苯甲酸 | 4-pentylbenzoic acid | 26311-45-5 | C12H16O2 | 192.258 |
A microwave-assisted protocol was developed for the construction of 2-amino-1