第 37 卷第 5 期 |  | Vol. 37 No. 5 | 2007 年 10 月 | Oct 2007 |
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所屬欄目:醫藥及中間體
4-正丁基-2-硝基苯胺的制備 |
邱 滔,傅 睿
(江蘇工業(yè)學(xué)院 精細化工研究所,江蘇 常州 213016) |
摘 要:以對正丁基苯胺為原料,合成了4-正丁基-2-硝基苯胺。經(jīng)過(guò);,硝化,水解等三步反應,總收率可達76%。其中;拖趸可以合并成一鍋法反應。用醋酐進(jìn)行乙;磻,再用濃硝酸硝化,加入醋酐做溶劑。硝化結束后,用乙醇作溶劑經(jīng)堿性水解得到目標產(chǎn)物。實(shí)驗得出物料的優(yōu)惠配比為:n(對正丁基苯胺) ∶ n(乙酸酐)=1 ∶ 3,n(對正丁基乙酰苯胺) ∶ n(醋酐) ∶ n(濃硝酸)=1 ∶ 3 ∶ 5,n(鄰硝基對正丁基乙酰苯胺) ∶ n(氫氧化鉀)=1 ∶ 1.3。 |
關(guān)鍵詞:4-正丁基-2-硝基苯胺;醋酐;濃硝酸;合成 |
中圖分類(lèi)號:O622.6 文獻標識碼:A 文章編號:1009-9212(2007)05- 0034-03 |
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Synthesis of 4-Butyl-2-nitroaniline |
QIU Tao,FU Rui
(Insititute of Fine Chemical Engineering,Jiangsu Polytechnic University,Changzhou 213016 ,China) |
Abstract:4-Butyl-2-niroaniline was prepared from p-n-butylaniline through acylation, nitration and hydrolysis, and its total yield was 76 %. Among them, the acylation and nitration could be combined into one-pot reactor. The coumpound p,n-butylacetylaniline was got using the p, n-butylaniline and aceticanhydride as material. Acetic anhydride was used as solvent in the process of nitration. After that, the nitrification product was treated with alkaline hydrolysis using alcohol as solvent. The optimum ratios of reactants determined by experiments were n(p,n-butyl aniline) ∶ n(acetic anhydride)=1 ∶ 3, n(4-butylacetanilide)∶ n(acetic anhydride)∶ n(nitric acid)=1 ∶ 3 ∶ 5, n(p,n-butyl- acetylaniline) ∶ n(potassium hydroxide)=1 ∶ 1.3. |
Key words:4-butyl-2-niroaniline;acetic anhydride;nitric acid;synthesis |
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作者簡(jiǎn)介:邱 滔(1967-),男,江蘇常州人,副研究員。研究方向:從事精細化工中間體的研制和開(kāi)發(fā)。(E-mail:qiutao@jpu.edu.cn)
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收稿日期:2007-09-29
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