142752-12-3
142752-12-3 結(jié)構(gòu)式
基本信息
1-(4-氨基苯基)-4-羥基哌啶
1-(4-aminophenyl)piperidin-4-ol
4-Piperidinol, 1-(4-aminophenyl)-
1-(4-AMINOPHENYL)-4-HYDROXYPIPERIDINE
物理化學(xué)性質(zhì)
制備方法
79421-45-7
142752-12-3
以1-(4-硝基苯基)哌啶-4-醇為原料合成1-(4-氨基苯基)-4-羥基哌啶的一般步驟如下:將1-(4-硝基苯基)哌啶-4-醇(1.50g,6.75mmol)溶解于甲醇(25ml)中,加入10%鈀-碳催化劑(150mg)。將反應(yīng)體系置換為氫氣氛圍,于室溫下攪拌反應(yīng)2小時。反應(yīng)完成后,通過硅藻土過濾反應(yīng)混合物,并用甲醇洗滌濾餅。合并濾液與洗滌液,通過減壓蒸餾除去溶劑,得到目標(biāo)產(chǎn)物1-(4-氨基苯基)-4-羥基哌啶(1.28g,收率99%)。產(chǎn)物結(jié)構(gòu)經(jīng)1H-NMR(CDCl3/TMS)確認(rèn),化學(xué)位移δppm如下:1.70-1.80(m,2H),2.07(br,2H),2.84(br,2H),3.37(br,3H),3.85(br,1H),6.65(d,J=8.4Hz,2H),6.91(br,2H)。
參考文獻(xiàn):
[1] Patent: EP1988077, 2008, A1. Location in patent: Page/Page column 64-65
[2] Patent: WO2012/59932, 2012, A1. Location in patent: Page/Page column 112
[3] Patent: US2011/319413, 2011, A1. Location in patent: Page/Page column 11
[4] Patent: EP1775298, 2007, A1. Location in patent: Page/Page column 39
[5] Patent: US2007/32478, 2007, A1. Location in patent: Page/Page column 147
