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51. 发明授权

US5463135A Fluorinated benzils and a process for their preparation 失效
标题翻译：氟化苯乙烯及其制备方法
公开(公告)号：US5463135A
公开(公告)日：1995-10-31
申请号：US147826
申请日：1993-11-04
申请人： Andreas Kanschik-Conradsen , Theodor Papenfuhs
发明人： Andreas Kanschik-Conradsen , Theodor Papenfuhs
IPC分类号： C07B61/00 , C07B39/00 , C07C45/63 , C07C49/813 , C07C205/45 , C07C235/84 , C07C255/57 , C07C309/86 , C07C309/87 , C07C317/24 , C07C49/784
CPC分类号： C07C45/63 , C07B39/00 , C07C49/813
摘要： Fluorinated benzils and a process for their preparation A process for the preparation of fluorinated benzils of the formula (1) ##STR1## in which X.sub.1 -X.sub.6, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are hydrogen, fluorine, chlorine or bromine atoms, or alkyl(C.sub.1 -C.sub.10), phenyl or naphthyl groups which may be substituted, or are groups reducing the electron density, at least one of the substituents X.sub.1 -X.sub.6 being a fluorine atom, by reacting 1 mol of a benzil of the formula (1), in which X.sub.1 -X.sub.6 and R.sub.1 and R.sub.2 have the abovementioned meanings, with the proviso that at least one of the substituents X.sub.1 -X.sub.6 is a chlorine atom, with about 0.8 to about 2.5 mol of potassium fluoride, rubidium fluoride, cesium fluoride or tetraalkyl (C.sub.1 -C.sub.18)-ammonium fluoride per chlorine atom to be exchanged, at temperatures of from about 100.degree. C. to about 280.degree. C., possibly in the presence of a phase transfer catalyst and a dipolar aprotic or nonpolar solvent, and the new benzils prepared by this process.
摘要翻译：氟化苯偶虫及其制备方法制备式（1）的化合物的方法其中X1-X6，R1，R2，R3和R4是氢，氟，氯或溴原子，或可以被取代的烷基（C1-C10），苯基或萘基，或者是电子密度降低的基团，至少一个取代基X1-X6是氟原子，通过使1摩尔式（1）中，其中X1-X6和R1和R2具有上述含义，条件是至少一个取代基X1-X6为氯原子，约0.8至约2.5摩尔氟化钾，氟化铷，氟化铯或氟化四烷基（C 1 -C 18） - 氟化铵，每个氯原子要交换，温度范围为约100℃至约280℃，可能存在相转移催化剂和偶极非质子或非极性溶剂和通过该方法制备的新的苯偶虫。

52. 发明授权

US5451703A Process for the preparation of biaryls 失效
标题翻译：联芳基的制备方法
公开(公告)号：US5451703A
公开(公告)日：1995-09-19
申请号：US255550
申请日：1994-05-31
申请人： Thomas Schach , Theodor Papenfuhs , Joachim Hackenbruch
发明人： Thomas Schach , Theodor Papenfuhs , Joachim Hackenbruch
IPC分类号： C07B37/04 , C07C17/26 , C07C1/32
CPC分类号： C07B37/04 , C07C17/269
摘要： Process for the preparation of biaryls of the formula (1)R.sup.1.sub.m --Ar--Ar--R.sup.1.sub.m (1)wherein Ar is a phenylene or naphthylene radical, R.sup.1 is a hydrogen, fluorine or chlorine atom or an unbranched or branched alkyl(C.sub.1 -C.sub.6)--, alkyl(C.sub.1 -C.sub.6)--O--, alkyl(C.sub.1 -C.sub.6)--CO-- or alkyl(C.sub.1 -C.sub.6)--SO.sub.2 -- radical and m is the number of still unsubstituted ##STR1## positions on the Ar radical, in which a compound of the formula (2)R.sup.1.sub.m --Ar--X (2)wherein Ar, R.sup.1 and m have the meanings cited above and X is a chlorine or bromine atom, is dehalogenated and dimerized in the presence of a palladium catalyst on a support material, of a reducing agent, a hydrogen halide acceptor, a polyether or polyether mixture and of water at temperatures of about 50.degree. to about 120.degree. C.
摘要翻译：制备式（1）的联芳基的方法R1m-Ar-Ar-R1m（1）其中Ar为亚苯基或亚萘基，R1为氢，氟或氯原子或未支化或支链烷基（C1-C6 ） - ，烷基（C 1 -C 6）-O-，烷基（C 1 -C 6）-CO-或烷基（C 1 -C 6）-SO 2 - 基，m是Ar基团上仍未取代的取代基数，其中式（2）R1m-Ar-X（2）的化合物其中Ar，R1和m具有上述含义，X为氯或溴原子，在钯催化剂存在下脱卤并二聚还原剂，卤化氢受体，聚醚或聚醚混合物和水的载体材料，在约50℃至约120℃的温度下进行。

53. 发明授权

US5384413A Process for the preparation of tetrafluorophthalic acid and/or tetrafluorophthalic anhydride 失效
标题翻译：制备四氟邻苯二甲酸和/或四氟邻苯二甲酸酐的方法
公开(公告)号：US5384413A
公开(公告)日：1995-01-24
申请号：US90794
申请日：1993-07-12
申请人： Ralf Pfirmann , Theodor Papenfuhs
发明人： Ralf Pfirmann , Theodor Papenfuhs
IPC分类号： C07C51/06 , C07C51/00 , C07C51/083 , C07C51/38 , C07C51/54 , C07C63/70 , C07C63/72 , C07D209/48 , C07D307/89 , C07D307/83
CPC分类号： C07C51/00 , C07C51/44 , C07D209/48
摘要： The present invention relates to a process for the preparation of tetrafluorophthalic acid and/or tetrafluorophthalic anhydride by reacting a compound of the formula ##STR1## in which X is a radical ##STR2## which is optionally mono- or polysubstituted on the aromatic nucleus by fluorine and/or chlorine and/or alkyl groups having 1 to 4 carbon atoms, or is a radical ##STR3## in which R.sub.1, R.sub.2 and R.sub.3 are as defined, with water, and subsequently removing the water still present by azeotropic distillation or extracting the tetrafluorophthalic acid and/or its anhydride with a water-insoluble solvent or solvent mixture.
摘要翻译：本发明涉及一种制备四氟邻苯二甲酸和/或四氟邻苯二甲酸酐的方法，该方法通过使式（IMAGE）的化合物与其中X是一个基团（IMAGE）反应，该基团在芳香核上任选被一个或多个取代在氟原子上和/或具有1至4个碳原子的氯和/或烷基，或者是其中R 1，R 2和R 3如上定义的基团，与水反应，随后通过共沸蒸馏除去仍然存在的水或提取四氟邻苯二甲酸和/或其酸酐与水不溶性溶剂或溶剂混合物。

54. 发明授权

US5294742A Process for preparing 3,5-difluoroaniline 失效
标题翻译：制备3,5-二氟苯胺的方法
公开(公告)号：US5294742A
公开(公告)日：1994-03-15
申请号：US032986
申请日：1993-02-18
申请人： Thomas Schach , Theodor Papenfuhs
发明人： Thomas Schach , Theodor Papenfuhs
IPC分类号： B01J23/44 , C07B61/00 , C07C17/00 , C07C17/093 , C07C25/13 , C07C205/12 , C07C209/36 , C07C211/52
CPC分类号： C07C209/365 , C07C17/093 , C07C201/12
摘要： Process for preparing 3,5-difluoroaniline, wherein(1) 2,4,5-trichloronitrobenzene is reacted with an alkali metal fluoride in the presence or absence of a polar aprotic solvent at temperatures of about 100.degree. C. to about 250.degree. C., and, after filtering off precipitated salts and fractional distillation of the crude solution,(2) the resulting 5-chloro-2,4-difluoronitrobenzene is chlorinated with denitration to give 1,3-dichloro-4,6-difluorobenzene in the absence of a Lewis acid or of another chlorination catalyst, using anhydrous chlorine gas at temperatures of about 80.degree. to about 250.degree. C., and(3) this compound is nitrated to give 2,6-dichloro-3,5-difluoronitrobenzene in oleum with mixed acid (sulfuric acid/nitric acid) at temperatures of about 15.degree. to about 80.degree. C., and(4) this compound is reduced with hydrogen in the presence of palladium as catalyst and in the presence of an inorganic or organic base at temperatures of about 40.degree. to about 250.degree. C.
摘要翻译：制备3,5-二氟苯胺的方法，其中（1）在约100℃至约250℃的温度下，在极性非质子溶剂存在或不存在下，将2,4,5-三氯硝基苯与碱金属氟化物反应在过滤沉淀的盐并分解粗溶液后，（2）将所得的5-氯-2,4-二氟硝基苯用脱硝进行氯化，得到1,3-二氯-4,6-二氟苯在约80℃至约250℃的温度下使用无水氯气，并且（3）将该化合物硝化，得到2,6-二氯-3,5-二氟硝基苯在约15℃至约80℃的温度下使用混合酸（硫酸/硝酸）的发烟硫酸，和（4）该化合物在钯作为催化剂存在下并在无机或有机物存在下用氢还原碱在约40度至约2℃的温度下进行 50摄氏度

55. 发明授权

US5292967A Process for producing 2,3-difluoro-6-nitrophenol 失效
标题翻译： 2,3-二氟-6-硝基苯酚的制备方法
公开(公告)号：US5292967A
公开(公告)日：1994-03-08
申请号：US35719
申请日：1993-03-23
申请人： Theodor Papenfuhs , Joachim Hackenbruch , Ralf Pfirmann
发明人： Theodor Papenfuhs , Joachim Hackenbruch , Ralf Pfirmann
IPC分类号： B01J23/02 , C07B61/00 , C07C201/12 , C07C205/26 , C07C205/20
CPC分类号： C07C201/12
摘要： According to a process for producing isomer-free 2,3-difluoro-6-nitrophenol, 2,3,4-trifluoronitrobenzene is reacted with an aqueous solution of alkali metal or alkaline earth metal hydroxide in the absence of organic solvent, at temperatures between about 20.degree. C. and 100.degree. C., the pH value of the reaction mixture is set at about 1 to 6 by acid addition, the resulting product is stream distilled and the 2,3-difluoro-6-nitrophenol is isolated after cooling. No organic solvents are used during any of the steps of the process.
摘要翻译： PCT No.PCT / EP91 / 01829 Sec。 371日期1993年3月23日 102（e）日期1993年3月23日PCT 1991年9月25日PCT公布。出版物WO92 / 05141 日期：1992年4月2日。根据生产异构体2,3-二氟-6-硝基苯酚的方法，将2,3,4-三氟硝基苯与碱金属或碱土金属氢氧化物的水溶液在不存在的情况下反应的有机溶剂中，在约20℃至100℃的温度下，通过酸加成将反应混合物的pH值设定在约1至6，将所得产物进行流蒸馏，并将2,3-二氟 - 冷却后分离出6-硝基苯酚。在该方法的任何步骤中都不使用有机溶剂。

56. 发明授权

US4968845A Process for the preparation of halogen-containing aromatic compounds 失效
标题翻译：制备含卤素芳香族化合物的方法
公开(公告)号：US4968845A
公开(公告)日：1990-11-06
申请号：US320062
申请日：1989-03-07
申请人： Joachim Hackenbruch , Theodor Papenfuhs , Klaus Warning , Gunter Siegemund
发明人： Joachim Hackenbruch , Theodor Papenfuhs , Klaus Warning , Gunter Siegemund
IPC分类号： C07B61/00 , C07C45/00 , C07C45/46 , C07C49/813 , C07C49/84 , C07C67/00 , C07C315/04 , C07C317/24 , C07C319/20 , C07C323/22 , C07F7/08
CPC分类号： C07C45/46 , C07C49/813 , C07C49/84
摘要： A process for the preparation of halogen-containing aromatic compounds of the formula ##STR1## wherein Hal represents fluorine, chlorine or bromine and Z represents an aromatic group which comprises reacting a halobenzene of the formula C.sub.6 H.sub.5 Hal (II) under anhydrous conditions with a halide of a bisacid having the formula Hal-CO-Z-CO-Hal (III) in a molar ratio of at least 2:1 in the presence of a haloalkane sulfonic acid of the formula Y(C.sub.n X.sub.2n)SO.sub.3 H (IV), in formulae II and III Hal and Z having the afore-mentioned meaning and Y representing fluorine or hydrogen, X at least one of fluorine and chlorine, but at least one X being fluorine, and n being an integer of from 1 to 10.The said bis-(4-halobenzoyl) compounds being useful monomers for chemically resistant plastics which are still resistant even at high temperatures.
摘要翻译：制备式（I）的卤素芳族化合物的方法，其中Hal表示氟，氯或溴，Z表示芳族基团，其包括使式C 6 H 5 Hal（II）的卤代苯在无水条件下与在式Y（CnX 2 n）SO 3 H（IV）的卤代烷基磺酸存在下，摩尔比为至少2:1的具有式Hal-CO-Z-CO-Hal（III）的双酸的卤化物，在式II和III中，具有上述含义的Hal和Z，Y表示氟或氢，X表示氟和氯中的至少一种，但至少一个X为氟，n为1至10的整数。所述双 - （4-卤代苯甲酰基）化合物是用于化学抗性塑料的有用单体，即使在高温下仍然具有抗性。

57. 发明授权

US4948919A Arylaminonitrophenyl hydroxyethyl sulfones 失效
标题翻译：芳基硝基苯基羟基乙基砜
公开(公告)号：US4948919A
公开(公告)日：1990-08-14
申请号：US304596
申请日：1989-01-24
申请人： Werner Brodt , Theodor Papenfuhs
发明人： Werner Brodt , Theodor Papenfuhs
IPC分类号： C09B62/51 , C07C67/00 , C07C313/00 , C07C315/04 , C07C317/36 , C09B62/44
CPC分类号： C09B62/4413
摘要： A process for the preparation of arylaminonitrophenyl hydroxyethyl sulfones of the formula (1) ##STR1## in which Z denotes the radical ##STR2## in which R.sub.1 denotes a hydrogen atom or an --NH.sub.2, --NH--R or --N(R).sub.2 group, R representing a C.sub.1 -C.sub.4 -alkyl group, R.sub.2 denotes a hydrogen atom, a C.sub.1 -C.sub.4 -alkyl group or a C.sub.1 -C.sub.4 -alkoxy group, R.sub.3 represents a hydrogen, chlorine or bromine atom or a sulfonic acid, sulfonamide, carboxylic acid, carboxamide, hydroxyl, carbomethoxy, carboethoxy or hydroxyethylsulfonyl group, R.sub.4 denotes a hydrogen, chlorine or bromine atom or a sulfonic acid, carboxylic acid, hydroxy or C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkyl group, it being possible for 1-3 different R.sub.1 -R.sub.3 substituents, not more than two of which may, however, be identical, to be present in the radical Z.sub.a, and for 1-4 different R.sub.1 -R.sub.4 -substituents, not more than two of which may, however, be identical, to be present in the radical Z.sub.b, and R has the meaning mentioned earlier in the text, which comprises reacting compounds of the formula (2) ##STR3## in which X denotes a chlorine or bromine atom, with an amino compound of the formula ##STR4## in which R, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 have the said meanings, at 20.degree. to 180.degree. C., at pH values from 4.0 to 10.0 in water or in suitable organic solvents and in the presence of an inorganic or organic acid-binding agent.
摘要翻译：制备式（1）的芳基氨基硝基苯基羟基乙基砜的方法其中Z表示基团，其中R 1表示氢原子或 - （Z a） NH 2，-NH-R或-N（R）2基，R代表C1-C4-烷基，R2表示氢原子，C1-C4-烷基或C1-C4-烷氧基，R3表示氢，氯或溴原子或磺酸，磺酰胺，羧酸，甲酰胺，羟基，甲酯基，乙氧基乙氧基或羟乙基磺酰基，R4表示氢，氯或溴原子或磺酸，羧酸，羟基或C1-C4- 烷氧基或C 1 -C 4 - 烷基，可能有1-3个不同的R 1 -R 3取代基，其中不超过2个可以相同地存在于基团Za中，对于1-4个不同的R 1 -R4-取代基，其中不多于两个可以相同地存在于基团Zb中，R具有文中较早提及的含义，它们包括（2）其中X表示氯或溴原子的式（2）化合物与式（3a）或（IMA）（3b）的氨基化合物反应，其中R 1，R 2， R2，R3和R4具有所述含义，在20至180℃，pH值为4.0至10.0，在水或合适的有机溶剂中，在无机或有机酸结合剂存在下。

58. 发明授权

US4851575A Process for the preparation of 2-nitro-4-sulfamyldiphenylamine dyestuffs 失效
标题翻译： 2-硝基-4-磺酰基二苯胺染料的制备方法
公开(公告)号：US4851575A
公开(公告)日：1989-07-25
申请号：US55080
申请日：1987-05-28
申请人： Werner Brodt , Theodor Papenfuhs
发明人： Werner Brodt , Theodor Papenfuhs
IPC分类号： C09B51/00
CPC分类号： C09B51/00
摘要： Process for the preparation of 2-nitro-4-sulfamyldiphenylamine dyestuffs of the formula (1) ##STR1## in which R.sub.1 and R.sub.2 each denote a hydrogen, chlorine or bromine atom or a C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy group or a phenoxy group which can be substituted on the benzene nucleus by chlorine or bromine atoms or C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or trifluoromethyl groups, or denote a naphthoxy group, and R.sub.2 can also be an -N-(C.sub.1 -C.sub.4 -alkyl).sub.2, -NH-(C.sub.1 -C.sub.4 -alkyl), -NH-(C.sub.1 -C.sub.4 -alkanoyl) or -NH-benzoyl group, and R.sub.3 and R.sub.4 each denote a hydrogen atom or a C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.2 -alkoxy-C.sub.1 -C.sub.4 -alkyl or C.sub.5 -C.sub.6 -cycloalkyl group, and R.sub.4 can also be a phenyl group which can be substituted by chlorine or bromine atoms or C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, -N-(C.sub.1 -C.sub.4 -alkyl).sub.2, -NH-(C.sub.1 -C.sub.4 -alkyl), -NH-(C.sub.1 -C.sub.4 -alkanoyl), -NH-benzoyl, phenoxy or naphthoxy groups, by sulfonating o-nitrochlorobenzene with chlorosulfonic acid at 100.degree.-110.degree. C. to give 4-chloro-3-nitrobenzenesulfonic acid of the formula (2) ##STR2## converting the latter by means of thionyl chloride at 70.degree.-80.degree. C. into 4-chloro-3-nitrobenzenesulfochloride, precipitating the latter on ice and subjecting the resulting 4-chloro-3-nitrobenzenesulfochloride to a condensation reaction first with an aliphatic or aromatic amine of the formula ##STR3## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 have the meanings mentioned, suspended or dissolved in an aqueous solution of a basic condensation agent, the presence of an ionic or nonionic surfactant, initially at 5.degree. to 50.degree. C. and at pH 7.5 to 12.5, and then with an aromatic amine of the formula (4) mentioned, suspended or dissolved in an aqueous solution of a basic condensation agent, at 80.degree. to 100.degree. C., within the pH range mentioned and in the presence of a surfactant of the type mentioned.
摘要翻译：式（1）的2-硝基-4-磺酰基二苯胺染料的制备方法其中R 1和R 2各自表示氢，氯或溴原子或C 1 -C 4 - 烷基或C 1 -C 4 - 烷氧基或苯氧基，其可以在苯环上被氯或溴原子或C 1 -C 4 - 烷基，C 1 -C 4 - 烷氧基或三氟甲基取代，或表示萘氧基，并且R 2也可以是-N - （C 1 -C 4 - 烷基）2，-NH-（C 1 -C 4 - 烷基），-NH-（C 1 -C 4 - 烷酰基）或-NH-苯甲酰基，R 3和R 4各自表示氢原子或C 1 -C 1-4 - 烷基，C 1 -C 2 - 烷氧基-C 1 -C 4 - 烷基或C 5 -C 6 - 环烷基，R 4也可以是可被氯或溴原子取代的苯基或C 1 -C 4 - 烷基， C 1 -C 4 - 烷氧基，-N-（C 1 -C 4 - 烷基）2，-NH-（C 1 -C 4 - 烷基），-NH-（C 1 -C 4烷酰基），-NH-苯甲酰基，苯氧基或萘氧基邻硝基氯苯与氯磺酸在100-110℃下反应，得到式（2）的4-氯-3-硝基苯磺酸（2）转化为后者通过亚硫酰氯在70°-80℃加入到4-氯-3-硝基苯磺酰氯中，将其沉淀在冰上，并将所得4-氯-3-硝基苯磺酰氯首先与脂族或芳族化合物进行缩合反应胺，其中R 1，R 2，R 3和R 4具有上述含义，悬浮或溶解在碱性缩合剂的水溶液中，离子型或非离子型表面活性剂的存在，最初为5〜50℃ 然后用上述式（4）的芳香胺悬浮或溶解在碱性缩合剂的水溶液中，在80℃至100℃，在所述的pH范围内并在所述类型的表面活性剂存在下进行。

59. 发明授权

US4613704A Process for the preparation of 5-hydroxyethylsulfonyl-2-aminophenol (ethers) 失效
标题翻译： 5-羟乙基磺酰基-2-氨基苯酚（醚）的制备方法
公开(公告)号：US4613704A
公开(公告)日：1986-09-23
申请号：US675979
申请日：1984-11-29
申请人： Theodor Papenfuhs
发明人： Theodor Papenfuhs
IPC分类号： C07C315/04 , C07C67/00 , C07C313/00 , C07C315/02 , C07C317/36 , C07C85/11
CPC分类号： C07C323/00 , C07C317/00
摘要： Process for the preparation of 5-hydroxyethylsulfonyl-2-aminophenol (ethers) of the formula (I) ##STR1## wherein R denotes a hydrogen atom or a C.sub.1 -C.sub.4 -alkyl group and R.sub.1 denotes a hydrogen atom or an alkyl or alkoxy group with in each case 1-4 carbon atoms, which comprises condensing 5-chloro(or bromo)-2-nitrophenols, or alkyl ethers thereof, of the formula (II) ##STR2## in which R and R.sub.1 have the abovementioned meanings and X denotes a chlorine or bromine atom, with thioglycol to give 2-nitrophenol(ether) 5-hydroxyethyl-sulfides of the formula (III) ##STR3## wherein R and R.sub.1 have the abovementioned meanings, oxidizing these to give 5-hydroxyethylsulfonyl-2-nitrophenol (ethers) ##STR4## and reducing the latter to give compounds of the above formula (I).
摘要翻译：用于制备式（I）的5-羟乙基磺酰基-2-氨基苯酚（醚）的方法其中R表示氢原子或C1-C4-烷基，R1表示氢原子或烷基或烷氧基，其中每种情况下为1-4个碳原子，其包括将式（II）的式（II）的5-氯（或溴）-2-硝基苯酚或其烷基醚缩合成其中R和R 1 具有上述含义，X表示氯或溴原子，与硫代二醇反应得到式（III）的2-硝基苯酚（醚）5-羟乙基硫化物，其中R和R 1具有上述含义，氧化得到5-羟乙基磺酰基-2-硝基苯酚（醚）（IV）并还原后者，得到上述式（I）的化合物。

60. 发明授权

US4612396A Process for the preparation of pure 2-ethylamino-4-nitro-1-alkoxybenzenes 失效
标题翻译：纯2-乙氨基-4-硝基-1-烷氧基苯的制备方法
公开(公告)号：US4612396A
公开(公告)日：1986-09-16
申请号：US745921
申请日：1985-06-18
申请人： Wolfgang Koller , Theodor Papenfuhs
发明人： Wolfgang Koller , Theodor Papenfuhs
IPC分类号： C07C213/02 , C07C67/00 , C07C213/00 , C07C217/84 , C07C87/60
CPC分类号： C07C213/08
摘要： A process for the preparation of pure 2-ethylamino-4-nitro-1-alkoxybenzenes of the formula (1) ##STR1## in which R denotes an alkyl(C.sub.1 -C.sub.4) or alkoxy(C.sub.1 -C.sub.4)-alkyl(C.sub.1 -C.sub.4) group, which comprises N-monoalkylation of 2-amino-4-nitro-1-alkoxybenzenes of the formula (2) ##STR2## in which R has the abovementioned meaning, using a slight excess of diethyl sulfate in non-polar, organic solvents in the absence of water at temperatures of about 40.degree. to about 120.degree. C.
摘要翻译：制备式（1）的纯2-乙基氨基-4-硝基-1-烷氧基苯的方法其中R表示烷基（C1-C4）或烷氧基（C1-C4） - 烷基（2）的2-氨基-4-硝基-1-烷氧基苯的N-单烷基化（其中R具有上述含义）使用非过氧化硫酸二乙酯的N-（C1-C4）基团，在约40℃至约120℃的温度下在不存在水的情况下进行极性有机溶剂

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