Perfume composition
A composition and fragrance technology, applied in the direction of softening composition, detergent composition, organic cleaning composition, etc., can solve the problems of difficult to predict the change of fragrance tone, difficult to predict the harmony of fragrance raw materials, etc., to achieve excellent harmony, impart Floral scent, fragrance-enhancing effect
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[0120] In the following production examples, etc., the details of the measurement methods performed are also shown below.
[0121] [identification of compounds]
[0122] By NMR spectroscopy ( 1 H-NMR) The structure of each compound obtained in the following manufacture example etc. was identified. The nuclear magnetic resonance spectrum was measured with a product name "Mercury 400" manufactured by Varian using chloroform-d as a solvent.
manufacture example 1
[0124]Production of 4,7-methyloct-4-en-3-one (compound (II))
[0125]
[0126] Sodium hydroxide (0.1g), water (20g) and 3-pentanone (IV) (50g, 0.58mol) were added to the flask, maintained at 15°C, and isovaleraldehyde (III) was added dropwise over 5 hours while stirring. ) (20 g, 0.23 mol), additionally added sodium hydroxide (0.2 g), and further stirred at 25° C. for 48 hours. After stirring, the reaction solution was allowed to stand to remove the lower layer, and then excess 3-pentanone (IV) was distilled off from the upper layer.
[0127] Next, 85% phosphoric acid (1 g) was added to the upper layer of the reaction liquid, and a water distillation device was installed in the flask to heat to 120° C. for dehydration. Sodium hydroxide (0.7 g) was added and neutralized to the dehydrated reaction liquid, and magnesium sulfate was added and dried, and magnesium sulfate was removed by filtration. The obtained reaction solution was concentrated to obtain a residue (23 g).
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manufacture example 2
[0131] Production of 4,7-dimethyloctan-3-ol (compound (I))
[0132]
[0133] Add 5% activated carbon-supported ruthenium catalyst (0.06g), isopropanol (1.0g) and the compound (II) (1.0g) that obtains in the manufacture example 1 in the hydrogenation pressure-proof flask, at 90 ℃, 0.5 Hydrogenation was carried out at a hydrogen pressure of MPa for 18 hours. The obtained reaction solution was filtered to obtain 2 g of a filtrate (yield 95%).
[0134] The obtained filtrate was concentrated, and the obtained concentrate was purified by distillation to obtain 0.8 g of compound (I). The purity of the obtained compound (I) was 99%.
[0135] Compound (I) is shown below 1 Measurement results of H-NMR.
[0136] 1 H-NMR (CDCl 3 ,400MHz,δppm):0.80-0.90(m,9H), 0.96(dt, J=7.2Hz,5.2Hz,3H), 1.05-1.60(m,9H), 3.30-3.45(m,1H)
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