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Rose ether, also known as oxidized rose, it is an important spice that exists in Bulgarian rose oil, geranium oil, and a variety of flowers, fruits, alcohol, and even insect secretions. In nature, it exists as (-)-(4R)-cis body and (-)-(4R)-trans body, mainly cis body, with sharp and transparent grass fragrance and rose fragrance. The aroma of the cis body is delicate, its left-handed aroma is sweet, and the trans body has a strong green aroma and is accompanied by some spice.
1. Preparation
(1) Separated from rose oil or geranium oil;
(2) It is obtained by reaction of corresponding epoxy ketone with methyl magnesium bromide and dehydration;
(3) With β- Citronellol is used as raw material, oxidized with peracetic acid to form epoxy compound, reacted with dimethylamine, oxidized with hydrogen peroxide, and finally reduced in acid solution;
(4) With β- Citronellate acetate is used as raw material, which is obtained by photooxidation at 45~55 ℃ to form glycol in alkaline solution and dehydration and cyclization under the action of sulfuric acid.
2. Source
In addition to synthesis, it naturally exists in rose oil and geranium oil.
Mainly used for rose type and geranium type and other flavors, the dosage is 0.01%-0.2%. A small amount is used in lychee, passion fruit, black currant and other edible flavors.
Rose ether, also known as oxidized rose, it is an important spice that exists in Bulgarian rose oil, geranium oil, and a variety of flowers, fruits, alcohol, and even insect secretions. In nature, it exists as (-)-(4R)-cis body and (-)-(4R)-trans body, mainly cis body, with sharp and transparent grass fragrance and rose fragrance. The aroma of the cis body is delicate, its left-handed aroma is sweet, and the trans body has a strong green aroma and is accompanied by some spice.
1. Preparation
(1) Separated from rose oil or geranium oil;
(2) It is obtained by reaction of corresponding epoxy ketone with methyl magnesium bromide and dehydration;
(3) With β- Citronellol is used as raw material, oxidized with peracetic acid to form epoxy compound, reacted with dimethylamine, oxidized with hydrogen peroxide, and finally reduced in acid solution;
(4) With β- Citronellate acetate is used as raw material, which is obtained by photooxidation at 45~55 ℃ to form glycol in alkaline solution and dehydration and cyclization under the action of sulfuric acid.
2. Source
In addition to synthesis, it naturally exists in rose oil and geranium oil.
Mainly used for rose type and geranium type and other flavors, the dosage is 0.01%-0.2%. A small amount is used in lychee, passion fruit, black currant and other edible flavors.
