Production method of 1'-acetoxyl chavicol acetic ester
A technology of acetoxypiperol acetate and production method, which is applied in the field of 1'-acetoxypiperol acetate production, can solve the problems of poor reaction quality and low yield, and achieve complete reaction and high yield. High, easy-to-operate effect
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[0026] 1. Preparation of 4-(1-hydroxy-4-butene)-phenol
[0027] Take p-hydroxybenzaldehyde and propenyllithium and add them to a multifunctional reaction kettle with a special bottom valve, add ether, stir and react, and let stand.
[0028] Separate the organic phase and add anhydrous sodium sulfate to dry it, filter it with a special filter, and recover diethyl ether by distillation to obtain 4-(1-hydroxy-4-butene)-phenol with a yield of 96%.
[0029] 2. Preparation of crude product of 1'-acetoxypiperol acetate
[0030] Take 4-(1-hydroxy-4-butene)-phenol, acetic anhydride, anhydrous pyridine, and 4-dimethylaminopyridine, put them in a multifunctional reaction kettle with a special bottom valve, stir, and set the temperature at 90°C to 110°C React for 8 to 10 hours, stop heating, stir and react at room temperature for 8 to 10 hours, add water and stir for 1 hour, add toluene and stir for 1 hour, add hydrochloric acid solution and stir for 2 hours, let stand, separate the tolu...
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