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公开(公告)号：US5744663A
公开(公告)日：1998-04-28
申请号：US676027
申请日：1996-07-05
CPC分类号： C07C17/08
摘要： It has been found that cyclopentene and hydrogen bromide can be continuously reacted in a simple manner to give cyclopentyl bromide in good yields and good selectivities if the reaction is carried out in the presence of a heterogeneous catalyst. The reaction can be carried out continuously and unreacted cyclopentene and possibly other constituents can be recirculated to the reaction.
摘要翻译： 已经发现，如果反应在非均相催化剂存在下进行，环戊烯和溴化氢可以以简单的方式连续反应得到环戊基溴，产率高，选择性好。 反应可以连续进行，未反应的环戊烯和可能的其它组分可以再循环到反应中。
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公开(公告)号：US5476959A
公开(公告)日：1995-12-19
申请号：US272164
申请日：1994-07-08
申请人： Konrad Hable , Alexander Klausener , Zoltan Kricsfalussy , Heinz Landscheidt , Erich Wolters , Eberhard Zirngiebl
发明人： Konrad Hable , Alexander Klausener , Zoltan Kricsfalussy , Heinz Landscheidt , Erich Wolters , Eberhard Zirngiebl
CPC分类号： C07C68/00
摘要： Dialkyl carbonates can be prepared by reacting carbon monoxide with alkyl nitrites in a continuous gas phase reaction in the presence of a heterogeneous platinum metal catalyst, the activity of this catalyst being maintained by the addition of small amounts of halogen. The dialkyl carbonates are thus formed with almost quantitative selectivity and no deactivation of the catalyst occurs.
摘要翻译： 碳酸二烷基酯可以通过在多相铂金属催化剂的存在下在连续气相反应中使一氧化碳与亚硝酸烷基酯反应制备，该催化剂的活性通过加入少量的卤素来维持。 因此，碳酸二烷基酯以几乎定量的选择性形成，并且不会发生催化剂失活。
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公开(公告)号：US5412147A
公开(公告)日：1995-05-02
申请号：US157779
申请日：1993-11-24
IPC分类号： C07C201/04 , C07C203/00
CPC分类号： C07C201/04
摘要： C.sub.1 -C.sub.6 -Alkyl nitrites can be prepared by reacting nitrogen dioxide with C.sub.1 -C.sub.6 -alcohols, by, in a counterflow-operated column, feeding the alcohol or an alcohol/water mixture into the upper part of the column and the nitrogen dioxide or a nitrogen dioxide/inert gas mixture into the lower part of the column. The resulting alkyl nitrite is removed from the column as the top product and the co-formed nitric acid is removed from the column as the bottom product.
摘要翻译： C 1 -C 6烷基亚硝酸盐可以通过使二氧化氮与C 1 -C 6醇反应来制备，在逆流操作的塔中，将醇或醇/水混合物进料到塔的上部和二氧化氮或 二氧化氮/惰性气体混合物进入塔的下部。 所得到的亚硝酸烷基酯作为顶部产物从塔中除去，共同形成的硝酸作为底部产物从塔中除去。
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公开(公告)号：US5319124A
公开(公告)日：1994-06-07
申请号：US023303
申请日：1993-02-26
CPC分类号： C07C68/00 , Y02P20/582
摘要： Dialkyl carbonates can be prepared by the reaction of carbon monoxide with alkyl nitrites in a continuous gas phase reaction, using a platinum metal catalyst on an amorphous alumosilicate having a content of 30-80 atom% Al, based on the sum of Al and Si, as a support, which catalyst may optionally comprise additional material of a compound of antimony, bismuth, aluminium, copper, vanadium, niobium, tantalum, tin, iron, cobalt, nickel or a mixture of a plurality of these, and hydrogen halide being added in the course of the reaction intermittently or continuously. In this reaction, the dialkyl carbonates are formed with almost quantitative selectivity; the corresponding dialkyl oxalates cannot be detected in most cases.
摘要翻译： 碳酸二烷基酯可以通过一氧化碳与亚硝酸烷基酯在连续气相反应中的反应来制备，使用铂金属催化剂，其含量为30-80原子％Al的无定形铝硅酸盐，基于Al和Si的总和， 作为载体，该催化剂可以任选地包含锑，铋，铝，铜，钒，铌，钽，锡，铁，钴，镍或其中多个的混合物和添加的卤化氢的化合物的附加材料 在反应过程中间歇或连续。 在该反应中，以几乎定量的选择性形成碳酸二烷基酯; 在大多数情况下不能检测到相应的草酸二烷基酯。
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公开(公告)号：US5886232A
公开(公告)日：1999-03-23
申请号：US608651
申请日：1996-02-29
IPC分类号： B01J23/44 , C07B61/00 , C07C45/00 , C07C49/403 , C07C49/463 , C07C49/497 , C07C49/517 , C07C61/08 , C07C67/30 , C07C69/757 , C07C231/12 , C07C233/32
CPC分类号： C07C45/006 , C07C231/12
摘要： Substituted cyclohexanones of the formula ##STR1## where R.sup.1 to R.sup.5 are as defined in the description, can be obtained by catalytic hydrogenation of phenols of the formula ##STR2## where R.sup.1 to R.sup.5 are as defined in the description.The reaction is carried out at from 20.degree. to 250.degree. C., from 1 to 200 bar and in an ether as solvent. If desired, an alkaline alkali metal, alkaline earth metal or ammonium compound is used as additive.
摘要翻译： 式（I）的取代的环己酮其中R1至R5如说明书中所定义，可以通过式（II）的酚的催化氢化获得，其中R 1至R 5如说明书中所定义。 反应在20-250℃，1-200巴和乙醚作为溶剂进行。 如果需要，碱性碱金属，碱土金属或铵化合物被用作添加剂。
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公开(公告)号：US5756824A
公开(公告)日：1998-05-26
申请号：US730627
申请日：1996-10-21
IPC分类号： C07C281/02 , C07C261/00
CPC分类号： C07C281/02
摘要： Alkyl carbazates of the formula R.sup.1 --O--CO--NH--NH.sub.2 (I) are prepared in an advantageous manner by reacting an alkyl carbazate of the formula R.sup.2 --O--CO--NH--NH.sub.2 (II) with alcohols of the formula R.sup.1 --OH (III) in the presence of a catalyst, where the symbols used in the formulae are as defined in the description.
摘要翻译： 通过使式R 2 -O-CO-NH-NH 2（II）的肼基甲酸烷基酯与式R1-0的醇反应制备式R 1 -O-CO-NH-NH 2（I）的烷基肼基甲酸酯， OH（III）在催化剂存在下进行，其中式中使用的符号如说明书中所定义。
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公开(公告)号：US5360922A
公开(公告)日：1994-11-01
申请号：US23302
申请日：1993-02-26
IPC分类号： B01J29/064 , C07C68/00 , C07C69/96
CPC分类号： B01J29/064 , C07C68/00 , Y02P20/582
摘要： Dialkyl carbonates can be prepared by the reaction of carbon monoxide with alkyl nitrites in a continuous gas phase reaction, using a platinum group metal catalyst on an alumosilicate zeolite having acidic centers, preferably in the H.sup.+ form, as a support, which catalyst may optionally comprise additional material of a compound of antimony, bismuth, aluminum, copper, vanadium, niobium, tantalum, tin, iron, cobalt, nickel or a mixture of a plurality of these, and hydrogen halide being added in the course of the reaction intermittently or continuously. In this reaction, the dialkyl carbonates are formed with almost quantitative selectivity; the corresponding dialkyl oxalates cannot be detected in most cases.
摘要翻译： 碳酸二烷基酯可以通过在连续气相反应中使用一氧化碳与烷基亚硝酸盐的反应来制备，使用铂族金属催化剂在具有酸性中心的铝硅酸盐沸石，优选以H +形式作为载体，该催化剂可任选地包含 锑，铋，铝，铜，钒，铌，钽，锡，铁，钴，镍或它们中的多种的混合物的化合物的附加材料和在反应过程中间歇或连续地加入的卤化氢 。 在该反应中，以几乎定量的选择性形成碳酸二烷基酯; 在大多数情况下不能检测到相应的草酸二烷基酯。
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公开(公告)号：US5302742A
公开(公告)日：1994-04-12
申请号：US58549
申请日：1993-05-05
IPC分类号： A01N37/24 , B01J23/42 , C07B61/00 , C07C231/02 , C07C231/10 , C07C231/14 , C07C233/25 , C07C233/60 , C07C269/00
CPC分类号： C07C231/14 , C07C2101/14
摘要： N-acylated p-amino-phenols can be prepared by catalytical hydrogenation of the underlying aromatic nitro compounds in a reaction medium of aqueous sulfuric acid in the sense of a Bamberger type reaction at elevated temperature, optionally in the presence of a water-miscible organic solvent, and subsequent reaction of this reaction mixture with an acid chloride, optionally in the presence of an acid binder and optionally in the presence of a diluent.
摘要翻译： N-酰化的对氨基苯酚可以通过在升高的温度下在Bamberger型反应的含义的硫酸水溶液的反应介质中任选地在水混溶性有机物的存在下催化氢化下面的芳族硝基化合物来制备 溶剂，随后将反应混合物与酰氯反应，任选在酸性粘合剂存在下，任选在稀释剂存在下进行。
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公开(公告)号：US5288894A
公开(公告)日：1994-02-22
申请号：US958853
申请日：1992-10-08
CPC分类号： C07C68/00 , Y02P20/582
摘要： Dialkyl carbonates can be prepared by reaction of carbon monoxide with alkyl nitrites in a continuous gas phase reaction, in which a platinum metal catalyst of oxidic or hydroxidic compounds of elements from group Vb of the Periodic Table (Mendeleev) as supports and, if desired, addition of an antimony, bismuth, aluminium, copper, vanadium, niobium, tantalum, tin, iron, cobalt, nickel compound or a mixture of a plurality thereof on this catalyst are used, and the hydrogen halide which is discharged from the reactor together with the reaction mixture is batchwise or continuously replaced in the course of the reaction. This results in the formation of dialkyl carbonates in almost quantitative selectivity; the corresponding dialkyl oxalates can, in most cases, not be detected.
摘要翻译： 碳酸二烷基酯可以通过一氧化碳与亚硝酸烷基酯在连续气相反应中的反应来制备，其中将元素周期表（Mendeleev）中元素的氧化或氢化化合物的铂金属催化剂作为载体，如果需要， 使用在该催化剂上添加锑，铋，铝，铜，钒，铌，钽，锡，铁，钴，镍化合物或其多种混合物，将从反应器排出的卤化氢与 反应混合物在反应过程中间歇或连续替代。 这导致几乎定量选择性形成碳酸二烷基酯; 在大多数情况下，相应的草酸二烷基酯可以不被检测。
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公开(公告)号：US5235087A
公开(公告)日：1993-08-10
申请号：US717948
申请日：1991-06-20
IPC分类号： B01J23/52 , B01J23/62 , B01J23/64 , B01J23/652 , B01J23/89 , B01J27/045 , B01J27/057 , C07B61/00 , C07C68/00 , C07C69/96
CPC分类号： C07C68/00
摘要： Dialkyl carbonates can be prepared by reacting carbon monoxide with alkyl nitrites over a modified platinum metal supported catalyst at an elevated temperature in a continuous gas phase reaction, the reaction being carried out with the exclusion of additional oxidizing substances and, if appropriate, the presence of a lower alcohol.
摘要翻译： 碳酸二烷基酯可以通过在连续气相反应中在升高的温度下使一氧化碳与亚硝酸烷基酯在改性的铂金属负载的催化剂上反应来制备，反应是在排除另外的氧化物质的情况下进行的，并且如果合适的话， 低级酒精。
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