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Molecular formula : C10H12O
MW : 148.20
CAS No. :104-46-1
nature : the goods for the colorless or slightly yellow liquid or crystal. The temperature of 22.5 ° C, the boiling point of 235 ° C cards for-81.5 ° C (Pa), the relative density of 0.9883 (20 / 4 ° C), the refractive index 1.56145, the flash point of 90 ° C. With chloroform and ether immiscibility, soluble in benzene, ethyl acetate, acetone, carbon disulfide, petroleum ether and alcohol, do not dissolve in water. With a sweet, fennel with the special aroma.
Preparation : Anethole France in the industrial system a variety of factors, the following are introduced. (1) Fennel oil or anise oil cooling, precipitated crystallization, distillation and alcohol recrystallization available. Fennel can also right oil distillation, collecting 230-234 ° C distillation of the material. Or vacuum distillation, collecting 142 ° C (5.60kPa) or 110 ° C (kPa) distillate, in anethole. (2) from the trimethoxybenzaldehyde butanoic acid by 220-240 ° C heat generated from. (3) will propylene - anisole with caustic heated, heterogeneous into anethole. (4) from the propylene-based methylation of phenol derived. (5) anisaldehyde with G2H5MgX role of the resultant water heating Anethole be dehydration. (6) anisaldehyde anhydride and C and C to be heated sodium Anethole. (7) In the fennel and propionaldehyde ether mixture, at 0 ° C by adding hydrochloric acid and phosphoric acid, hydrogen chloride gas saturated, and the product will pyridine off heated hydrogen chloride, or be anethole. Hydrobromic acid can also be used instead of concentrated hydrochloric acid, sodium metal products, from hydrogen bromide is to be anethole. (8) will bromine fennel ether into Grignard reagent preparation and reaction with allyl bromide, generation of trimethoxybenzaldehyde propylene, then with potassium hydroxide heated, isomerization be anethole.
purposes : food, especially in the pudding Flavoring for the aniseed flavor and licorice flavors; Also for beverages, widely used in apricot, O2 Mill, Yangmei the Flavor and toothpaste and mouthwash in the other. In addition, Anethole also used the drug agents and taste Jiao Jiao flavorings, cosmetics and soap spices, synthetic drugs and color photographic materials by the flu agents. Anethole as drugs, in response to chemotherapy or radiotherapy-induced leukopenia the syndrome, and other causes of leukopenia have some therapeutic effect. Anethole as the production of consumer anise aldehyde larger proportion. Right sulfanilic acid in the presence of, Anethole (Anethole or contain the essential oil) by ozone, nitric acid, potassium permanganate or red liquid alum sulphate oxide derived aldehyde anise (right 5dimethoxybenzaldehide).
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