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3,4,5-三甲氧基氯苄的正交优化合成

         

摘要

Objective: To study a good method of synthesize 3, 4, 5-trimethoxylbenzyl chloride.Methods: Used THF as solvent and 3, 4, 5-trimethoxylbenzene carbonic acid as the raw material, the 3, 4, 5-trimethoxylbenzyl chloride was prepared by an reduction action in ZnCl2/NaBH4 system, the acid translated into 3, 4, 5- trimethoxylbenzalcohol, and then by chlorination,the alcohol changed into 3, 4, 5-trimethoxylbenzyl chloride.Results: The target production was determined by IR and 1H-NMR spectrum.Conclusion: The 3, 4, 5-trimethoxylbenzyl chloride can be get by this process with high yield in mild condition.%目的:优化合成3,4,5-三甲氧基氯苄的方法.方法:以四氢呋喃为溶剂,3,4,5-三甲氧基苯甲酸在ZnCl<,2>/NaBH<,4>还原体系中制备3,4,5-三甲氧基苄醇,并经正交设计优化合成工艺研究,醇经氯化反应得到3,4,5-三甲氧基氯苄.结果:经过IR、<'1>H-NMR分析,证明产物是3,4,5-三甲氧基氯苄.结论:该工艺可以较高产率地合成3,4,5-三甲氧基氯苄,并且条件温和.

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