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1. 发明授权

US6130361A Reducing meta content of isomeric mixtures of halo substituted toluenes 失效
标题翻译：降低卤代取代甲苯的异构体混合物的元素含量
公开(公告)号：US6130361A
公开(公告)日：2000-10-10
申请号：US193755
申请日：1998-11-17
申请人： Viesturs Lesins , David Y. Tang , Arthur H. Morth , Mark E. Lindrose , William L. Rueter , Frank Bermel
发明人： Viesturs Lesins , David Y. Tang , Arthur H. Morth , Mark E. Lindrose , William L. Rueter , Frank Bermel
IPC分类号： C07C17/12 , C07C17/395 , C07C25/02 , C07C17/38 , C07C20/00
CPC分类号： C07C25/02 , C07C17/12 , C07C17/395
摘要： Disclosed is a method of separating the meta isomer of a halotoluene having the general formula ##STR1## from a mixture with at least one other isomer, where X is Cl or Br. About 0.0001 to about 5 wt % of a Friedel-Crafts catalyst is added to the mixture and the mixture is exposed to a brominating agent which preferentially brominates the meta isomer. The mixture is then heated at a temperature above the boiling point of the other isomers but below the boiling point of the brominated meta isomer.
摘要翻译：公开了将具有通式的卤代甲苯的间位异构体与至少一种其它异构体的混合物分离的方法，其中X是Cl或Br。将约0.0001至约5重量％的Friedel-Crafts催化剂加入到混合物中，并将混合物暴露于优先溴化偏甲基异构体的溴化剂。然后将混合物在高于其它异构体的沸点但低于溴代间异构体的沸点的温度下加热。

2. 发明授权

US06284934B1 Reducing meta content of isomeric mixtures of halo substituted alkylbenzenes 失效
标题翻译：降低卤代烷基苯的异构体混合物的元素含量
公开(公告)号：US06284934B1
公开(公告)日：2001-09-04
申请号：US09480382
申请日：2000-01-10
申请人： Michael J. Fifolt , William S. Derwin , Viesturs Lesins , Arthur H. Morth , Frank P. Bermel , David Y. Tang , Mark E. Lindrose , William L. Rueter
发明人： Michael J. Fifolt , William S. Derwin , Viesturs Lesins , Arthur H. Morth , Frank P. Bermel , David Y. Tang , Mark E. Lindrose , William L. Rueter
IPC分类号： C07C1738
CPC分类号： C07C17/395 , C07C17/12 , C07C25/02 , C07C25/18
摘要： Disclosed is a method of separating the meta isomer of a haloalkylbenzene having the general formula from a mixture with at least one other isomer, where X is Cl or Br and R is alkyl from C2 to C12 or cycloalkyl from C3 to C8. About 0.0001 to about 5 wt % of a Friedel-Crafts catalyst is added to the mixture and the mixture is exposed to a brominating agent which preferentially brominates the meta isomer. The mixture is then heated at a temperature above the boiling point of the other isomers but below the boiling point of the brominated meta isomer.
摘要翻译：公开了将具有通式的卤代烷基苯的间位异构体与至少一种其它异构体的混合物分离的方法，其中X为Cl或Br，R为C2至C12的烷基或C3至C8的环烷基。将约0.0001至约5重量％的Friedel-Crafts催化剂加入到混合物中，并将混合物暴露于优先溴化偏甲基异构体的溴化剂。然后将混合物在高于其它异构体的沸点但低于溴代间异构体的沸点的温度下加热。

3. 发明授权

US6156945A Method of making high purity 2,4- and 3,4-dichlorotoluene 失效
标题翻译：制备高纯度2,4-和3,4-二氯甲苯的方法
公开(公告)号：US6156945A
公开(公告)日：2000-12-05
申请号：US428688
申请日：1999-10-28
申请人： Viesturs Lesins , Arthur H. Morth , Frank P. Bermel , David Y. Tang , Mark E. Lindrose , William L. Rueter , Dean R. Lagerwall , Pravin M. Khandare , Hang-Chang Bobby Chen , Mark F. Lechner
发明人： Viesturs Lesins , Arthur H. Morth , Frank P. Bermel , David Y. Tang , Mark E. Lindrose , William L. Rueter , Dean R. Lagerwall , Pravin M. Khandare , Hang-Chang Bobby Chen , Mark F. Lechner
IPC分类号： C07C17/12 , C07C17/395 , C07C25/02 , C07C22/00
CPC分类号： C07C25/02 , C07C17/12 , C07C17/395
摘要： Disclosed is a method of making high purity 2,4- and 3,4-dichlorotoluene from parachlorotoluene that contains some metachlorotoluene. About 0.0001 to about 5 wt % of a Friedel-Crafts catalyst and about 0.5 to about 10 equivalents of a brominating agent are added to the parachlorotoluene. The metachlorotoluene is brominated, but most of the parachlorotoluene is not brominated. Without separating the brominated products from the unbrominated products, about 0.5 to about 1.5 equivalents of a chlorinating agent are added, whereby only the unbrominated products (i.e., the parachlorotoluene) are chlorinated. The resulting 2,4-dichlorotoluene and 3,4-dichlorotoluene can be separated by distillation.
摘要翻译：公开了一种从含有一些甲氯甲苯的对氯甲苯制备高纯度2,4-和3,4-二氯甲苯的方法。将约0.0001至约5wt％的Friedel-Crafts催化剂和约0.5至约10当量的溴化剂加入对氯甲苯中。甲氯氟苯被溴化，但大部分对氯甲苯不溴化。在不将溴化产物与未溴化产物分离的情况下，加入约0.5至约1.5当量的氯化剂，由此只有未溴化产物（即对氯甲苯）被氯化。所得的2,4-二氯甲苯和3,4-二氯甲苯可通过蒸馏分离。

4. 发明授权

US4968830A Aromatization process 失效
标题翻译：芳香化过程
公开(公告)号：US4968830A
公开(公告)日：1990-11-06
申请号：US405607
申请日：1989-09-11
申请人： David Y. Tang
发明人： David Y. Tang
IPC分类号： C07C263/02 , C07B35/04 , C07C17/00 , C07C17/25 , C07C17/357 , C07C25/13 , C07C51/36 , C07C51/363 , C07C51/377 , C07C63/70 , C07C253/30 , C07C255/50 , C07C265/12
CPC分类号： C07C253/30 , C07C17/357 , C07C51/377 , C07C51/567
摘要： Halogen substituted aromatic compounds of the formula ##STR1## wherein Y is selected from the group CO.sub.2 H, COF, COCl, COBr, CF.sub.3, CN, NCO, or F, and X and X' are independently hydrogen or a halogen selected from the group F-, Cl- and Br-, at least one of X and X' being halogen; may be prepared by the liquid phase reaction of a brominating agent, at temperatures below about 190.degree. Celsius, with a correspondingly substituted cyclohexene or cyclohexadiene.

5. 发明授权

US4801763A Selective chlorination of chlorotrifluoroethylene telomers 失效
标题翻译：选择性氯化氯三氟乙烯调聚物
公开(公告)号：US4801763A
公开(公告)日：1989-01-31
申请号：US78327
申请日：1987-07-27
申请人： James J. Maul , Bobby F. Dannels , David Y. Tang
发明人： James J. Maul , Bobby F. Dannels , David Y. Tang
IPC分类号： C07C17/395 , C07C17/20 , C07C17/38 , C07C19/08 , C07G13/00
CPC分类号： C07C17/395
摘要： A process is disclosed for purifying and stabilizing a mixture of regular chlorotrifluoroethyelne telomers of formula RCXCl(CF.sub.2 CFCl).sub.n Br from bromine-containing irregular telomer impurities of similar molecular weight. The telomer mixture is produced by reacting chlorotrifluoroethylene with a telogen of formula RCXClBr, where R is CF.sub.2 Br, or Cl, and X is Cl or F. The telomer mixture is then chlorinated using either elevated temperature alone (100.degree. C.-350.degree. C.), or a combination of elevated temperatures (100.degree. C.-200.degree. C.) and light energy primarily of the wavelength region greater than about 3000.degree.A. Under these conditions, CFClBr telomer end group of the regular or normal telomer is chlorinated to form --CFCl.sub.2 end groups, while the bromine-containing irregular telomer impurities (whose bromine-containing end groups are substantially only --CF.sub.2 Br) are substantially not chlorinated. The desired regular telomers can then be readily separated from the higher boiling impurities by distillation. Any --CF.sub.2 Br groups present in the isolated regular telomer are then further stabilized by prolonged chlorination under the above conditions or at elevated temperatures (100.degree. C.-350.degree. C.) with irradiation by a UV lamp.
摘要翻译：公开了一种用于纯化和稳定式RCXCl（CF 2 CFCl）nBr的常规氯三氟乙烯调节剂的混合物的方法，该混合物含有相似分子量的含溴不规则调聚物杂质。调聚物混合物通过使氯三氟乙烯与式RCXClBr的脱水酶（其中R是CF 2 Br或Cl，X是Cl或F）反应来制备。然后使用单独的升高温度（100℃-350℃）将调聚物混合物进行氯化）或高温（100℃-2200℃）和主要波长区域的光能大于约3000°A的组合。在这些条件下，常规或正常调聚物的CFClBr调聚端基是氯化形成-CFCl 2端基，而含溴不规则调聚剂杂质（其含溴端基本上仅为-CF 2 Br）基本上不氯化。然后可以通过蒸馏将所需的常规调聚物容易地与较高沸点的杂质分离。然后通过在上述条件下或在升高的温度（100℃-350℃）下用UV灯照射，通过长时间氯化来进一步稳定分离的常规调聚物中存在的任何-CF 2 Br基团。

6. 发明授权

US4704483A 3,4-difluoro-5-nitrobenzotrifluoride and preparation of fluoro-nitro-benzotrifluorides 失效
标题翻译： 3,4-二氟-5-硝基三氟甲苯和氟 - 硝基 - 三氟甲苯的制备
公开(公告)号：US4704483A
公开(公告)日：1987-11-03
申请号：US806990
申请日：1985-12-09
申请人： David Y. Tang , Byron R. Cotter , Fredrick J. Goetz
发明人： David Y. Tang , Byron R. Cotter , Fredrick J. Goetz
IPC分类号： C07B39/00 , C07C17/093 , C07C25/13 , C07C37/02 , C07C39/26 , C07C51/097 , C07C63/70 , C07C201/08 , C07C201/12 , C07C205/12 , C07C79/12
CPC分类号： C07B39/00 , C07C17/093 , C07C201/12 , C07C205/12 , C07C25/13 , C07C37/02 , C07C41/22 , C07C51/097
摘要： A process for the preparation of 3-chloro-4-fluoro-5-nitrobenzotrifluoride and 3,4-difluoro-5-nitrobenzotrifluoride by reaction of 3,4-di-chloro-5-nitrobenzotrifluoride and 4-chloro-3,5-dinitrobenzotrifluoride, respectively, with an alkali metal fluoride.
摘要翻译：通过3,4-二氯-5-硝基三氟甲苯与4-氯-3,5-二氟-5-硝基三氟甲苯的反应制备3-氯-4-氟-5-硝基三氟甲苯和3,4-二氟-5-硝基三氟甲苯的方法，二硝基三氟甲苯，分别与碱金属氟化物反应。

7. 发明授权

US4488953A Purification of recycled paraffins in photochlorination process 失效
标题翻译：循环石蜡在光氯化过程中的纯化
公开(公告)号：US4488953A
公开(公告)日：1984-12-18
申请号：US504005
申请日：1983-06-13
申请人： David Y. Tang , James G. Colson
发明人： David Y. Tang , James G. Colson
IPC分类号： C07C7/148 , C07C17/10 , C07C17/00
CPC分类号： C07C7/148 , C07C17/10
摘要： An improved process for the photochlorination of normal paraffins to prepare mono-chlorinated alkanes, in which the normal paraffin feed stream is only partially chlorinated and the unreacted normal paraffins separated and recycled, the recycled unreacted paraffin being treated with a basic material capable of removing polar impurities therefrom which may hinder the photochlorination reaction.
摘要翻译：用于正链烷烃的光氯化以制备单氯代烷烃的改进方法，其中正链烷烃进料流仅部分氯化，未反应的正链烷烃分离和再循环，循环的未反应的石蜡用能够除去极性的碱性物质处理可能阻碍光氯化反应的杂质。

8. 发明授权

US4229378A Process for the production of 1-phenyl-3-(3-trifluoromethylphenyl)-2-propanone 失效
标题翻译： 1-苯基-3-（3-三氟甲基苯基）-2-丙酮的制备方法
公开(公告)号：US4229378A
公开(公告)日：1980-10-21
申请号：US38766
申请日：1979-05-14
申请人： David Y. Tang , Arthur M. Foster
发明人： David Y. Tang , Arthur M. Foster
IPC分类号： C07C29/58 , C07C29/60 , C07C45/30 , C07C45/58 , C07C45/74 , C07C49/813 , C07C49/83 , C07D303/08 , C07D303/32 , C07C45/16
CPC分类号： C07C29/58 , C07C29/60 , C07C45/305 , C07C45/58 , C07C45/74 , C07C49/813 , C07C49/83 , C07D303/08 , C07D303/32 , C07C2101/16
摘要： The present invention provides a novel process for the production of 1-phenyl-3-(3-trifluoromethylphenyl)-2-propanone. The process comprises the steps of:(a) condensing 3-trifluoromethylbenzaldehyde with acetophenone under basic conditions to form a substituted chalcone,(b) epoxidation of the substituted chalcone to produce the corresponding epoxide,(c) converting the epoxide to a chlorohydrin,(d) catalytic hydrogenolysis of the chlorohydrin to produce a diol and subsequently converting the diol into the corresponding alcohol, and(e) oxidizing the alcohol to produce 1-phenyl-3-(3-trifluoromethylphenyl)-2-propanone.
摘要翻译：本发明提供了一种制备1-苯基-3-（3-三氟甲基苯基）-2-丙酮的新方法。该方法包括以下步骤：（a）在碱性条件下将3-三氟甲基苯甲醛与苯乙酮缩合形成取代的查耳酮，（b）取代的查耳酮的环氧化反应产生相应的环氧化物，（c）将环氧化物转化为氯代醇（ d）氯代醇的催化氢解以产生二醇，随后将二醇转化为相应的醇，和（e）氧化醇以产生1-苯基-3-（3-三氟甲基苯基）-2-丙酮。

9. 发明授权

US5049682A Process for the preparation of halophthalic anhydrides 失效
标题翻译：制备卤代邻苯二甲酸酐的方法
公开(公告)号：US5049682A
公开(公告)日：1991-09-17
申请号：US405606
申请日：1989-09-11
申请人： David Y. Tang , Mary K. Cocoman , Harry E. Buckholtz
发明人： David Y. Tang , Mary K. Cocoman , Harry E. Buckholtz
IPC分类号： C07D307/89 , C07C51/377 , C07C51/567 , C07C253/30
CPC分类号： C07C253/30 , C07C51/377 , C07C51/567
摘要： Halophthalic anhydrides are prepared by the liquid phase reaction of a brominating agent with halogen substituted hexa- or tetra-hydrophthalic anhydrides.

10. 发明授权

US4792618A Fluorinated carbocylic compounds 失效
标题翻译：氟化碳环化合物
公开(公告)号：US4792618A
公开(公告)日：1988-12-20
申请号：US680695
申请日：1984-12-12
申请人： Joseph F. Bieron , David Y. Tang
发明人： Joseph F. Bieron , David Y. Tang
IPC分类号： C07C51/567 , C07C69/75 , C07C49/303 , C07C53/44 , C07C121/46
CPC分类号： C07C51/567
摘要： Fluoro-substituted carbocyclic compounds are prepared by(A) reacting hydrogen fluoride with a chloro-cyclohexenyl compound of the formula ##STR1## where R.sub.1 and R.sub.2 are independently selected from the group consisting of --H, --CH.sub.2 OH, --COF, --COCl, --CF.sub.3, --CN, ##STR2## and --CH.sub.2 R, where R is --H or alkyl of 1-4 carbon atoms, to form a gem-dihalocyclohexane compound of the formula ##STR3## where X is chlorine and R.sub.1 and R.sub.2 are as defined above, (B) dehydrohalogenating the gem-dihalocyclohexane compound in the vapor phase to form a fluoro-cyclohexenyl compound of the formula ##STR4## (C) contacting the fluoro-cyclohexenyl compound, in the vapor phase, with a dehydrogenation catalyst to form a fluoro-substituted aromatic compound of the formula ##STR5##
摘要翻译：氟取代的碳环化合物是通过（A）使氟化氢与式（IMAGE）的氯 - 环己烯基化合物反应来制备的，其中R 1和R 2独立地选自-H，-CH 2 OH，-COF，-COCl， -CF 3，-CN，和-CH 2 R，其中R是-H或1-4个碳原子的烷基，以形成式为“IMAGE”的偕 - 二卤代环己烷化合物，其中X为氯，R 1和R 2为（B）在蒸气相中脱氢卤化偕 - 二卤代环己烷化合物以形成下式的氟 - 环己烯基化合物：（C）使气相中的氟 - 环己烯基化合物与脱氢催化剂接触形成具有下式的氟取代的芳族化合物

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