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1-甲基-2-苯基硫甲基-6-溴-5-羟基吲哚-3-羧酸乙酯的合成 被引量:1

Synthesis of 1-Methyl-2-Phenylthiomethyl-6-Bromo-5-Hydroxyindole-3-Ethoxycarbonyl
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摘要 以氯代乙酰乙酸乙酯和苯硫酚为主要原料,经硫醚化、胺化、Nenitzescu反应,合成目标产物1-甲基-2-苯基硫甲基-6-溴-5-羟基吲哚-3-羧酸乙酯,产品总收率为36 %.硫醚化反应在n(苯硫酚):n(NaOH):n(氯乙酰乙酸乙酯)=1:1:1,反应时间为3~4 h, 反应温度为5~10 ℃的条件下进行,中间产物4-苯硫基乙酰乙酸乙酯(I)的收率为92 %.胺化反应在n(甲胺):n(I) =1.1:1,反应时间共为20 h的条件下反应,中间产物4-苯硫基-3-甲胺基-2-丁烯酸乙酯(II)收率为94 %.Nenitzescu反应在n(溴代对苯醌):n(II) =1:1.1,反应时间为7~8 h,反应温度为80 ℃条件下反应,得到最终产物1-甲基-2-苯基硫甲基-6-溴-5-羟基吲哚-3-羧酸乙酯(Ⅲ),收率为40 %.经红外光谱、核磁共振光谱及质谱鉴定,证明结构正确. 1-Methyl-2-phenylthiomethyl-6-bromo -5-hydroxyindoles-3-ethoxycarbonyl was synthesized from ethyl 4-chloroacetoacetate and thiophenol through Sulfide etherification, Aminating, Nenitzescu reactions in total 36 % yield. 4-phenylthio-ethyl acetoacetate was synthesized in 92 % by Sulfide etherification reaction condition at temperature 5 -- 10 ℃, reaction time was 3 - 4 h and n (thiophenol) : n (NaOH) : n (ethyl 4-chloroacetoacetate) = 1 : 1 : 1. Ethyl 3-methylamino-4-phenylthio-2-butenrate was synthesized in 94 % by Aminating reaction condition reaction time was total 20 h and n (methylamine) : n (Ⅰ) = 1.1 : 1. The title compound was synthesized in 40 % by Nenitzescu reaction condition reaction time was 7--8 h and n (2-bromo-benzoquinon):n (Ⅱ) = 1:1.1. The structure of the target compounds were confirmed by IR,^1H-NMR and MS.
出处 《沈阳化工学院学报》 2006年第2期92-94,共3页 Journal of Shenyang Institute of Chemical Technolgy
基金 沈阳化工学院中青年科研启动基金项目(200416)
关键词 1-甲基-2-苯基硫甲基-6-溴-5-羟基吲哚-3-羧酸乙酯 氯代乙酰乙酸乙酯 合成 1-methyl-2-phenylthiomethyl-6-bromo-5-hydroxyindole-3-ethoxycarbonyl ethyl 4-chloroacetoacetate synthesis
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参考文献6

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二级参考文献6

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