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CAS : 104-46-1
formula : C10H12O
molecular weight : 148.20
boiling point : 232 ° C
melting point : 20-235 ° C
Chinese name : k Anethole; 1-methoxy-4 - (1-propenyl) benzene; 1-methoxy-4-phenyl propylene; Fennel accuracy; right propenyl fennel ether; ANETHOLE; or, Bai; anisic brain
English title : 1-methoxy-4- (1-propenyl) - benzene; 1-methoxy-4 - (1-propenyl) benzene; 1-methoxy-4-propenylbenzene; 1-(4 - methoxyphenyl) - 1-propen; 4-methoxypropenylbenzene; 4-propenylanisole
traits Description : goods to 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; Compatibility ether, dissolved in benzene; Ethyl acetate; Acetone; Carbon disulfide; The petroleum ether and alcohol, do not dissolve in water. With a sweet, fennel with the special aroma.
production methods : 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) of 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 ether and fennel mixture propionaldehyde, 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 : particularly in the food, cakes and the Flavoring for the fennel flavor and licorice flavors; Also for beverages, widely used apricot; Bitter Mill; Yangmei the Flavor and toothpaste and Gargle so. In addition, Anethole also used drugs Jiao Jiao taste and odor agent agent; Cosmetics and soap spices; Synthetic drugs, raw materials and color photography by 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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