会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 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。