第 36 卷第 3 期 |  | Vol. 36 No. 3 | 2006 年 6 月 | Jun 2006 |
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所屬欄目:香精香料
甲位戊基桂醛的合成研究 |
吳奇林; 甄宏爝(廣州百花香料股份有限公司; 廣東廣州) |
摘 要:以苯甲醛和正庚醛為原料,乙二醇為溶劑,在氫氧化鉀催化作用下羥醛縮合合成甲位戊基桂醛。實(shí)驗研究了不同溶劑、催化劑用量、苯甲醛和正庚醛的摩爾比、反應時(shí)間、乙二醇用量等因素對反應結果的影響,得出了優(yōu)化工藝條件:催化劑用量為正庚醛質(zhì)量的17.5%,苯甲醛和正庚醛的摩爾比為1.5∶1,反應時(shí)間為6 h,乙二醇用量為190.0g,收率達到90.5%(以正庚醛計),副產(chǎn)物戊基壬烯醛含量小于1.0%。 |
關(guān)鍵詞:羥醛縮合; 甲位戊基桂醛; 乙二醇 |
中圖分類(lèi)號:TQ224 文獻標識碼:A 文章編號: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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