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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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公开(公告)号：US5649322A
公开(公告)日：1997-07-15
申请号：US571625
申请日：1995-12-11
IPC分类号： C07C201/04 , C07C203/00 , C07C203/02
CPC分类号： C07C201/04
摘要： C.sub.1 -C.sub.4 -Alkyl nitrites can be prepared by reaction of C.sub.1 -C.sub.4 -alkanols with nitrogen oxides with the participation of oxygen in a reactor designed as a scrubber column, nitrogen oxides having a proportion of more than 50% of NO of the total amount of gram atoms of N of the nitrogen oxides, oxygen and optionally inert gas being fed into the lower part of the reactor. 5 to 60% of the total amount of C.sub.1 -C.sub.4 -alkanol used is likewise fed into the lower part of the reactor in vaporous or atomized form, while the remaining C.sub.1 -C.sub.4 -alkanol is delivered to the column head.
摘要翻译： C1-C4烷基亚硝酸盐可以通过在设计为洗涤塔的反应器中将C1-C4-链烷醇与氮氧化物反应而制备，氧化反应设计为总量超过NO的50％ 的氮原子的氮原子的克原子，氧和任选的惰性气体被供给到反应器的下部。 使用的C 1 -C 4烷醇的总量的5-60％同样以蒸气或雾化的形式进料到反应器的下部，而剩余的C1-C4-链烷醇被输送到塔头。
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公开(公告)号：US5648570A
公开(公告)日：1997-07-15
申请号：US667533
申请日：1996-06-21
IPC分类号： C07B39/00 , C07C17/16 , C07C25/02 , C07C25/08 , C07C25/10 , C07C25/12 , C07C25/125 , C07C25/18 , C07C22/00
CPC分类号： C07C17/16
摘要： Substituted chloroaromatics are obtained in a simple manner in virtually isomer-free form when substituted phenols of the formula (II) ##STR1## where R.sup.1 to R.sup.5 are each, independently of one another, hydrogen, C.sub.1 -C.sub.10 -alkyl, unsubstituted or substituted C.sub.6 -C.sub.10 -aryl or halogen, with at least one of these radicals being different from hydrogen,are reacted with dichlorotriphenylphosphorus.
摘要翻译： 当式（II）的取代的苯酚（II）的取代酚，其中R 1至R 5各自彼此独立地为氢，C 1 -C 10 - 烷基，未被取代的取代的苯基，取代的氯代芳族化合物以几乎无异构体的形式以简单的方式获得。 或这些基团中的至少一个与氢不同的取代的C 6 -C 10 - 芳基或卤素与二氯三苯基磷反应。
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17.发明授权
公开(公告)号：US5648500A
公开(公告)日：1997-07-15
申请号：US608869
申请日：1996-02-29
IPC分类号： C07D209/86 , B01J23/44 , C07B61/00 , C07C251/84 , C07D209/88
CPC分类号： C07D209/88
摘要： Substituted 1,2,3,4-tetrahydrocarbazoles of the formula ##STR1## having the meaning for R.sup.1 to R.sup.8 indicated in the description, can be prepared by catalytically hydrogenating a substituted phenol of the formula ##STR2## reacting the hydrogenation solution with a phenylhydrazine of the formula ##STR3## to give the hydrazone and cyclizing the hydrazone under acidic conditions.
摘要翻译： 可以通过催化氢化式（II）的取代的苯与式（II）的取代的苯反应来制备具有如说明书中所示的R 1至R 8的含义的式（I）的取代的1,2,3,4-四氢咔唑， 该氢化溶液与式（III）的苯肼反应得到腙并在酸性条件下使腙环化。
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公开(公告)号：US5562887A
公开(公告)日：1996-10-08
申请号：US336365
申请日：1994-11-08
摘要： Alkyl nitrite-containing exhaust gases are purified in continuous form by treating them with equimolar to excess amidosulphuric acid in the form of an aqueous solution in the manner of a counter-current scrubbing at a temperature of 0.degree.-100.degree. C.
摘要翻译： 含有亚烷基亚烷基的废气通过在0℃-100℃的温度下以逆流洗涤的方式以等摩尔至过量的酰胺硫酸的水溶液的形式，以连续的形式进行纯化。
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公开(公告)号：US5552130A
公开(公告)日：1996-09-03
申请号：US429277
申请日：1995-04-25
IPC分类号： C01B21/084 , C07D213/61 , C07D213/89 , C07D231/16 , C09B41/00
CPC分类号： C07D231/16 , C01B21/0846 , C07D213/61
摘要： The reaction of nitrogen dioxide with hydrogen chloride to give nitrosyl chloride and nitric acid can be advantageously carried out in cocurrent in a reactor in such a way that the reactants are introduced at the bottom and the nitrosyl chloride is taken off at the top and the nitric acid is taken off at the bottom of the reactor.
摘要翻译： 二氧化氮与氯化氢反应得到亚硝酰氯和硝酸可以有利地在反应器中并流反应，使得反应物在底部引入，亚硝酰氯在顶部取出，硝酸 酸在反应器的底部取出。
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公开(公告)号：US5545754A
公开(公告)日：1996-08-13
申请号：US798681
申请日：1991-11-26
IPC分类号： C07C213/00 , C07C215/76 , C07C215/86 , C07C217/80 , C07C217/94 , C07C227/04 , C07C229/70 , C07C209/22
CPC分类号： C07C213/00 , C07C227/04
摘要： p-Amino-phenols are advantageously prepared by catalytic hydrogenation of the aromatic nitro compounds on which they are based in a reaction medium of aqueous sulphuric acid in the sense of a Bamberger rearrangement at elevated temperature by a procedure in which the reaction medium additionally contains a water-miscible organic solvent.
摘要翻译： 对氨基苯酚有利地通过其中基于它们的芳族硝基化合物在升高的温度下在Bamberger重排的意义上的硫酸水溶液的反应介质中的催化氢化来制备，其中反应介质另外含有 与水混溶的有机溶剂。
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