WO2001081293A1 - Procede de production d'un compose bis (4-hydroxy-3-nitrophenyl) - Google Patents
Procede de production d'un compose bis (4-hydroxy-3-nitrophenyl) Download PDFInfo
- Publication number
- WO2001081293A1 WO2001081293A1 PCT/JP2001/003434 JP0103434W WO0181293A1 WO 2001081293 A1 WO2001081293 A1 WO 2001081293A1 JP 0103434 W JP0103434 W JP 0103434W WO 0181293 A1 WO0181293 A1 WO 0181293A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydroxy
- bis
- group
- ditrophenyl
- nitrophenyl
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
- C07C201/06—Preparation of nitro compounds
- C07C201/08—Preparation of nitro compounds by substitution of hydrogen atoms by nitro groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C315/00—Preparation of sulfones; Preparation of sulfoxides
- C07C315/04—Preparation of sulfones; Preparation of sulfoxides by reactions not involving the formation of sulfone or sulfoxide groups
Definitions
- the present invention relates to a process for producing bis (4-hydroxy-3-nitrophenyl) s, which are intermediates for polymers.
- Bis (3-amino-4-hydroxyphenyl) s obtained by reducing bis (4-hydroxy-3-ditrophenyl) s are expected to be photosensitive heat-resistant polymers for VLSI and high heat-resistant and high-strength polymers. It is an important intermediate because it is used as a raw material monomer for poly (benzoxazole).
- the following method is known as a method for producing bis (4-hydroxyphenyl) s in which two phenyl groups are bonded directly or by an electron-donating crosslinking group.
- JP-A-59-27950 discloses a method of nitrating 4,4'-biphenyl with 70% nitric acid in a large amount of an acetic acid solvent.
- the crude product was obtained by filtration in a yield of 85% and recrystallized from acetic acid to give 3,3-dinitro-1,4'-dihydroxypiphenyl used for the polymer.
- two phenyl groups such as 4,4′-biphenol and 2,2-bis (4-hydroxy-3-nitrotropen) propane are directly bonded or electron donated.
- 2,2-bis (4-hydroxyphenyl) hexafluoropropane in which two phenyl groups are cross-linked by an electron-withdrawing group, is nitrated to form 2,2-bis (4-hydroxy-3-2- Japanese Patent Application Laid-Open No. 63-333533 discloses a method for producing hexofuropropane using 50% nitric acid in the form of chlorobutane in the absence of any acid other than nitric acid. A method for nitrating at a temperature of 15 to 25 ° C is specifically disclosed.
- the present invention provides a highly reactive compound in which two phenyl groups such as 4,4'-biphenyl or 2,2-bis (4-hydroxy-3-ditrophenyl) propane are bonded directly or by an electron-donating crosslinking group. Unlike conventional methods, bis (4-hydroxyphenyl), which is liable to undergo trinitration, is dinitrated with little formation of trinitrate, purifying the desired bis (4-hydroxy-3-ditrophenyl).
- An object of the present invention is to provide a nitration method which can be obtained in a high yield of about 90% in yield and can be easily carried out on an industrial scale. Disclosure of the invention
- Bis (4-hydroxyphenyl) s in which two phenyl groups are directly bonded or linked by an electron-donating cross-linking group, a sulfoxide group, a sulfone group or a carbonyl group are substantially different from each other in an inert solvent.
- X represents methylene, 2,2-isopropylene, oxy, thio, sulfoxide, sulfone, carbonyl, or a direct bond
- R may represent different substituents, and may be substituted with a hydrogen atom or halogen.
- Substituted with an alkyl group which may be substituted an alkoxy group which may be substituted with a halogen, an acyloxy group, a carboxyl group, an alkyloxycarbonyl group, a carbamoyl group, a mono- or di- (C 1 -C 6) alkyl group
- (1) represents a compound represented by an amino group, a hydroxy group or a halogen atom which may be substituted, and the method for producing bis (4-hydroxy-13-2-trophenyl) s described in (1) above.
- Bis (4-hydroxy-3-nitrophenyl) is 2,2-bis (4-hydroxy-3-nitrophenyl) propane, di (4-hydroxy-3-nitro-2-phenyl) edel or 4,4'-dihydroxy-1
- Nitration is performed using a nitric acid aqueous solution having a nitric acid concentration of 55% to 85% at a reaction temperature of 15 ° C to 10 ° C.
- the electron donating crosslinking group in the present invention is not particularly limited as long as it is an electron donating crosslinking group.
- X represents a direct bond between methylene, 2,2-isopropylene, oxy, thio, sulfoxide, sulfone, carbonyl or phenyl groups.
- an alkyl group optionally substituted with fluorine ' (for example, fluorine-substituted or Unsubstituted alkyl groups having 1 to 6 carbon atoms) are preferable, and specific examples thereof include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, pentyl, hexyl, and triflur.
- alkoxy group optionally substituted with halogen (for example, halogen-substituted or unsubstituted alkoxy group having 1 to 10 carbon atoms), an alkoxy group which is substituted with fluorine (for example, 1 to 6 fluorine atoms)
- fluorine for example, 1 to 6 fluorine atoms
- An optionally substituted alkoxy group having 1 to 6 carbon atoms for example, methoxy, ethoxy, propoxy, butoxy, pentyloxy, hexyloxy, trifluoromethoxy, perfluoroethoxy, hexafluoropropoxy. And the like.
- acyloxy group examples include an acyloxy group having 1 to 10 carbon atoms which may be substituted with halogen or the like, and specific examples thereof include acetoxy, propionyloxy, petyryloxy, trifluoroacetoxy and the like. I can do it.
- alkyloxycarbonyl group examples include, for example, an alkyloxycarbonyl group having 1 to 10 carbon atoms which may be substituted by halogen or the like. Specific examples thereof include methoxycarbonyl, ethoxycarbonyl, and propoxycarbonyl. And butoxycarbonyl.
- carbamoyl group examples include carbamoyl groups which may be substituted with alkyl having 1 to 10 carbon atoms, and specific examples thereof include carbamoyl, methylcarbamoyl, ethylcarbamoyl, n-propyl —Butyl carbamoyl, dimethylcarbamoyl, getyl carbamoyl, di-n-propyl carbamoyl, di-n-butyl carbamoyl, etc., and each is preferably an unsubstituted rubamoyl group.
- Examples of the amino group which may be substituted with a mono- or di- (C 1 -C 6) alkyl group include an unsubstituted amino group, a monomethylamino group, a diamino-amino group and the like.
- Examples of the halogen atom include fluorine, chlorine, bromine and iodine, and fluorine is preferred.
- the two Rs may be different from each other, but are preferably the same.
- the (4-hydroxy-3-nitrophenyl) s represented by the formula (1) obtained by the production method of the present invention include bis (4-hydroxy-3-nitro) methanes and 2,2-bis (4-hydroxy-). 3-nitrophenylpropanes, di (4-hydroxy-3-ditrophenyl) ethers, bis (4-hydroxy-3-nitrotropenyl) sulfides, bis (4-hydroxy-3-ditrophenyl) sulfoxides, bis (4-hydroxy-) 3-nitrophenyl) sul Hons, bis (4-hydroxy-1-3-nitrophenyl) ketones, 4,4'-dihydroxy-3,3'-dinitrobiphenyls.
- bis (4-hydroxy-3-nitrophenyl) methanes include bis (4-hydroxy-3-nitrophenyl) methane, bis (4-hydroxy-13-nitro-5-methylphenyl) methane, bis (4-hydroxy-3-) 2-tallow 5-trifluoromethylphenyl) methane, bis (4-hydroxy-3-12thro-5-methoxyphenyl) methane, bis (4-hydroxy-3-2-to-6-methoxyphenyl) methane, bis (4 -Hydroxy-1-3-nitro-5-acetoxyphenyl) methane, bis (4-hydroxy-13-nitro-5-methoxycarbonylphenyl) methane, bis (4-hydroxy-13-nitro-15-ethylethylcarbamoylphenyl) 5-position of methane, bis (4-hydroxy-3-nitro 5-fluorophenyl) methane, etc. And bis-substituted by the above-mentioned R in the 6-position (4-hydroxy one 3 _ nitro one 5 or 6- R
- 2,2-bis (4-hydroxy-3-nitrophenyl) propane examples include 2,2-bis (4-hydroxy-13-nitrophenyl) propane and 2,2-bis (4-hydroxy-3-nitro) propane. Toro 5-ethylphenylpropane, 2,2-bis (4-hydroxy-13-nitro-15-trifluoromethylphenyl) propane, 2,2-bis (4-hydroxy-13-nitro-15-methoxyphenyl) Propane, 2,2-bis (4-hydroxy_3-nitro-2-5-acetoxyphenyl) propane, 2,2-bis (4-hydroxy-14-nitro-16-acetoxyphenyl) propane, 2,, 2 _bis (4-hydroxy-3-nitro-1-ethoxycarbonylphenyl) propane, 2,2-bis (4-hydroxy-3-nitro-5-methylcarbamoylphenyl) propane, 2,2- Bis (4-hydroxy-3-nitro-5- or 5-R) propane substituted at the 5- or 6-position with R as described above, such as bis (4-hydroxy-3-nitro-5-fluorophenyl) propane.
- di (4-hydroxy-3-ditrophenyl) ethers include: Di (4-hydroxy-3-nitro-2-phenyl), ether, di (4-hydroxy-3-nitro-6-methylphenyl) ether, di (4-hydroxy-3-2-to-1-5-carboxyalkylphenyl) ether R at the 5- or 6-position of di (4-hydroxy-3-nitro-1-5-trifluoromethylphenyl) ether, di (4-hydroxy-3--2-tro-6-chlorophenyl) ether, etc.
- Substituted di (4-hydroxy-3-nitro-15 or 6-R) ethers and the like are mentioned, and among these, di (4-hydroxy-3-ditrophenyl) ether is particularly preferred.
- bis (3-ditro-4-hydroxyphenyl) sulfides include bis (3-nitro-4-hydroxyphenyl) sulphide and bis (3-ditro-4-hydroxy-5-isobutylphenyl).
- bis (3-nitro-4-hydroxyphenyl) sulfones include bis (3-nitro-4-hydroxyphenyl) sulfone and bis (3-nitro-14-hydroxy-5-isobutylphenyl).
- Bis (4) such as sulfone, bis (3-nitro-4-hydroxy-6-propanoylphenyl) sulfone, bis (3-nitro-4-hydroxy_5— (N, N-dipropylamino) phenyl) sulfone Di (4-hydroxy-3-nitro-5- or 6-R) sulfone substituted with R at the 5- or 6-position such as —hydroxy-3-nitro-5 or 6-R) sulfone.
- bis (3-ditro-4-hydroxyphenyl) ketones include bis (3-ditro-4-hydroxy-6-methylphenyl) ketone and bis (32-itro-4-hydroxy-5-ethoxyphenyl) ketone.
- 4,4'-dihydroxy-3,3'-dinitrobiphenyls include 4,4'-dihydroxy-3,3'-dinitropiphenyl, 4,4'-dihydroxy-3,3'-dinitro 5,5'-difluorobiphenyl, 4,4'-dihydroxy-3,3'-dinitro-1,5'-ditrifluoromethylbiphenyl, 4,4'-dihydroxy-1,3'-dinitro-1 5,5'-Dimethoxycarbonyldibiphenyl, 4,4'-dihydroxy_3,3'-dinitro-1,6,6'-dimethylphenyl, etc. Of these, 4,4'-dihydroxy-3,3'-dinitrobiphenyl is particularly preferred.
- the starting compound bis (4-hydroxyphenyl) used in the production method of the present invention is a compound corresponding to the target compound obtained by removing the nitro group at the 3-position from the bis (4-hydroxy-3-ditrophenyl) compound of the target compound And, for example, a compound having no nitro group bonded to the bis (4-hydroxy-3-ditrophenyl) s represented by the formula (1). That is, the starting compound of bis (4-hydroxy-13-nitrophenyl) methanes is the corresponding 2,2-bis (4-hydroxyphenyl) methanes and 2,2-bis (4-hydroxy-3-nitrophenyl) methane.
- the starting compound for propanes is the corresponding 2,2-bis (4-hydroxyphenyl) propane, and the starting compound for di (4-hydroxy-3-ditrophenyl) ether is the corresponding di (4-hydroxyphenyl) ether.
- the starting compound for (4-hydroxy-3-nitrophenyl) sulfides is the corresponding bis (4-hydroxyphenyl) sulphide
- the starting compound for bis (4-hydroxy-3-nitrophenyl) sulphoxide is the corresponding bis (4-hydroxyphenyl) sulphoxide.
- (4-hydroxyphenyl) sulfoxides and the starting compound of bis (4-hydroxy-13-ditrophenyl) sulfone is the corresponding bis (4-hydroxyphenyl) sulfone, bis (4-hydroxy-3 —Nitrophenyl) keto
- the starting compounds of the diamines are the corresponding bis (4-hydroxyphenyl) ketones, and the starting compounds of the 4,4'-dihydroxy-3,3'-dinitrobiphenyls are the corresponding 4,4'-dihydroxypiphenylskind.
- These compounds serving as starting compounds in the production method of the present invention are industrially easily available, or can be easily obtained by a conventionally known technique.
- the nitric acid used in the present invention is an aqueous solution having a concentration of 10 to 95% (mass: hereinafter the same unless otherwise specified), and commercially available industrial nitric acid is used as it is or after dilution with water.
- a preferred nitric acid concentration is 55% or more, more preferably 60% or more, and 85% or less, more preferably 75% or less.
- the amount of nitric acid to be used is usually 1.7 to 3 mol per 1 mol of bis (4-hydroxyphenyl) s, preferably in the vicinity of the theoretical amount, for example, 1.8 mol or more, more preferably 1 mol or more.
- the range is from 9 moles to 2.4 moles, more preferably 2.3 moles or less, and even more preferably 2.2 moles or less.
- the reaction temperature according to the present invention is usually 15 to 35 ° C, preferably 15 ° C or more, 10 ° C or less, more preferably 5 ° C or less.
- the production method of the present invention is usually performed in the presence of an inert solvent.
- an inert solvent an aliphatic or aromatic chlorinated hydrocarbon is preferable.
- Specific examples of the aliphatic chlorinated hydrocarbon that can be used include dichloromethane, chloroform, carbon tetrachloride, 1,2-dichloroethane, and the like. 1, 1-dichloroethane, 1, 1, 1-trichloromouth ethane, etc.
- 1 to 6 preferably 2 to 4 substituted aliphatic hydrocarbons having 1 to 3 carbon atoms, likewise aromatic chlorine
- fluorinated hydrocarbon include one to three chlorine atoms such as benzene having a monochrome mouth, orthobenzene benzene, and 1,2,3-trichlorobenzene, and preferably substituted benzene. Of these, dichloromethane, 1,2-dichloroethane, monochlorobenzene and orthodichlorobenzene are more preferred.
- the amount of the solvent used in the reaction is usually 3 to 20 times (by mass), preferably about 5 to 10 times, the amount of bis (4-hydroxyphenyl).
- bis (4-hydroxyf The phenyl) is dissolved or dispersed in an inert solvent such as dichloromethane by stirring, and a predetermined amount of nitric acid is gradually added while maintaining the predetermined temperature.
- the injection time is usually between 0.5 and 20 hours, but preferably between 3 and 10 hours.
- the temperature is further maintained at a predetermined temperature, and stirring is continued for 0.5 to 10 hours to complete the reaction.
- Water is added to the reaction mixture to separate an organic layer and an aqueous layer. The organic layer is washed with a dilute aqueous solution until neutral, and the solvent is distilled off to obtain a crude product. If the reaction mixture is in a suspended state, water is added, and the mixture is filtered, and the filter cake is washed with a dilute aqueous solution of water and then with water until the filtrate becomes neutral to obtain a crude product.
- a dispersant may be added in order to improve mixing and fluidity.
- the dispersant that can be used include an alkylbenzene sulfonate, a naphthalene sulfonate formalin condensate, an acrylic acid-maleate copolymer, and a condensed phosphate.
- the crude product may be, if necessary, alcohols such as methanol, ethanol, isopropanol, etc., ethers such as ethylene glycol monoethyl ether, tetrahydrofuran, etc., 2-butanoone, 3-methyl-2-butanoone, etc. It can be purified by recrystallization from aprotic polar solvents such as ketones, dimethylformamide, dimethylacetamide and N-methyl-2-pyrrolidone.
- aprotic polar solvents such as ketones, dimethylformamide, dimethylacetamide and N-methyl-2-pyrrolidone.
- Example 1 Preparation of 4,4′-dihydroxy-3,3′-dinitrobiphenyl
- the reaction was further completed by stirring at the same temperature for 3 hours.
- bis (4-hydroxy-3-ditrophenyls) in which two phenyl groups are bonded directly or by an electron-donating cross-linking group, which has a significantly low content of dangerous trinitro compounds can be obtained at a high yield.
- High-purity products suitable for raw materials (intermediates), such as heat-resistant polymers, can be easily obtained by recrystallization in high yield.
- (4-Hydroxy-3-nitrophenyls can be obtained with high purity and high yield.
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Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01921981A EP1277727A4 (en) | 2000-04-25 | 2001-04-23 | PROCESS FOR PREPARING A BIS (4-HYDROXY-3-NITROPHENYL) COMPOUND |
KR1020027013908A KR20020089486A (ko) | 2000-04-25 | 2001-04-23 | 비스(4-하이드록시-3-니트로페닐) 화합물의 제조방법 |
US10/257,218 US6608233B2 (en) | 2000-04-25 | 2001-04-23 | Process for producting bis(4-hydroxy-3-nitrophenyl) compound |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000123430 | 2000-04-25 | ||
JP2000-123430 | 2000-04-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001081293A1 true WO2001081293A1 (fr) | 2001-11-01 |
Family
ID=18633734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/003434 WO2001081293A1 (fr) | 2000-04-25 | 2001-04-23 | Procede de production d'un compose bis (4-hydroxy-3-nitrophenyl) |
Country Status (5)
Country | Link |
---|---|
US (1) | US6608233B2 (ja) |
EP (1) | EP1277727A4 (ja) |
KR (1) | KR20020089486A (ja) |
CN (1) | CN1216851C (ja) |
WO (1) | WO2001081293A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009221118A (ja) * | 2008-03-13 | 2009-10-01 | Air Water Inc | 4,4’−エチリデンビス(2,5−ジメチル−6−ニトロフェノール)の製造方法 |
JP2010195748A (ja) * | 2009-02-27 | 2010-09-09 | Air Water Inc | ビス(3−ニトロ−4−ヒドロキシフェニル)類の製造方法 |
JP2010195749A (ja) * | 2009-02-27 | 2010-09-09 | Air Water Inc | ビス(3−ニトロ−4−ヒドロキシフェニル)類の製造方法 |
CN103664685A (zh) * | 2013-11-20 | 2014-03-26 | 山西大同大学 | 3,3′-双(2-羟基-1-萘氨基偶氮基)-4,4′-联苯二酚及其制备方法和应用 |
JP2014076954A (ja) * | 2012-10-09 | 2014-05-01 | Air Water Inc | 3,3’−ジニトロ−4,4’−ジヒドロキシジフェニルエーテルの製造方法 |
JP2014076955A (ja) * | 2012-10-09 | 2014-05-01 | Air Water Inc | 3,3’−ジニトロ−4,4’−ジヒドロキシジフェニルエーテルの精製方法および3,3’−ジニトロ−4,4’−ジヒドロキシジフェニルエーテル組成物の製造方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110156613B (zh) * | 2019-04-30 | 2022-09-30 | 浙江工业大学 | 一种3,3-二氨基联苯酚盐酸盐的合成方法 |
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EP0254990A1 (de) * | 1986-07-23 | 1988-02-03 | Hoechst Aktiengesellschaft | Verfahren zur Herstellung von 2.2-Bis-(4-hydroxy-3-nitrophenyl)-hexafluorpropan |
JPH06211752A (ja) * | 1993-01-18 | 1994-08-02 | Central Glass Co Ltd | 2,2−ビス(3−ニトロ−4−ヒドロキシフェニル)ヘキサフルオロプロパンの製造方法 |
JPH11106365A (ja) * | 1997-10-02 | 1999-04-20 | Nippon Kayaku Co Ltd | ビス(3−ニトロ−4−ヒドロキシフェニル)類の製造方法 |
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US2615052A (en) * | 1950-06-23 | 1952-10-21 | Allied Lab Inc | 2,2'-methylenebis(4-chloro-6-nitrophenol) and a method for its production |
US2739941A (en) * | 1952-09-13 | 1956-03-27 | Gen Aniline & Film Corp | Germicidal soap composition |
US3563950A (en) * | 1969-07-09 | 1971-02-16 | Celanese Corp | Linear polybenzoxazoles |
JPS5927950A (ja) | 1982-07-13 | 1984-02-14 | シエブロン・リサ−チ・コンパニ− | 電気活性複素環式ポリマ− |
US4505840A (en) * | 1982-07-13 | 1985-03-19 | Chevron Research Company | Heterocyclic electroactive polymers |
DE3704005A1 (de) * | 1987-02-10 | 1988-08-18 | Hoechst Ag | Verfahren zur herstellung von derivaten des 2,2-bis (4-hydroxyphenyl)hexafluorpropans sowie solche neuen derivate |
JPH01301653A (ja) * | 1988-05-31 | 1989-12-05 | Central Glass Co Ltd | 2,2−ビス(3−ニトロ−4−ヒドロキシフェニル)ヘキサフルオロプロパンの製造法 |
JPH05109546A (ja) | 1991-10-14 | 1993-04-30 | Toshiba Corp | ギヤツプ付鉄心形リアクトル |
US5151488A (en) * | 1991-11-12 | 1992-09-29 | The Mead Corporation | Liquid crystal polymers containing a repeating bisoxazole structure |
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2001
- 2001-04-23 US US10/257,218 patent/US6608233B2/en not_active Expired - Fee Related
- 2001-04-23 WO PCT/JP2001/003434 patent/WO2001081293A1/ja not_active Application Discontinuation
- 2001-04-23 KR KR1020027013908A patent/KR20020089486A/ko not_active Application Discontinuation
- 2001-04-23 EP EP01921981A patent/EP1277727A4/en not_active Withdrawn
- 2001-04-23 CN CN018085156A patent/CN1216851C/zh not_active Expired - Fee Related
Patent Citations (3)
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EP0254990A1 (de) * | 1986-07-23 | 1988-02-03 | Hoechst Aktiengesellschaft | Verfahren zur Herstellung von 2.2-Bis-(4-hydroxy-3-nitrophenyl)-hexafluorpropan |
JPH06211752A (ja) * | 1993-01-18 | 1994-08-02 | Central Glass Co Ltd | 2,2−ビス(3−ニトロ−4−ヒドロキシフェニル)ヘキサフルオロプロパンの製造方法 |
JPH11106365A (ja) * | 1997-10-02 | 1999-04-20 | Nippon Kayaku Co Ltd | ビス(3−ニトロ−4−ヒドロキシフェニル)類の製造方法 |
Non-Patent Citations (1)
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009221118A (ja) * | 2008-03-13 | 2009-10-01 | Air Water Inc | 4,4’−エチリデンビス(2,5−ジメチル−6−ニトロフェノール)の製造方法 |
JP2010195748A (ja) * | 2009-02-27 | 2010-09-09 | Air Water Inc | ビス(3−ニトロ−4−ヒドロキシフェニル)類の製造方法 |
JP2010195749A (ja) * | 2009-02-27 | 2010-09-09 | Air Water Inc | ビス(3−ニトロ−4−ヒドロキシフェニル)類の製造方法 |
JP2014076954A (ja) * | 2012-10-09 | 2014-05-01 | Air Water Inc | 3,3’−ジニトロ−4,4’−ジヒドロキシジフェニルエーテルの製造方法 |
JP2014076955A (ja) * | 2012-10-09 | 2014-05-01 | Air Water Inc | 3,3’−ジニトロ−4,4’−ジヒドロキシジフェニルエーテルの精製方法および3,3’−ジニトロ−4,4’−ジヒドロキシジフェニルエーテル組成物の製造方法 |
CN103664685A (zh) * | 2013-11-20 | 2014-03-26 | 山西大同大学 | 3,3′-双(2-羟基-1-萘氨基偶氮基)-4,4′-联苯二酚及其制备方法和应用 |
CN103664685B (zh) * | 2013-11-20 | 2015-10-28 | 山西大同大学 | 3,3′-双(2-羟基-1-萘氨基偶氮基)-4,4′-联苯二酚及其制备方法和应用 |
Also Published As
Publication number | Publication date |
---|---|
CN1426390A (zh) | 2003-06-25 |
US6608233B2 (en) | 2003-08-19 |
KR20020089486A (ko) | 2002-11-29 |
EP1277727A4 (en) | 2005-06-15 |
US20030055288A1 (en) | 2003-03-20 |
CN1216851C (zh) | 2005-08-31 |
EP1277727A1 (en) | 2003-01-22 |
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