Alpha/beta-unsaturated ketone and application thereof
An unsaturated and versatile technology, applied in applications, chemicals for biological control, food science, etc., can solve problems such as high cost and complex synthesis process, achieve fast action, improve aroma, and reduce irritation Effect
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[0033]Take 100 g of star anise residue, add 300 ml of ethyl acetate, stir at room temperature for 2 hours, filter off the insoluble matter to obtain the filtrate, weigh 100 g of column chromatography silica gel, add to the filtrate, and mix the sample;
[0034] Weigh 820g column chromatography silica gel column, and use pure cyclohexane, cyclohexane: ethyl acetate = 50:1, 10:1, 5:1, 1:1 mixed solvent gradient elution, each bottle flow Tap liquid 250ml;
[0035] Each fraction was detected by thin-layer chromatography, and the combined bottle numbers were as follows: HY-1 (1-26 bottles), HY-2 (27-32 bottles), HY-3 (33-37 bottles), HY-4 ( 38-50 bottles), HY-5 (51-77 bottles), HY-6 (78-81 bottles), HY-7 (82-88 bottles), HY-8 (89-99 bottles), HY-9 (100 bottles -109 bottles), HY-10 (110-127 bottles);
[0036] Distill HY-7 to remove the solvent under reduced pressure to obtain 5.1g of viscous material, mix the sample with 10g of silica gel for column chromatography, weigh 120g of s...
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