第 36 卷第 3 期 | | Vol. 36 No. 3 | 2006 年 6 月 | Jun 2006 |
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所属栏目:香精香料
甲位戊基桂醛的合成研究 |
吴奇林; 甄宏爝(广州百花香料股份有限公司; 广东广州) |
摘 要:以苯甲醛和正庚醛为原料,乙二醇为溶剂,在氢氧化钾催化作用下羟醛缩合合成甲位戊基桂醛。实验研究了不同溶剂、催化剂用量、苯甲醛和正庚醛的摩尔比、反应时间、乙二醇用量等因素对反应结果的影响,得出了优化工艺条件:催化剂用量为正庚醛质量的17.5%,苯甲醛和正庚醛的摩尔比为1.5∶1,反应时间为6 h,乙二醇用量为190.0g,收率达到90.5%(以正庚醛计),副产物戊基壬烯醛含量小于1.0%。 |
关键词:羟醛缩合; 甲位戊基桂醛; 乙二醇 |
中图分类号:TQ224 文献标识码:A 文章编号:1009-9212(2006)03-0040-03 |
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Synthesis of α-Amyl Cinnamaldehyde |
WU Qi-lin; ZHEN Hong-jue(Guangzhou Baihua Flavors & Fragrances Co.; Ltd.; Guangzhou 510370; China) |
Abstract:α-Amyl cinnamaldehyde was synthesized from benzaldehyde and n-heptanal by aldol condensation with catalyst potassium hydroxide in solvent ethylene glycol.The effects of different solvents,catalyst amount,mole ratio of benzaldehyde and n-heptanal,reaction time and ethylene glycol amount on the yields of α-amyl cinnamaldehyde were investigated.The optimal condition was as follows:w(cat)=17.5%(n-heptanal),n(benzaldehyde) ∶ n(n-heptanal)=1.5 ∶ 1,reaction time 6 h,ethylene glycol 190.0 g.The yield of α-amyl cinn... |
Key words:aldol condensation; α-Amyl cinnamaldehyde; ethylene glycol |
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收稿日期:2006-02-09
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