Process for producing a diaryl carbonate
    3.
    发明授权
    Process for producing a diaryl carbonate 失效
    制备碳酸二芳基酯的方法

    公开(公告)号:US5731453A

    公开(公告)日:1998-03-24

    申请号:US814089

    申请日:1997-03-10

    摘要: A diaryl carbonate with a high degree of purity is produced at a high yield by (A) subjecting (a) a diaryl oxalate and a phenol compound or (b) an alkylaryl oxalate to transesterification reaction in one or two stages in the presence of a catalyst to prepare a diaryl oxalate, while removing a by-product from the reaction system; (B) collecting the diaryl oxalate from the resultant reaction product mixture of the step (A); (C) subjecting the diaryl oxalate to a decarbonylation reaction, preferably in the presence of a phosphorous compound-containing catalyst, to convert the diaryl oxalate to a corresponding diaryl carbonate, while removing a reaction by-product comprising carbon monoxide from the reaction system; and (D) collecting the diaryl carbonate from the reaction product mixture of the step (C).

    摘要翻译: 通过(A)在(a)草酸二芳基酯和酚化合物或(b)草酸烷基芳基酯在一个或两个阶段中存在下进行酯交换反应,以高产率生产具有高纯度的碳酸二芳基酯 催化剂,以制备草酸二芳基酯,同时从反应体系中除去副产物; (B)从所得步骤(A)的反应产物混合物中收集草酸二芳基酯; (C)优选在含磷化合物的催化剂存在下使草酸二芳基酯进行脱羰反应,将草酸二芳基酯转化为相应的碳酸二芳基酯,同时从反应体系中除去包含一氧化碳的反应副产物; 和(D)从步骤(C)的反应产物混合物中收集碳酸二芳基酯。

    Process for producing a diaryl carnonate
    4.
    发明授权
    Process for producing a diaryl carnonate 失效
    生产碳酸二芳酯的方法

    公开(公告)号:US5811573A

    公开(公告)日:1998-09-22

    申请号:US988759

    申请日:1997-12-11

    摘要: A diaryl carbonate with a high degree of purity is produced at a high yield by (A) subjecting (a) a diaryl oxalate and a phenol compound or (b) an alkylaryl oxalate to transesterification reaction in one or two stages in the presence of a catalyst to prepare a diaryl oxalate, while removing a by-product from the reaction system; (B) collecting the diaryl oxalate from the resultant reaction product mixture of the step (A); (C) subjecting the diaryl oxalate to a decarbonylation reaction, preferably in the presence of a phosphorous compound-containing catalyst, to convert the diaryl oxalate to a corresponding diaryl carbonate, while removing a reaction by-product comprising carbon monoxide from the reaction system; and (D) collecting the diaryl carbonate from the reaction product mixture of the step (C).

    摘要翻译: 通过(A)在(a)草酸二芳基酯和酚化合物或(b)草酸烷基芳基酯在一个或两个阶段中存在下进行酯交换反应,以高产率生产具有高纯度的碳酸二芳基酯 催化剂,以制备草酸二芳基酯,同时从反应体系中除去副产物; (B)从所得步骤(A)的反应产物混合物中收集草酸二芳基酯; (C)优选在含磷化合物的催化剂存在下使草酸二芳基酯进行脱羰反应,将草酸二芳基酯转化为相应的碳酸二芳基酯,同时从反应体系中除去包含一氧化碳的反应副产物; 和(D)从步骤(C)的反应产物混合物中收集碳酸二芳基酯。

    Diphenyl oxalate-phenol adduct, process for producing the adduct and
method of producing diphenyl oxalate from the adduct
    5.
    发明授权
    Diphenyl oxalate-phenol adduct, process for producing the adduct and method of producing diphenyl oxalate from the adduct 失效
    草酸二苯酚 - 苯酚加合物,加合物的制备方法和从加合物生产草酸二苯酯的方法

    公开(公告)号:US5705677A

    公开(公告)日:1998-01-06

    申请号:US757070

    申请日:1996-11-26

    IPC分类号: C07C69/017 C07C69/36

    CPC分类号: C07C69/017 C07C69/36

    摘要: A novel crystalline adduct of diphenyl oxalate and phenol in a molar ratio of 1:2 and having a high purity is produced by melting a mixture containing diphenyl oxalate and phenol at a temperature of 100.degree. C. or more; cooling the melt to a temperature of less than 100.degree. C. to allow a resultant adduct of diphenyl oxalate and phenol in a molar ratio of 1:2 to crystallize and deposit from the melt; and collecting the crystalline adduct. Diphenyl oxalate with a high purity is produced by melting the crystalline adduct to dissociate it into diphenyl oxalate and phenol, and evaporating away the dissociated phenol from the melt to collect the dissociated diphenyl oxalate.

    摘要翻译: 通过在100℃或更高的温度下熔化含有草酸二苯酯和苯酚的混合物,产生摩尔比为1:2且具有高纯度的草酸二苯酯和苯酚的新型结晶加合物; 将熔体冷却至低于100℃的温度,使所得到的草酸二苯酯和苯酚的摩尔比为1:2的加合物从熔体中结晶和沉积; 并收集结晶加合物。 通过熔化结晶加合物将其分解成草酸二苯酯和苯酚,并将离解的苯酚从熔体中蒸发掉以收集离解的草酸二苯酯,从而产生高纯度的二苯基草酸盐。

    Process for producing a diaryl oxalate
    6.
    发明授权
    Process for producing a diaryl oxalate 失效
    制备草酸二芳基酯的方法

    公开(公告)号:US6018072A

    公开(公告)日:2000-01-25

    申请号:US875823

    申请日:1997-08-07

    IPC分类号: C07C67/02 C07C69/34

    CPC分类号: C07C67/02

    摘要: The present invention relates to a process for producing a diaryl oxalate, characterized in that an alkylaryl oxalate is subjected to a disproportionation reaction in the presence of a disproportionation catalyst, thereby to produce a diaryl oxalate while removing a by-product comprising a dialkyl oxalate.The production process of the present invention is advantageous in that the kinds of the by-products are fewer than that in conventional production process for diaryl oxalate, and thus can be practically utilized in industry, and the diaryl oxalates such as diphenyl oxalate, produced by the production process of the present invention are very important industrial materials for producing chemical products such as carbamates.

    摘要翻译: PCT No.PCT / JP96 / 03636 Sec。 371日期1997年8月7日 102(e)日期1997年8月7日PCT 1996年12月12日PCT PCT。 公开号WO97 / 21660 日期:1997年6月19日本发明涉及草酸二芳基酯的制备方法,其特征在于草酸烷基芳基酯在歧化催化剂存在下进行歧化反应,从而产生草酸二芳基酯,同时除去副产物 包括草酸二烷基酯。 本发明的制造方法的优点在于副产物的种类比常规的草酸二芳基酯的制备方法少,因此可以实际应用于工业中,草酸二芳基酯如草酸二苯酯,由 本发明的生产方法是用于生产化学产品如氨基甲酸酯的非常重要的工业材料。

    METHOD OF RETAINING THE QUALITY OF 2-METHYL-3-(3,4-METHYLENEDIOXYPHENYL)PROPANAL AND PROCESS FOR PRODUCING THE SAME
    7.
    发明申请
    METHOD OF RETAINING THE QUALITY OF 2-METHYL-3-(3,4-METHYLENEDIOXYPHENYL)PROPANAL AND PROCESS FOR PRODUCING THE SAME 有权
    保留2-甲基-3-(3,4-亚甲基二苯基)丙酸的质量的方法及其制备方法

    公开(公告)号:US20130046101A1

    公开(公告)日:2013-02-21

    申请号:US13654805

    申请日:2012-10-18

    IPC分类号: C07D317/54

    CPC分类号: C07D317/54

    摘要: The present invention relates to [1] a method for keeping a quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal useful as a perfume, which comprises incorporating from 50 to 3000 ppm of 1-acetyl-3,4-methylenedioxybenzene in the 2-methyl-3-(3,4-methylenedioxyphenyl)propanal; [2] a process for producing 2-methyl-3-(3,4-methylenedioxyphenyl)propanal having a content range from to 3000 ppm of 1-acetyl-3,4-methylenedioxybenzene; and [3]2-methyl-3-(3,4-methylenedioxyphenylpropanal having a content range from 50 to 3000 ppm of of 1-acetyl-3,4-methylenedioxybenzene.

    摘要翻译: 本发明涉及[1]一种用作保持2-甲基-3-(3,4-亚甲二氧基苯基)丙醛的质量的方法,其用作香料,其包括将50-3000ppm的1-乙酰基-3,4 - 亚甲二氧基苯在2-甲基-3-(3,4-亚甲二氧基苯基)丙醛中; [2] 1-乙酰基-3,4-亚甲二氧基苯含量为3000ppm的2-甲基-3-(3,4-亚甲二氧基苯基)丙醛的方法。 和[3-] 1-乙酰基-3,4-亚甲二氧基苯含量为50-3000ppm的2-甲基-3-(3,4-亚甲二氧基苯基丙醛)。

    Method of retaining the quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal and process for producing the same
    8.
    发明授权
    Method of retaining the quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal and process for producing the same 有权
    保持2-甲基-3-(3,4-亚甲二氧基苯基)丙醛质量的方法及其制备方法

    公开(公告)号:US08039649B2

    公开(公告)日:2011-10-18

    申请号:US12529719

    申请日:2008-03-06

    IPC分类号: C07D317/44

    CPC分类号: C07D317/54

    摘要: The present invention relates to [1] a method for keeping a quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal useful as a perfume, which comprises incorporating from 50 to 3000 ppm of 1-acetyl-3,4-methylenedioxybenzene in the 2-methyl-3-(3,4-methylenedioxyphenyl)propanal; [2] a process for producing 2-methyl-3-(3,4-methylenedioxyphenyl)propanal having a content range from 50 to 3000 ppm of 1-acetyl-3,4-methylenedioxybenzene; and [3] 2-methyl-3-(3,4-methylenedioxyphenyl)propanal having a content range from 50 to 3000 ppm of 1-acetyl-3,4-methylenedioxybenzene.

    摘要翻译: 本发明涉及[1]一种用作保持2-甲基-3-(3,4-亚甲二氧基苯基)丙醛的质量的方法,其用作香料,其包括将50-3000ppm的1-乙酰基-3,4 - 亚甲二氧基苯在2-甲基-3-(3,4-亚甲二氧基苯基)丙醛中; [2] 1-乙酰基-3,4-亚甲二氧基苯含量范围为50-3000ppm的2-甲基-3-(3,4-亚甲二氧基苯基)丙醛的方法。 和[3] 2-乙酰基-3,4-亚甲二氧基苯含量范围为50-3000ppm的2-甲基-3-(3,4-亚甲二氧基苯基)丙醛。

    Process for preparing aromatic aldehyde compound
    9.
    发明授权
    Process for preparing aromatic aldehyde compound 有权
    制备芳香族醛化合物的方法

    公开(公告)号:US08618335B2

    公开(公告)日:2013-12-31

    申请号:US13122834

    申请日:2009-10-06

    IPC分类号: C07C45/29 C07D317/54

    摘要: An object of the present invention is to provide an industrially advantageous process for preparing a benzaldehyde compound from a benzyl alcohol compound with high yield.The present invention relates to a process for preparing an aromatic aldehyde compound represented by the formula (2); which comprises reacting an aromatic methyl alcohol compound represented by the formula (1); and a peroxide under a pH value of a reaction solution being pH 0.01 or higher and less than 10 in the presence of at least one metallic compound selected from a molybdenum compound and a tungsten compound, a quaternary ammonium salt and an organic phosphonium salt.

    摘要翻译: 本发明的目的是提供一种从苯甲醇化合物以高产率制备苯甲醛化合物的工业上有利的方法。 本发明涉及一种制备由式(2)表示的芳族醛化合物的方法; 其包括使由式(1)表示的芳族甲醇化合物反应; 和在至少一种选自钼化合物和钨化合物的金属化合物,季铵盐和有机鏻盐的存在下,反应溶液的pH值为0.01以上且小于10的过氧化物。

    Method of retaining the quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal and process for producing the same
    10.
    发明授权
    Method of retaining the quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal and process for producing the same 有权
    保持2-甲基-3-(3,4-亚甲二氧基苯基)丙醛质量的方法及其制备方法

    公开(公告)号:US08450508B2

    公开(公告)日:2013-05-28

    申请号:US13654805

    申请日:2012-10-18

    IPC分类号: C07D317/44

    CPC分类号: C07D317/54

    摘要: The present invention relates to [1] a method for keeping a quality of 2-methyl-3-(3,4-methylenedioxyphenyl)propanal useful as a perfume, which comprises incorporating from 50 to 3000 ppm of 1-acetyl-3,4-methylenedioxybenzene in the 2-methyl-3-(3,4-methylenedioxyphenyl)propanal; [2] a process for producing 2-methyl-3-(3,4-methylenedioxyphenyl)propanal having a content range from 50 to 3000 ppm of 1-acetyl-3,4-methylenedioxybenzene; and [3]2-methyl-3-(3,4-methylenedioxyphenylpropanal having a content range from 50 to 3000 ppm of of 1-acetyl-3,4-methylenedioxybenzene.

    摘要翻译: 本发明涉及[1]一种用作保持2-甲基-3-(3,4-亚甲二氧基苯基)丙醛的质量的方法,其用作香料,其包括将50-3000ppm的1-乙酰基-3,4 - 亚甲二氧基苯在2-甲基-3-(3,4-亚甲二氧基苯基)丙醛中; [2] 1-乙酰基-3,4-亚甲二氧基苯含量范围为50-3000ppm的2-甲基-3-(3,4-亚甲二氧基苯基)丙醛的方法。 和[3-] 1-乙酰基-3,4-亚甲二氧基苯含量为50-3000ppm的2-甲基-3-(3,4-亚甲二氧基苯基丙醛)。