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212 条记录 (耗时 0.017 秒)

    Method of producing 3-bromobenzaldehyde
    61.
    发明授权
    Method of producing 3-bromobenzaldehyde 失效
    生产3-溴苯甲醛的方法

    公开(公告)号：US4945186A

    公开(公告)日：1990-07-31

    申请号：US455782

    申请日：1990-01-02

    申请人： Shinichi Matsuura ,  Osamu Miyano

    发明人： Shinichi Matsuura ,  Osamu Miyano

    IPC分类号： B01J27/125 ,  C07C45/00 ,  C07C45/63 ,  C07C47/55 ,  C07C67/00

    CPC分类号： C07C45/63

    摘要： A method of producing 3-bromobenzaldehyde is disclosed, wherein, upon producing 3-bromobenzaldehyde by allowing benzaldehyde to react with bromine in the presence of brominating catalyst in 1,2-dichloroethane being a reaction solvent, 1,2-dichloroethane having been used for aforesaid reaction as a reaction solvent is recovered and, after the recovered solvent is allowed first to react with chlorine in the presence of above brominating catalyst, the reaction is performed by the addition of benzaldehyde and bromine. Foregoing 1,2-dichloroethane recovered may be brought to the reaction with chlorine with or without adding fresh 1,2-dichloroethane and above brominating catalyst is preferably aluminum chloride.

    摘要翻译： 公开了一种生产3-溴苯甲醛的方法，其中在溴代催化剂存在下，在1,2-二氯乙烷为反应溶剂中，通过使苯甲醛与溴反应生成3-溴苯甲醛时，将1,2-二氯乙烷用于 回收作为反应溶剂的上述反应，在回收的溶剂首先在上述溴化催化剂存在下与氯反应后，通过加入苯甲醛和溴进行反应。 回收的前述1,2-二氯乙烷可与带有或不加入新鲜的1,2-二氯乙烷的氯反应，并且上述溴化催化剂优选为氯化铝。

    Process for producing fluorobenzaldehydes
    65.
    发明授权
    Process for producing fluorobenzaldehydes 失效
    氟苯甲醛生产工艺

    公开(公告)号：US4845304A

    公开(公告)日：1989-07-04

    申请号：US190087

    申请日：1988-05-04

    申请人： Yasuo Yoshida ,  Yoshikazu Kimura

    发明人： Yasuo Yoshida ,  Yoshikazu Kimura

    IPC分类号： C07C45/63 ,  C07C47/55

    CPC分类号： C07C47/55 ,  C07C45/63

    摘要： A process for producing a fluorobenzaldehyde of the formula: ##STR1## wherein X is a chlorine atom, a bromine atom or an iodine atom, n is an integer of from 1 to 5, and m is an integer of from 1 to 5, provided n.gtoreq.m, which comprises reacting a halogenated benzaldehyde of the formula: ##STR2## wherein X and n are as defined above, with a metal fluoride in the presence of a catalyst, wherein at least one member selected from the group consisting of quaternary phosphonium salts and quaternary ammonium salts is used as the catalyst.

    Alpha, beta-substituted acroleins
    66.
    发明授权
    Alpha, beta-substituted acroleins 失效
    α，β-取代的丙烯醛

    公开(公告)号：US4804785A

    公开(公告)日：1989-02-14

    申请号：US97113

    申请日：1987-09-16

    申请人： Bernd Janssen ,  Stefan Karbach ,  Hans-Gert Recker ,  Marco Thyes

    发明人： Bernd Janssen ,  Stefan Karbach ,  Hans-Gert Recker ,  Marco Thyes

    IPC分类号： C07C47/238 ,  C07C45/00 ,  C07C45/51 ,  C07C47/21 ,  C07C47/22 ,  C07C47/228 ,  C07C47/232 ,  C07C47/24 ,  C07C47/277 ,  C07C67/00 ,  C07D301/12 ,  C07D303/14 ,  C07D303/16 ,  C07D303/32 ,  C07C47/55 ,  C07C47/546

    CPC分类号： C07D303/16 ,  C07C205/44 ,  C07C45/515 ,  C07C47/21 ,  C07C47/232 ,  C07C47/24 ,  C07C47/277 ,  C07D303/14

    摘要： Alpha,beta-substituted acroleins of the general formula I ##STR1## where A and B are identical or different and are each C.sub.1 -C.sub.4 -alkyl, naphthyl, biphenyl or phenyl which may be monosubstituted or polysubstituted by halogen, nitro, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -haloalkyl, phenoxy or phenylsulfonyl, are prepared by a process in which a compound of the general formula III ##STR2## where A has the above meanings and R.sup.1 and R.sup.2 are identical or different and are each C.sub.1 -C.sub.4 -alkyl or together possess the carbon atoms required to complete a ring, is reacted with a phosphorus compound of the general formula IV or V ##STR3## where B the meanings stated above, R.sup.1 and R.sup.2 are as defined above and X.sup..crclbar. is a halide ion, in the presence of a base. The alpha,beta-substituted acroleins can be further processed to give hydroxymethyloxiranes.

    摘要翻译： α，β取代的通式I（I）的丙烯醛，其中A和B是相同或不同的并且各自是可被卤素，硝基， C 1 -C 4 - 烷基，C 1 -C 4 - 烷氧基，C 1 -C 4卤代烷基，苯氧基或苯基磺酰基，其中A为具有上述含义的通式III（III）的化合物和R 1 和R 2相同或不同，并且各自为C 1 -C 4烷基或一起具有完成环所需的碳原子，与通式IV或V的磷化合物反应（V） ）其中B为上述含义，R1和R2如上所定义，X（ - ）为卤素离子，在碱的存在下。 α，β-取代的丙烯醛可以进一步加工得到羟基甲基环氧乙烷。

    Biaryl aldehyde
    70.
    发明授权
    Biaryl aldehyde 失效
    二芳基醛

    公开(公告)号：US4578522A

    公开(公告)日：1986-03-25

    申请号：US650981

    申请日：1984-09-14

    申请人： John F. Eaddy, III

    发明人： John F. Eaddy, III

    IPC分类号： C07C45/51 ,  C07C47/55 ,  C07C51/00 ,  C07C51/16 ,  C07F15/00

    CPC分类号： C07F15/006 ,  C07C45/513 ,  C07C47/55 ,  C07C51/00 ,  C07C51/16

    摘要： This invention relates to a method of synthesis of certain substituted carboxylic acids useful in lowering serum triglyceride and total cholesterol levels in mammals (including man) represented by the general formula I:Ar.sup.1 --Ar.sup.2 (I)whereinAr.sup.1 is selected from ##STR1## Ar.sup.2 is selected from ##STR2## and R is selected from C.sub.1-5 alkyl, halogen, perhalo-C.sub.1-4 alkyl, C.sub.1-4 alkoxy, phenyl, C.sub.1-4 acyl, C.sub.1-6 alkoxycarbonyl, amino or hydroxy.

    摘要翻译： 本发明涉及一种合成某些通式I所示哺乳动物（包括人）中血清甘油三酯和总胆固醇水平的取代羧酸的方法：Ar1-Ar2（I）其中Ar1选自Ar2 选自，R选自C 1-5烷基，卤素，全卤代-C 1-4烷基，C 1-4烷氧基，苯基，C 1-4酰基，C 1-6烷氧基羰基，氨基或羟基。