Method for preparing raspberry ketone in acidic ionic liquid
A technology for acidic ionic liquid and raspberry ketone, which is applied in the field of preparing raspberry ketone in acidic ionic liquid and preparing raspberry ketone, can solve the problems of toxic and harmful catalysts, non-recyclable use, use of volatile organic solvents, industrial three wastes, and the like, To achieve the effect of simple reaction process and easy operation
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[0016] Example 1
[0017] Put 0.6 moles of phenol, 0.8 moles of butenone and 0.2 moles of [NMPH]H into the reaction vessel 2 PO 4 The acidic ionic liquid was stirred at 30°C for 12 hours. Heat to 90°C and add 2 moles of water. The product raspberry ketone was obtained by filtration and separation, and the yield of the reaction was 32%; the unreacted raw material and the isolated liquid could be used for the next experiment after dewatering.
Example Embodiment
[0018] Example 2
[0019] Put 0.6 moles of phenol, 0.5 moles of butenone and 0.2 moles of [NMPH]HSO into the reaction vessel 4 The acidic ionic liquid was stirred at 40°C for 12 hours. Heat to 90°C and add 2 moles of water. The product raspberry ketone was obtained by filtration and separation, and the yield of the reaction was 40%; the unreacted raw materials and ionic liquid could be used in the next experiment after water removal.
Example Embodiment
[0020] Example 3
[0021] 0.4 moles of phenol, 0.5 moles of butenone and 0.2 moles of [NMPH]PTSA acidic ionic liquid were put into the reaction vessel, and the reaction was stirred at 15° C. for 24 hours. Heat to 90°C and add 1 mole of water. The product raspberry ketone was obtained by filtration and separation, and the reaction yield was 34%; the unreacted raw materials and ionic liquid could be used in the next experiment after dewatering.
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