摘 要:本论文以吲哚-4-羧酸甲酯与4-苯基1,2,3-三唑为模板反应,详细考察了选择性合成N2-吲哚取代类化合物的影响因素,如反应溶剂、温度、催化剂、投料比、添加剂等。通过对实验数据的分析比较,我们获得了该反应的最佳条件:以1,4-二氧吹冰环为溶剂 (0.1mmol/2mL)、氯仿(200uL)为添加剂、N-碘代丁二酰亚胺(1.5eq)为催化剂,1a/2a = 1:2,室温下反应可以得到较高收率的N2选择性产物。随后我们在最佳反应条件下,通过选用不同取代基的吲哚与4-苯基-1,2,3-三氮唑反应(如:3-甲基吲哚、N1-苄基吲哚、乙氧羰基-D-色氨酸、吲哚)完善了底物的适用范围。通过IR分析对代表性化合物的结构进行了初步表征。7749
关键词:吲哚-4-羧酸甲酯;1,2,3-三唑;N2选择性;偶联
The Coupling Reaction of N2-selective 1,2,3-Triazole and Indole
Abstract: In this paper, We used the reaction of indole-4-carboxylate and 4-phenyl-1,2,3-triazole reaction as a template. We investigated the effects of the highly selective synthesis of N2-indole substituted compounds in detail, such as the solvent, the temperature, the catalyst, the ratio of substrates, the addition and so on. We analyzed and compared of the experiment data, and obtained the optimized reaction conditions: using 1,4-dioxane as the solvent (0.1mmol/2mL), 200ul chloroform as the addition and N-iodosuccinimide (1.5eq) as catalyst, 1a/2a = 1:2, we can get the highest yield of N2-selectivity product at room temperature. Then under the optimized reaction conditions, different substituted indoles (such as: 3-methyl-indole, N1-benzyl indole, ethoxycarbonyl-D-tryptophan, indole) were reacted with 4-phenyl-1,2,3-triazole to improve the scope of the substrate. The structure of representative compounds were characterized by IR.
Key Words:Indole-4-carboxylate; 1,2,3-Triazoles; N2-selectivity; Coupling Reaction
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