Process for the preparation of substituted benzaldehydes
    2.
    发明授权
    Process for the preparation of substituted benzaldehydes 失效
    取代的苯甲醛的制备方法

    公开(公告)号:US4622429A

    公开(公告)日:1986-11-11

    申请号:US640414

    申请日:1984-08-13

    CPC分类号: C07C45/49

    摘要: Substituted benzaldehydes are prepared by reaction of the substituted benzenes from which they are derived with carbon monoxide and hydrogen chloride in the presence of metal halides, the process being performed in the presence of 0.5 to 10 mols of hydrogen chloride per mol of metal halide at a partial pressure of carbon monoxide from 1 to 100 bars and a temperature from -20.degree. C. to +100.degree. C. and, if desired, in the presence of an inert diluent. The substituted benzaldehyde which contains, as a substituent, alkyl with at least 2 carbon atoms, cycloalkyl or optionally substituted benzyl, is prepared by reacting the appropriately substituted benzene with the additional presence of a benzene which does not contain the substituents mentioned, but which is identical in respect of further substituents which are optionally present with the benzene from which it is derived.

    摘要翻译: 取代的苯甲醛通过在金属卤化物存在下使衍生自它们的取代苯与氯化氢反应来制备,该方法是在0.5至10摩尔氯化氢/摩尔金属卤化物存在下进行的 一氧化碳分压为1至100巴,温度为-20℃至+100℃,如果需要,在惰性稀释剂存在下进行。 含有至少2个碳原子的烷基取代的苯甲醛,环烷基或任意取代的苄基,是通过使适当取代的苯与不含上述取代基的苯进一步存在而制备的, 对于任选存在于其衍生的苯的另外的取代基是相同的。

    Process for preparing acid halides
    3.
    发明授权
    Process for preparing acid halides 失效
    制备酰卤的方法

    公开(公告)号:US4863642A

    公开(公告)日:1989-09-05

    申请号:US396513

    申请日:1982-07-08

    CPC分类号: C07C51/58

    摘要: Acid halides of the formula (R.sup.1, R.sup.2, R.sup.3)C--CO--Hal are obtained by reacting alkyl halides of the formula (R.sup.1, R.sup.2, R.sup.3)C--Hal with carbon monoxide under a pressure of 5 to 1,000 bar and at a temperature of -20.degree. C. to +100.degree. C. in the presence of 0.001 to 0.3 mol of AlCl.sub.3 and/or FeCl.sub.3, if appropriate in the presence of a further Bronsted or Lewis acid, per mol of the alkyl halide. The process is carried out, if desired in the presence of a solvent which is customary for Friedel-Crafts or Friedel-Crafts-related reactions and, if appropriate in the presence of a hydrogen halide. The acid chloride can be isolated from the reaction mixture or further reacted.

    摘要翻译: 式(R1,R2,R3)C-CO-Hal的酰卤由式(R1,R2,R3)C-Hal的烷基卤与一氧化碳在5〜1000巴的压力下反应而获得, 在0.001至0.3mol AlCl 3和/或FeCl 3的存在下,如果合适,在另外的布朗斯台德或路易斯酸存在下,每摩尔烷基卤化物在-20℃至+ 100℃的温度下进行。 如果需要,在通常用于Friedel-Crafts或Friedel-Crafts相关反应的溶剂存在下,并且如果合适的话,在卤化氢存在下进行该方法。 酰氯可以从反应混合物中分离出来或进一步反应。

    Process for the preparation of .mu.-amino-acrylic acid esters
    4.
    发明授权
    Process for the preparation of .mu.-amino-acrylic acid esters 失效
    制备μ-氨基 - 丙烯酸酯的方法

    公开(公告)号:US5030747A

    公开(公告)日:1991-07-09

    申请号:US495522

    申请日:1990-03-19

    CPC分类号: C07C227/06

    摘要: .beta.-Amino-acrylic acid esters of the formula(R.sup.1 R.sup.2)NCH.dbd.CR.sup.3 --COOR.sup.4can be obtained by reaction of .beta.-hydroxy-acrylic acid ester alkali metal salts of the formulaMe.sup..sym. .crclbar. OCH.dbd.CR.sup.3 --COOR.sup.4with ammonium salts of the formula(R.sup.1 R.sup.2) NH.sub.2.sup..sym. .crclbar.according to the general reaction equation(R.sup.1 R.sup.2) NH.sub.2 X+MeOCH.dbd.CR.sup.3 --COOR.sup.4 .fwdarw.(R.sup.1 R.sup.2) NCH.dbd.CR.sup.3 --COOR.sup.4 +MeX.dbd.H.sub.2 OR.sup.1, R.sup.2, R.sup.3, R.sup.4, Me.sup..sym. and X.sup..crclbar. having the meaning indicated in the description and the reaction being carried out in an aprotic organic solvent, in which the reaction components are suspended, as the reaction medium and it being possible to replace a part of the aprotic organic solvent by a protic organic solvent which is miscible with the aprotic solvent to give a homogeneous phase.

    摘要翻译: 式(R1R2)NCH = CR3-COOR4的β-氨基 - 丙烯酸酯可以通过将式Me(+)( - )OCH = CR 3 -COOR 4的β-羟基 - 丙烯酸酯碱金属盐与 (R1R2)NH2X + MeOCH = CR3-COOR4 - (R1R2)NCH = CR3-COOR4 + MeX = H2O R1,R2,R3的式(R1R2)NH2(+)( - )的铵盐 ,R4,Me(+)和X( - ),并且反应在其中悬浮反应组分的非质子有机溶剂中作为反应介质进行,并且可以代替 质子有机溶剂是非质子有机溶剂的一部分,其与非质子溶剂混溶以产生均相。

    Process for the preparation of dialkyl carbonates
    5.
    发明授权
    Process for the preparation of dialkyl carbonates 失效
    制备碳酸二甲酯的方法

    公开(公告)号:US5231213A

    公开(公告)日:1993-07-27

    申请号:US910475

    申请日:1992-07-08

    CPC分类号: C07C68/00 Y02P20/582

    摘要: Dialkyl carbonates can be prepared by reaction of carbon monoxide with alkyl nitrites in continuous gas phase reaction, in which a platinum metal halide catalyst on aluminum oxides, aluminum oxide hydrates or aluminum hydroxides as support and, if desired, an additive comprising an antimony, bismuth, aluminum, copper, vanadium, niobium, tantalum, tin, iron, cobalt, nickel compound or a mixture of a plurality thereof on this catalyst are used and hydrogen halide is replaced during the course of the reaction batchwise or continuously in at least the amount which is discharged from the reactor together with the reaction mixture. This results in the formation of dialkyl carbonates in almost quantitative selectivity, while the corresponding dialkyl oxalates can not in most cases be detected. The abovementioned supports are characterized by a BET surface area of more than 1 m.sup.2 /g.

    摘要翻译: 碳酸二烷基酯可以通过在连续气相反应中一氧化碳与亚硝酸烷基酯的反应来制备,其中在氧化铝上的铂金属卤化物催化剂,作为载体的氧化铝水合物或氢氧化铝,以及如果需要,包含锑,铋 在该催化剂上使用铝,铜,钒,铌,钽,锡,铁,钴,镍化合物或其多种混合物,并且在反应过程中间歇或连续地以至少量的量替换卤化氢 其与反应混合物一起从反应器排出。 这导致几乎定量选择性形成碳酸二烷基酯,而在大多数情况下相应的草酸二烷基酯不能被检测到。 上述载体的特征在于BET表面积大于1m 2 / g。

    3-Nitro-acetoacetanilides, processes for their preparation and their use
    7.
    发明授权
    3-Nitro-acetoacetanilides, processes for their preparation and their use 失效
    3-硝基乙酰乙酰苯胺,其制备方法及其用途

    公开(公告)号:US4370499A

    公开(公告)日:1983-01-25

    申请号:US263388

    申请日:1981-05-13

    CPC分类号: C07C265/12

    摘要: 3-Nitro-acetoacetanilides of the formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 independently of one another represent hydrogen, alkyl, cycloalkyl or aryl, it being possible for two of the said radicals to form a cycloaliphatic ring together with the carbon atom on which they are substituents, andR.sup.4 and R.sup.5 independently of one another denote hydrogen, alkyl, aralkyl, aryl, alkoxy, alkylthio, aralkoxy, aralkylthio, aryloxy, arylthio, halogen, nitro or amino disubstituted by alkyl, aralkyl or aryl, andR.sup.4 and R.sup.5, when they are adjacent, can be parts of a fused cycloaliphatic or aromatic ring,are described as well as methods for its preparation such as by reaction of an acetoacetic acid compound with a 3-nitro-aniline under condensation conditions, or, by reaction of an enamine with 3-nitro-phenyl isocyanate. The 3-nitro-acetoacetanilides are useful intermediates in the preparation of coupling components for color photography.

    摘要翻译: 其中R 1,R 2和R 3彼此独立地表示氢,烷基,环烷基或芳基的式“IMAGE”的3-硝基 - 乙酰乙酰替苯胺,所述基团中的两个可能与碳原子一起形成脂环族 R 4和R 5彼此独立地表示氢,烷基,芳烷基,芳基,烷氧基,烷硫基,芳烷氧基,芳烷硫基,芳氧基,芳硫基,卤素,硝基或被烷基,芳烷基或芳基二取代的氨基,R4 和R 5,当它们相邻时可以是稠合的脂环族或芳族环的一部分,并且描述了其制备方法,例如在缩合条件下乙酰乙酸化合物与3-硝基 - 苯胺的反应,或者, 通过烯胺与3-硝基 - 苯基异氰酸酯的反应。 3-硝基 - 乙酰乙酰苯胺是制备用于彩色摄影的偶联组分的有用中间体。

    Process for the production of aromatic isocyanates containing
aromatically bound sulfochloride groups
    8.
    发明授权
    Process for the production of aromatic isocyanates containing aromatically bound sulfochloride groups 失效
    含有芳香结合的磺酰氯基团的芳族异氰酸酯的制备方法

    公开(公告)号:US4359426A

    公开(公告)日:1982-11-16

    申请号:US230193

    申请日:1981-02-02

    IPC分类号: C07C119/048

    CPC分类号: C07C303/06 C07C303/22

    摘要: The instant invention is directed to a process for the production of an aromatic isocyanate containing aromatically bound sulfochloride groups, comprising:(I) reacting(a) an isocyanate or carbamic acid chloride which contains at least one aromatically bound isocyanate group and/or at least one aromatically bound carbamic acid chloride group, successively or simultaneously at 0.degree. to 170.degree. C. with(b) a sulfonating agent and(c) an organic compound containing at least one aromatically bound trihalo methyl group and(II) removing hydrogen chloride from the reaction mixture at 20.degree. to 170.degree. C.

    摘要翻译: 本发明涉及一种用于生产芳香族异氰酸酯的方法,其中含有芳香结合的磺酰氯基团,其包括:(I)使(a)含有至少一个芳族结合的异氰酸酯基团的异氰酸酯或氨基甲酰氯和/或至少 一种芳香结合的氨基甲酰氯基团,在0〜170℃下连续或同时地与(b)磺化剂和(c)含有至少一个芳香结合的三卤代甲基的有机化合物和(II)从 反应混合物在20〜170℃