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    Method of producing alkanesulfonic acid
    2.
    发明授权
    Method of producing alkanesulfonic acid 有权
    烷基磺酸的生产方法

    公开(公告)号：US06531629B1

    公开(公告)日：2003-03-11

    申请号：US09831362

    申请日：2001-05-15

    Applicant: Matthias Eiermann ,  Christian Tragut ,  Klaus Ebel

    Inventor： Matthias Eiermann ,  Christian Tragut ,  Klaus Ebel

    IPC: C07C30316

    CPC classification number: C07C303/16 ,  C07C309/04

    Abstract: The invention relates to a process for the prepartaion of alkanesulfonic acids, comprising the following steps: (a) oxidation of alkylmercaptans and/or dialkyl disulfides and/or dialkyl polysulfides having from three to nine sulfur atoms with nitric acid to form alkanesulfonic acids, water, nitrogen oxides and other byproducts, (b) regeneration of the nitrogen oxides obtained from step (a) with oxygen to give nitric acid and recycling of the nitric acid to step (a), where steps (a) and (b) are carried out in reaction chambers separate from one another.

    Abstract translation: 本发明涉及一种预聚烷基磺酸的方法，包括以下步骤：（a）用硝酸将具有3-9个硫原子的烷基硫醇和/或二烷基二硫化物和/或二烷基多硫化物氧化形成烷烃磺酸，水 ，氮氧化物和其它副产物，（b）用氧气再生由步骤（a）获得的氮氧化物，得到硝酸并将硝酸再循环至步骤（a），其中步骤（a）和（b） 在反应室中彼此分离。

    Method for producing lactams
    5.
    发明授权
    Method for producing lactams 失效
    生产内酰胺的方法

    公开(公告)号：US06353101B1

    公开(公告)日：2002-03-05

    申请号：US09555606

    申请日：2000-05-31

    Applicant: Matthias Eiermann ,  Thomas Narbeshuber

    Inventor： Matthias Eiermann ,  Thomas Narbeshuber

    IPC: C07D20108

    CPC classification number: B01J23/007 ,  C07D201/08

    Abstract: The invention relates to a process for preparing lactams by cyclizing hydrolysis of amino nitriles with water in the gas phase on catalysts which comprise oxides or mixed oxides of the metals of groups 3, 4, 5, 13 and/or 14 of the Periodic Table, where appropriate in addition a metal oxide of groups 6, 7, 8, 9 and/or 10, and further comprise a phosphate, carbonate, silicate, arsenite, arsenate, antimonite, antimonate and/or nitrate of said metals and/or, if metal oxides of groups 6, 7, 8, 9 or 10 are present, a sulfate of the abovementioned metals.

    Abstract translation: 本发明涉及一种制备内酰胺的方法，该方法通过在气相中用水环化水解氨基腈，在包含周期表第3,4,5,13和/或14族金属的氧化物或混合氧化物的催化剂上， 另外还可以含有第6,7,8,9和/或10族金属氧化物，并且还包含所述金属的磷酸盐，碳酸盐，硅酸盐，亚砷酸盐，砷酸盐，锑酸盐，锑酸盐和/或硝酸盐和/或如果 存在第6,7,8,9或10族的金属氧化物，是上述金属的硫酸盐。

    Preparation of alkyl 5-oxo-6-heptenoates, and novel intermediate for the preparation thereof
    7.
    发明授权
    Preparation of alkyl 5-oxo-6-heptenoates, and novel intermediate for the preparation thereof 失效
    5-氧代-6-庚烯酸烷基酯的制备及其制备的新型中间体

    公开(公告)号：US5659070A

    公开(公告)日：1997-08-19

    申请号：US595051

    申请日：1996-02-01

    Applicant: Klaus Ebel ,  Matthias Eiermann ,  Thomas Papkalla

    Inventor： Klaus Ebel ,  Matthias Eiermann ,  Thomas Papkalla

    IPC: C07C67/333 ,  C07C69/738 ,  C07C69/73

    CPC classification number: C07C69/738 ,  C07C67/333

    Abstract: A process for preparing alkyl 5-oxo-6-heptenoates of the formula I ##STR1## where X and Y are hydrogen or methyl, and R.sup.1 is C.sub.1 -C.sub.8 -alkyl, byA) reacting 5-acetyl-2-norbornene with a dialkyl carbonate [CO(OR.sup.2).sub.2, where R.sup.2 is C.sub.1 -C.sub.4 -alkyl,] in the presence of a base to give an alkyl 3-(2-norbornen-5-yl)-3-oxopropionate II,B) reacting the ester II on the presence of a base with an unsaturated compound of the formula III ##STR2## where Z is CN or CO.sub.2 R.sup.3, where R.sup.3 is C.sub.1 -C.sub.4 -alkyl, and hydrolyzing the product of the reaction of compound II with compound III to a 5-(2-norbornen-5-yl)-5-oxopentanoic acid of the formula IV,C) esterifying the acid IV to give a 5-(2-norbornen-5-yl)-5-oxopentanoic ester of the formula V, andD) converting the ester V by thermal cleavage into an alkyl 5-oxo-6-heptenoate I. The invention also relates to intermediates for preparing the esters I, to the use thereof and to an improved process for preparing alkyl 3-(2-norbornen-5-yl)-3-oxopropionates.

    Abstract translation: 制备式I的烷基5-氧代-6-庚烯酸酯的方法，其中X和Y是氢或甲基，R 1是C 1 -C 8烷基，A）使5-乙酰基-2- 降冰片烯与碳酸二烷基酯[CO（OR 2）2，其中R 2是C 1 -C 4 - 烷基）]在碱的存在下反应，得到3-（2-降冰片烯-5-基）-3-氧代丙酸烷基酯II，B ）在碱存在下使酯II与式III的不饱和化合物（III）反应，其中Z是CN或CO 2 R 3，其中R 3是C 1 -C 4烷基，并水解化合物的反应产物 II化合物与式IV的5-（2-降冰片烯-5-基）-5-氧代戊酸反应，C）酯化酸IV，得到5-（2-降冰片烯-5-基）-5- 式V的氧代戊酸酯，和D）通过热裂解将酯V转化为5-氧代-6-庚烯酸酯I。本发明还涉及制备酯I的中间体及其改进方法 用于制备3-（2-降冰片烯-5-基）-3-氧代丙酸烷基酯。

    Preparation of methane sulfonic acid
    10.
    发明授权
    Preparation of methane sulfonic acid 失效
    甲磺酸的制备

    公开(公告)号：US06207025B1

    公开(公告)日：2001-03-27

    申请号：US09269759

    申请日：1999-04-08

    Applicant: Matthias Eiermann ,  Thomas Papkalla

    Inventor： Matthias Eiermann ,  Thomas Papkalla

    IPC: C07C30300

    CPC classification number: C07C303/14 ,  C07C309/04

    Abstract: A process for preparing methanesulfonic acid by irradiating a mixture comprising acetic acid, sulfur dioxide and oxygen with light, wherein the reaction mixture is irradiated with an average cumulative irradiance in the range from 240 to 320 mm of from 0.05 to 50 mmol quanta/cm2h at the light entry area.

    Abstract translation: 通过用光照射包含乙酸，二氧化硫和氧气的混合物来制备甲磺酸的方法，其中反应混合物在240至320mm范围内的平均累积辐照度为0.05至50mmol量子/ cm 2h， 光入口区域。

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