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Uses and synthesis of Raspberry Ketone Powder

Raspberry Ketone Powder exists in the natural raspberry juice, the content is about (0.1~0.2)×10-6, is an important flavor component of the essential oil of ponzu, is widely used at home and abroad as a kind of fragrance with elegant fruity aroma.

Raspberry Ketone Raw Materials chemical name is 4-p-hydroxyphenyl-2-butanone, for the glossy particles or needle-like white crystals, melting point 83 ℃, boiling point 161 ℃ (0.67kPa), soluble in alcohols and oils, almost insoluble in water. Raspberry Ketone has a great economic value, in recent years has received widespread attention, the demand is also increasing year by year.

Raspberry Ketone Raw Materials has a sweet, raspberry-like fruity aroma and a crystalline appearance. Raspberry Ketone CAS 5471-51-2 can be used in cosmetic flavor formulations, and is often used in floral flavors to give them a fruity aroma.

Applications / Functions of Raspberry Ketone Powder

Raspberry Ketone Raw Materials is not only used in a large number of formulations of edible flavor and daily flavor, but also used in the synthesis and manufacture of pharmaceuticals, stimulants, cosmetics, cigarettes, dyes, etc. In addition, Raspberry Ketone Raw Materials and its acetyl compounds are fruit fly sex attractants, and can be synthesized and used as pesticides. At the same time, the molecular structure of Raspberry Ketone Powder contains aromatic rings, hydroxyl and ketone groups, with special chemical activities, but also an important intermediate for fine chemicals. With the further development of the spice industry and organic synthesis industry, the research value of Raspberry Ketone CAS 5471-51-2 is also steadily increasing, in addition to being used as a spice, it is also widely used in other fields.

1. Raspberry Ketone CAS 5471-51-2 is mainly used to formulate raspberry, grape, strawberry and other types of flavors.
2. Raspberry Ketone Powder is used to formulate food flavors, has the effect of sweetening and aroma, can also be used in cosmetics and soap flavors in the use of Raspberry Ketone is China's "hygiene standards for the use of food additives," the provisions of the permissible use of food flavors, mostly used in the preparation of pineapple, peach, strawberries, plums, and other fruits edible flavors. The usage 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.
3. Raspberry Ketone Raw Materials is widely used in edible flavors such as strawberry, hooker, pineapple, peach, etc. It is usually used as a fixative in fruity flavors.Raspberry Ketone Raw Materials can be used as a modifier in the formulation of jasmine, mast flower, evening primrose and so on in the daily chemical flavors. As a modifier, it is used in jasmine, gardenia, tuberose and other floral daily flavor. It is mostly used in edible flavors such as strawberry, pineapple, peach, plum, and hanging fruit.
4. Raspberry Ketone CAS 5471-51-2 is used as a modifier in jasmine, tuberose and other daily-use flavors, and in edible flavors such as strawberry, pineapple, peach, plum and other flavors. In medicine, it is used as the intermediate of Lanxess polybutylamine.

Raspberry Ketone Powder properties and stability

Raspberry Ketone CAS 5471-51-2 White needle-like crystal or granular solid. Raspberry aroma and fruity sweet flavor. Melting point 82～83℃. Insoluble in water and petroleum, soluble in ethanol, ether and volatile oils.Raspberry Ketone Powder is naturally found in raspberries (raspberries).

Production method of Raspberry Ketone Powder

Hydrogenation route firstly add 3.5 mol 15% sodium hydroxide into the reactor, add 2 mol acetone and 1 mol p-hydroxybenzaldehyde mixture dropwise under stirring, the temperature is controlled at 20-30 ℃, after the dropwise addition, continue to stir the reaction for 20 h. Filter to get 4-p-hydroxyphenylbutene-3-ketone-2 solid sodium salt, add water to dissolve, and then acidified with hydrochloric acid, precipitate 4-p-hydroxyphenylbutene-3-ketone-2, filtered and 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 was distilled once under reduced pressure and recrystallized 1~2 times to obtain 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 is completed, 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 reactants are 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%.

1. Raspberry Ketone Powder was hydrogenated from the condensation of p-hydroxybenzaldehyde and acetone.
2. Raspberry Ketone CAS 5471-51-2 is produced by condensation of butanedioic acid and phenol.

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