Raspberry Ketone Raw Materials Powder 5471-51-2

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Raspberry ketone is not only used in large quantities for the preparation of edible flavours and daily use flavours, and also used in the synthetic manufacture of pharmaceuticals, stimulants, cosmetics, cigarettes, dyes, etc., in addition, raspberry ketone and its acetyl compounds is a fruit fly sex attractant, can be synthesised as a pesticide use.

At the same time, because the molecular structure of raspberry ketone contains aromatic ring, hydroxyl and ketone group, has a special chemical activity, is also an important fine chemicals intermediates.

With the further development of the spice industry and organic synthesis industry, the research value of raspberry ketone is also growing steadily, in addition to being used as a spice, in other areas are also widely used.

Uses and functions of Raspberry Ketone.

Raspberry ketone is a food flavouring permitted by China's Hygienic Standard for the Use of Food Additives, and is mostly used in the preparation of edible flavourings for pineapples, peaches, strawberries, plums and other fruits. The amount used in chewing gum is 40-320mg/kg; 54mg/kg in baked food; 44mg/kg in candy; 34mg/kg in cold drink; 16mg/kg in soft drink; 5.0-50mg/kg in pudding.

Widely used in edible flavours such as strawberry, pittosporum, pineapple, peach, etc. It is usually used as a fixative in fruity flavours. It can be used in jasmine, mast flower, tuberose and other formulations in daily chemical flavours. As a modifier, used in jasmine, gardenia, evening tuberose and other floral type daily use flavour. In the edible flavour essence is used in strawberry, pineapple, peach, plum, hanging fruit and other flavour essence

Usage: As a modifier, it is used in jasmine, tuberose and other daily-use fragrances, and in edible fragrances, it is used in strawberry, pineapple, peach, plum and other fragrances. In medicine, it is used in the intermediates of Lancet polybutylamine.

Pharmacological Effects ofRaspberry Ketone Raw.

Production method of Bulk Raspberry Ketone Powder.

Hydrogenation route first 3.5 mol 15% sodium hydroxide was added to the reactor, 2 mol acetone and 1 mol p-hydroxybenzaldehyde mixture was added dropwise under stirring, the temperature was controlled at 20-30 ° C, after the dropwise addition, the reaction was continued to be stirred for 20 h. The solid sodium salt of 4-p-hydroxyphenylbutene-3-ketone-2 was obtained by filtration, and dissolved by adding water, and then acidified with hydrochloric acid to precipitate 4-p-hydroxyphenylbutene-3-ketone-2, filtered, and then dried for use. -one-2, filtered and dried for use.

In an autoclave, 100g of the above intermediate and 5g of nickel catalyst were added, and the air therein was replaced by hydrogen and then heated to 120~140°C, and the reaction was carried out under the pressure of 0.98 MPa for 1.5 h. After cooling, the catalyst was filtered off, and the content of raspberry ketone was 89%, and the hydrogenation yield was 92%.

The above crude product will be distilled once under reduced pressure, recrystallisation 1 to 2 times can be obtained white crystals, melting point 82 ℃. Phenol route in the reactor to add 94g of phenol and the appropriate amount of 85% of the phosphoric acid mixed catalyst, 70g of methyl vinyl ketone in 40min dropwise addition, the temperature is maintained at 15 ~ 20 ℃, after the addition of the reaction and then stirring reaction for 4h. After the reaction is completed, the reaction product is washed with water to neutral, distillation under reduced pressure to recover 63g of phenol, to obtain the product of 25g, the melting point of 81.5 ~ 82.5 ℃, the yield is 80%.

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