通过选择性缩醛化2,4-戊二醇的非对映异构混合物并选择性水解相应的缩醛,开发了一种简单有效的方法,可有效分离非对映异构的顺式和反式-2,4-戊二醇。该方法依赖于缩醛化反应中顺式-2,4-戊二醇(顺式-二醇)和抗2,4-戊二醇(抗二醇)和水解中相应的缩醛的反应速率差异:顺式-二醇反应得更快,形成比抗缩醛更稳定的缩醛-二醇,其更容易被布朗斯台德酸水解。2,4-戊二醇的非对映混合物的缩醛化(顺/反(相对于0.95当量= 45:55)与苯乙酮顺式-二醇)导致形成一个的顺式与富集混合物缩醛顺/反非对映体比率(DR s / a)为6:1,剩下的是抗富集的二醇混合物(dr s / a = 1:7)。随后在环境温度下通过催化量为1.0 N HCl选择性水解次要抗缩醛的动力学拆分得到纯净的在有机相中为顺缩醛(dr s / a > 99:1),在水相中为反富集的2,4-戊二醇(dr s / a = 1:6),
Provided are a compound and a fragrance composition containing the same, wherein the compound has a spicy tone that is useful as a fragrance, particularly a cumin-like odor, it is stable in an aqueous vehicle, and it emphasizes spicy-, green-, floral-, woody-, and citrus-like various odors by being blended with other fragrances, which allows oil-, chemical-, and metallic-like undesirable odors to be suppressed. A nitrile compound represented by Formula (I-3), Formula (I-2), or Formula (I-1).
Ink composition, inkjet recording method, printed material, process for producing lithographic printing plate, and lithographic printing plate
申请人:FUJI PHOTO FILM CO., LTD.
公开号:EP1721943A1
公开(公告)日:2006-11-15
An ink composition is provided that includes (a) a polymerizable compound, (b) a polymerization initiator, (c) a coloring agent, and (d) a fragrance. There is also provided an inkjet recording method that includes a step of discharging the ink composition onto a recording medium, and a step of irradiating the discharged ink composition with radiation so as to cure the ink composition.
AROMATIC AGENT COMPOSITION FOR OPENABLE STORAGE SPACE
申请人:Kobayashi Pharmaceutical Co., Ltd.
公开号:EP2263700A1
公开(公告)日:2010-12-22
An object of the present invention is to provide an aromatic agent composition to be used in an openable storage space that is capable of maintaining a constant and homogeneous aroma intensity in a closed storage space, and capable of maintaining aroma emission at a constant and homogeneous intensity in a storage space that is occasionally opened and closed.
The present invention uses, as a solvent of an aromatic agent composition, a paraffinic hydrocarbon having a boiling point of 70 to 220°C under ordinary pressure so that the paraffinic hydrocarbon is present in an amount of 15 to 90 wt%.
NITRILE COMPOUND, METHOD OF PREPARATION THEREOF AND FRAGRANCE COMPOSITION COMPRISING THE NITRILE COMPOUND
申请人:Kao Corporation
公开号:EP2940005B1
公开(公告)日:2017-04-05
DEODORANT/FRAGRANT DEVICE, VOLATILIZING MATERIAL FOR USE IN THE SAME, PROCESS FOR PRODUCING THE VOLATILIZING MATERIAL, AND METHOD OF DEODORIZING/PERFUMING
申请人:Narisada Naoyuki
公开号:US20100061886A1
公开(公告)日:2010-03-11
The present invention is directed to a deodorant/fragrant device with reduced adsorption of the fragrance and other ingredients contained in a fragrant liquid, having both excellent deodorizing function and perfuming function, wherein a fragrant liquid contained in a container is absorbed by a wick and the fragrant liquid absorbed is volatilized and released from the container through a volatilizing material placed in contact with the wick, wherein a zinc compound is carried on the volatilizing material.