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    • 7. 发明授权
    • Process for producing wine lactone
    • 生产葡萄酒内酯的方法
    • US08481759B2
    • 2013-07-09
    • US13483373
    • 2012-05-30
    • Kenji YagiYasuhiro KomatsukiHideo UjiharaKenya Ishida
    • Kenji YagiYasuhiro KomatsukiHideo UjiharaKenya Ishida
    • C07D305/12
    • C07D307/83C07D307/77
    • The present invention relates to a method comprising (A) reacting a β-keto ester with a 2-halo ester under basic conditions to obtain a 2-aceto-3-methyl-succinic acid ester; (B) reacting the resulting 2-aceto-3-methyl-succinic acid ester with methyl vinyl ketone under basic conditions, optionally followed by a decarboxylation reaction and hydrolysis, etc., to obtain an α-methyl-γ-keto acid; and (C) reducing the resulting α-methyl-γ-keto acid to obtain wine lactone or a stereoisomer thereof or a mixture thereof. Alternatively, the present invention relates to a method comprising step (A) as recited above; (B) reacting the resulting 2-aceto-3-methyl-succinic acid ester with methyl vinyl ketone under basic conditions, followed by decarboxylation reaction to obtain an α-methyl-γ-keto acid ester; and (E) reducing the resulting α-methyl-γ-keto acid ester in the presence of a ruthenium complex having a specific structure and in the presence of a hydrogen donor to obtain wine lactone or a stereoisomer thereof or a mixture thereof.
    • 本发明涉及包含(A)在碱性条件下使β-酮酯与2-卤代酯反应得到2-乙酰-3-甲基 - 琥珀酸酯的方法; (B)在碱性条件下使所得2-乙酰-3-甲基 - 琥珀酸酯与甲基乙烯基酮反应,任选地进行脱羧反应和水解等,得到α-甲基-γ-酮酸; 和(C)将所得的α-甲基-γ-酮酸还原得到葡萄酒内酯或其立体异构体或其混合物。 或者,本发明涉及包含上述步骤(A)的方法; (B)在碱性条件下使所得的2-乙酰-3-甲基 - 琥珀酸酯与甲基乙烯基酮反应,然后进行脱羧反应,得到α-甲基-γ-酮酸酯; 和(E)在具有特定结构的钌络合物和氢供体存在下还原所得的α-甲基-γ-酮酸酯以获得葡萄糖内酯或其立体异构体或其混合物。
    • 8. 发明申请
    • PROCESS FOR PRODUCING WINE LACTONE
    • 生产葡萄酒的方法
    • US20130030193A1
    • 2013-01-31
    • US13483373
    • 2012-05-30
    • Kenji YagiYasuhiro KomatsukiHideo UjiharaKenya Ishida
    • Kenji YagiYasuhiro KomatsukiHideo UjiharaKenya Ishida
    • C07D307/83
    • C07D307/83C07D307/77
    • The present invention relates to a method comprising (A) reacting a β-keto ester with a 2-halo ester under basic conditions to obtain a 2-aceto-3-methyl-succinic acid ester; (B) reacting the resulting 2-aceto-3-methyl-succinic acid ester with methyl vinyl ketone under basic conditions, optionally followed by a decarboxylation reaction and hydrolysis, etc., to obtain an α-methyl-γ-keto acid; and (C) reducing the resulting α-methyl-γ-keto acid to obtain wine lactone or a stereoisomer thereof or a mixture thereof. Alternatively, the present invention relates to a method comprising step (A) as recited above; (B) reacting the resulting 2-aceto-3-methyl-succinic acid ester with methyl vinyl ketone under basic conditions, followed by decarboxylation reaction to obtain an α-methyl-γ-keto acid ester; and (E) reducing the resulting α-methyl-γ-keto acid ester in the presence of a ruthenium complex having a specific structure and in the presence of a hydrogen donor to obtain wine lactone or a stereoisomer thereof or a mixture thereof.
    • 本发明涉及一种方法,其包括(A)在碱性条件下使β-卤代酯与2-卤代酯反应,得到2-乙酰-3-甲基 - 琥珀酸酯; (B)在碱性条件下使所得2-乙酰-3-甲基 - 琥珀酸酯与甲基乙烯基酮反应,任选地进行脱羧反应和水解等,得到α-甲基-γ-酮酸; 和(C)将所得α-甲基-γ-酮酸还原得到葡萄酒内酯或其立体异构体或其混合物。 或者,本发明涉及包含上述步骤(A)的方法; (B)在碱性条件下使所得2-乙酰-3-甲基 - 琥珀酸酯与甲基乙烯基酮反应,然后进行脱羧反应,得到α-甲基-γ-酮酸酯; 和(E)在具有特定结构的钌络合物存在下,在氢供体存在下还原所得的α-甲基-γ-酮酸酯,得到葡萄糖内酯或其立体异构体或其混合物。
    • 9. 发明申请
    • METHOD FOR PRODUCING OPTICALLY ACTIVE a-IONONE
    • 用于生产光学活性α-离子的方法
    • US20110118500A1
    • 2011-05-19
    • US13012199
    • 2011-01-24
    • Tetsuya YamamotoKenji YagiKenya Ishida
    • Tetsuya YamamotoKenji YagiKenya Ishida
    • C07C69/78C07C69/533C07C69/63C07C69/24C07C69/708
    • C12P7/26A23L2/56A23L27/204A61K8/37A61Q11/00A61Q13/00C07B53/00C07B2200/07C07C403/08C07C403/12C07C403/14C07C2601/16C12G3/06C12P41/004
    • Provided that a method for inexpensively producing optically active α-ionone with a high yield and a high asymmetric yield and with good workability in a short process, and a perfume composition comprising the optically active α-ionone obtained by the aforementioned method. A method for producing optically active α-ionone, comprising allowing α-ionone as a mixture of optical isomers to react with an esterification agent, and hydrolyzing the obtained α-ionone enol ester; a method for producing optically active α-ionone comprising subjecting α-ionone as a mixture of optical isomers to an asymmetric reduction, allowing the obtained optically active α-ionol to react with an esterification agent to give an optically active α-ionol ester, hydrolyzing the obtained optically active α-ionol ester after purification as necessary, and then oxidizing the obtained optically active α-ionol; and a perfume composition comprising thus obtained optically active α-ionone.
    • 本发明提供了一种低成本地生产光学活性α-紫罗兰酮的方法,其具有高产率和高不对称产率,并且在短时间内具有良好的可加工性,以及包含通过上述方法获得的光学活性α-紫罗兰酮的香料组合物。 一种光学活性α-紫罗兰酮的制造方法,其特征在于,使作为旋光异构体的混合物的α-紫罗烯酮与酯化反应,水解得到的α-紫罗烯酮烯醇酯; 一种光学活性α-紫罗兰酮的制造方法,其特征在于,将α-紫罗烯酮作为光学异构体的混合物进行不对称还原,使得所得光学活性α-离子酚与酯化反应,得到光学活性α-离子醇酯,水解 根据需要纯化后得到的光学活性α-离子醇酯,然后氧化所得光学活性α-离子醇; 和包含这样得到的光学活性α-紫罗兰酮的香料组合物。