| 第 35 卷第 3 期 |  | Vol. 35 No. 3 | | 2005 年 6 月 | Jun 2005 |
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所屬欄目：其它
氨基磺酸催化合成氯乙酸正丁酯 |
| 胡勝利; 鄭靜(湖北師范學(xué)院化學(xué)與環(huán)境工程系; 湖北黃石) |
| 摘 要：以氨基磺酸作催化劑,通過(guò)氯乙酸和正丁醇反應合成了氯乙酸正酯,并探討了諸因素對收率的影響.實(shí)驗表明:氨基磺酸具有良好的催化活性,當醇酸配比為1.4∶1(mol),催化劑用量約為氯乙酸質(zhì)量的2.5%,甲苯為帶水劑,反應時(shí)間2.5 h,反應溫度130~139℃,酯收率可達86.1%.且催化劑可重復使用。 |
| 關(guān)鍵詞：氨基磺酸; 催化; 氯乙酸正丁酯 |
| 中圖分類(lèi)號：O623 文獻標識碼：A 文章編號：1009-9212(2005)03-0035-02 |
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| Synthesis of n-Butyl Chloroacetate Catalyzed by Sulfamic Acid |
| HU Sheng-li*; ZHENG Jing （Department of Chmistry and Environmental; Hubei Normal University; Huangshi 435002; China） |
| Abstract：n-Butyl chloroacetate was synthesized from chloroacetic acid and n-butanol in the presence of sulfamic acid used as catalyst. Experimental results showed that the yield of the ester could reach 86.1% when the mole ratio of n-butanol and was chloroacetic acid 1.4∶1, the amount of sulfamic acid used was 2.5% of the acid, reaction time was 2.5 h, and temperature was 130～139℃,demonstrating that sulfamic acid had good catalytic activity on synthesis of n-butyl chloroacetate, and the catalyst could be reused. |
| Key words：Sulfamic acid; catalysis; n-butyl chloroacetate |
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收稿日期：2004-11-13
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