KR0152056B1 - 방향족 알독심의 제조방법 - Google Patents
방향족 알독심의 제조방법Info
- Publication number
- KR0152056B1 KR0152056B1 KR1019900700305A KR900700305A KR0152056B1 KR 0152056 B1 KR0152056 B1 KR 0152056B1 KR 1019900700305 A KR1019900700305 A KR 1019900700305A KR 900700305 A KR900700305 A KR 900700305A KR 0152056 B1 KR0152056 B1 KR 0152056B1
- Authority
- KR
- South Korea
- Prior art keywords
- aromatic
- phase
- aldoxin
- aqueous
- solution
- Prior art date
Links
- 125000003118 aryl group Chemical group 0.000 title claims description 21
- FZENGILVLUJGJX-NSCUHMNNSA-N (E)-acetaldehyde oxime Chemical compound C\C=N\O FZENGILVLUJGJX-NSCUHMNNSA-N 0.000 title description 2
- 238000004519 manufacturing process Methods 0.000 title description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 22
- 239000000243 solution Substances 0.000 claims description 20
- CAHQGWAXKLQREW-UHFFFAOYSA-N Benzal chloride Chemical compound ClC(Cl)C1=CC=CC=C1 CAHQGWAXKLQREW-UHFFFAOYSA-N 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- 239000012071 phase Substances 0.000 claims description 13
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 claims description 12
- VTWKXBJHBHYJBI-VURMDHGXSA-N (nz)-n-benzylidenehydroxylamine Chemical group O\N=C/C1=CC=CC=C1 VTWKXBJHBHYJBI-VURMDHGXSA-N 0.000 claims description 11
- 239000008346 aqueous phase Substances 0.000 claims description 11
- 239000012074 organic phase Substances 0.000 claims description 11
- ZNBNBTIDJSKEAM-UHFFFAOYSA-N 4-[7-hydroxy-2-[5-[5-[6-hydroxy-6-(hydroxymethyl)-3,5-dimethyloxan-2-yl]-3-methyloxolan-2-yl]-5-methyloxolan-2-yl]-2,8-dimethyl-1,10-dioxaspiro[4.5]decan-9-yl]-2-methyl-3-propanoyloxypentanoic acid Chemical group C1C(O)C(C)C(C(C)C(OC(=O)CC)C(C)C(O)=O)OC11OC(C)(C2OC(C)(CC2)C2C(CC(O2)C2C(CC(C)C(O)(CO)O2)C)C)CC1 ZNBNBTIDJSKEAM-UHFFFAOYSA-N 0.000 claims description 10
- 229910000378 hydroxylammonium sulfate Inorganic materials 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 150000002443 hydroxylamines Chemical class 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 7
- -1 benzal chlorite Chemical class 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 150000007529 inorganic bases Chemical class 0.000 claims description 3
- 238000006386 neutralization reaction Methods 0.000 claims description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 2
- 125000004414 alkyl thio group Chemical group 0.000 claims description 2
- 125000004104 aryloxy group Chemical group 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 2
- 125000005010 perfluoroalkyl group Chemical group 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 2
- 125000004183 alkoxy alkyl group Chemical group 0.000 claims 1
- 125000003710 aryl alkyl group Chemical group 0.000 claims 1
- 229910001919 chlorite Inorganic materials 0.000 claims 1
- 229910052619 chlorite group Inorganic materials 0.000 claims 1
- 230000003472 neutralizing effect Effects 0.000 claims 1
- 150000002923 oximes Chemical class 0.000 description 20
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 18
- 238000003756 stirring Methods 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000002585 base Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 238000004817 gas chromatography Methods 0.000 description 6
- 238000010992 reflux Methods 0.000 description 6
- 239000012153 distilled water Substances 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 4
- VTWKXBJHBHYJBI-UHFFFAOYSA-N n-benzylidenehydroxylamine Chemical class ON=CC1=CC=CC=C1 VTWKXBJHBHYJBI-UHFFFAOYSA-N 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000003760 magnetic stirring Methods 0.000 description 3
- ZIAHZFPHXNQNQN-UHFFFAOYSA-N 1-(dibromomethyl)-3-fluorobenzene Chemical compound FC1=CC=CC(C(Br)Br)=C1 ZIAHZFPHXNQNQN-UHFFFAOYSA-N 0.000 description 2
- MFIOEEWGBMJNGG-UHFFFAOYSA-N 1-(dichloromethyl)-4-fluorobenzene Chemical compound FC1=CC=C(C(Cl)Cl)C=C1 MFIOEEWGBMJNGG-UHFFFAOYSA-N 0.000 description 2
- PENXUAAQSIVXBE-UHFFFAOYSA-N 1-(dichloromethyl)naphthalene Chemical compound C1=CC=C2C(C(Cl)Cl)=CC=CC2=C1 PENXUAAQSIVXBE-UHFFFAOYSA-N 0.000 description 2
- FEWDXGMBVQULLN-UHFFFAOYSA-N 1-hydroxy-2-phenyl-1,5,6,7-tetrahydro-4H-benzimidazol-4-one Chemical compound ON1C=2CCCC(=O)C=2N=C1C1=CC=CC=C1 FEWDXGMBVQULLN-UHFFFAOYSA-N 0.000 description 2
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- PXAJQJMDEXJWFB-UHFFFAOYSA-N acetone oxime Chemical compound CC(C)=NO PXAJQJMDEXJWFB-UHFFFAOYSA-N 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000012455 biphasic mixture Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000012044 organic layer Substances 0.000 description 2
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- ZFFMHBULJWGCKI-UITAMQMPSA-N (nz)-n-[(3-fluorophenyl)methylidene]hydroxylamine Chemical compound O\N=C/C1=CC=CC(F)=C1 ZFFMHBULJWGCKI-UITAMQMPSA-N 0.000 description 1
- XEMRAKSQROQPBR-UHFFFAOYSA-N (trichloromethyl)benzene Chemical compound ClC(Cl)(Cl)C1=CC=CC=C1 XEMRAKSQROQPBR-UHFFFAOYSA-N 0.000 description 1
- QMXUQIHGAZFPEU-UHFFFAOYSA-N 1-(dibromomethyl)-2-methoxybenzene Chemical compound COC1=CC=CC=C1C(Br)Br QMXUQIHGAZFPEU-UHFFFAOYSA-N 0.000 description 1
- HQHJZSCJOXQOAY-UHFFFAOYSA-N 1-(dibromomethyl)-4-methylbenzene Chemical compound CC1=CC=C(C(Br)Br)C=C1 HQHJZSCJOXQOAY-UHFFFAOYSA-N 0.000 description 1
- MQEFUXFBDASQRZ-UHFFFAOYSA-N 1-(dibromomethyl)-4-methylsulfanylbenzene Chemical compound CSC1=CC=C(C(Br)Br)C=C1 MQEFUXFBDASQRZ-UHFFFAOYSA-N 0.000 description 1
- DYBVWMVJRMNQHW-UHFFFAOYSA-N 1-(dibromomethyl)naphthalene Chemical compound C1=CC=C2C(C(Br)Br)=CC=CC2=C1 DYBVWMVJRMNQHW-UHFFFAOYSA-N 0.000 description 1
- MVRCPAOYPLZMLB-UHFFFAOYSA-N 1-(dichloromethyl)-3-fluorobenzene Chemical compound FC1=CC=CC(C(Cl)Cl)=C1 MVRCPAOYPLZMLB-UHFFFAOYSA-N 0.000 description 1
- SIXBKLUCBANXOO-UHFFFAOYSA-N 1-(dichloromethyl)-3-methylsulfanylbenzene Chemical compound CSC1=CC=CC(C(Cl)Cl)=C1 SIXBKLUCBANXOO-UHFFFAOYSA-N 0.000 description 1
- OWLMWNCVHRNGCZ-UHFFFAOYSA-N 1-(dichloromethyl)-4-(methoxymethyl)benzene Chemical compound COCC1=CC=C(C(Cl)Cl)C=C1 OWLMWNCVHRNGCZ-UHFFFAOYSA-N 0.000 description 1
- GDZMMXXMEMTSJY-UHFFFAOYSA-N 1-(dichloromethyl)-4-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=C(C(Cl)Cl)C=C1 GDZMMXXMEMTSJY-UHFFFAOYSA-N 0.000 description 1
- UKVWNSDFMYZNKC-UHFFFAOYSA-N 1-(dichloromethyl)-4-methoxybenzene Chemical compound COC1=CC=C(C(Cl)Cl)C=C1 UKVWNSDFMYZNKC-UHFFFAOYSA-N 0.000 description 1
- RGDYIHSZBVIIND-UHFFFAOYSA-N 1-(dichloromethyl)-4-methylbenzene Chemical compound CC1=CC=C(C(Cl)Cl)C=C1 RGDYIHSZBVIIND-UHFFFAOYSA-N 0.000 description 1
- RAZKIGBWDJNTKX-UHFFFAOYSA-N 1-(dichloromethyl)-4-phenylbenzene Chemical compound C1=CC(C(Cl)Cl)=CC=C1C1=CC=CC=C1 RAZKIGBWDJNTKX-UHFFFAOYSA-N 0.000 description 1
- UOQRQGWCPNVOJD-UHFFFAOYSA-N 1-benzyl-4-(dichloromethyl)benzene Chemical compound C1=CC(C(Cl)Cl)=CC=C1CC1=CC=CC=C1 UOQRQGWCPNVOJD-UHFFFAOYSA-N 0.000 description 1
- ZEOVXNVKXIPWMS-UHFFFAOYSA-N 2,2-dichloropropane Chemical compound CC(C)(Cl)Cl ZEOVXNVKXIPWMS-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- FZENGILVLUJGJX-UHFFFAOYSA-N acetaldehyde oxime Chemical class CC=NO FZENGILVLUJGJX-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 150000003934 aromatic aldehydes Chemical class 0.000 description 1
- KCXMKQUNVWSEMD-UHFFFAOYSA-N benzyl chloride Chemical compound ClCC1=CC=CC=C1 KCXMKQUNVWSEMD-UHFFFAOYSA-N 0.000 description 1
- 229940073608 benzyl chloride Drugs 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000012230 colorless oil Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000003840 hydrochlorides Chemical class 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- FSKSLWXDUJVTHE-UHFFFAOYSA-N n-[(4-fluorophenyl)methylidene]hydroxylamine Chemical compound ON=CC1=CC=C(F)C=C1 FSKSLWXDUJVTHE-UHFFFAOYSA-N 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 150000003254 radicals Chemical group 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C249/00—Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton
- C07C249/04—Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton of oximes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C249/00—Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton
- C07C249/04—Preparation of compounds containing nitrogen atoms doubly-bound to a carbon skeleton of oximes
- C07C249/14—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C251/00—Compounds containing nitrogen atoms doubly-bound to a carbon skeleton
- C07C251/32—Oximes
- C07C251/34—Oximes with oxygen atoms of oxyimino groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
- C07C251/48—Oximes with oxygen atoms of oxyimino groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals with the carbon atom of at least one of the oxyimino groups bound to a carbon atom of a six-membered aromatic ring
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims (10)
- (a) 생성되는 알독심을 용액 상태로 유지하기에 충분한 양의 염기성 수용액 존재하에 방향족 α, α-디할라이드 화합물을 히드록실아민염과 반응시켜 상응하는 방향족 알독심을 형성하는 단계; (b) 상기 방향족 디할라이드 화합물중에 존재하는 유기상을 상분리하여 상기 단계 (a)에서 형성된 알독심을 함유하는 수성상을 얻는 단계; (c) 상기 단계 (b)의 수성상을 중화하여, 상기 알독심을 함유하는 별도의 상으로 분리하는 단계 ; 및 (d) 상기 단계 (c)에서 분리된 알독심-함유상으로부터 알독심을 회수하는 단계;로 이루어지는 방향족 알독심의 제조 방법.
- 제1항에 있어서, 상기 방향족 α, α'-디할라이드 화합물이 하기 식을 갖는 화합물임을 특징으로 하는 방법.상기 식중 X는 Cl, Br 혹은 I이고 ; R은 수소, 알킬, 알콕시알킬, 아릴, 아릴킬, 알킬티오, 아릴옥시, 불소 및 퍼플루오로알킬로 구성되는 그룹으로부터 선택된 기이며 ; n은 1-5의 정수이다.
- 제1항에 있어서, 상기 단계(a)의 염기는 무기 염기임을 특징으로 하는 방법.
- 제2항에 있어서, 상기 방향족 α, α-디할라이드 화합물이 벤잘 클로라이드이고 산출되는 알독심이 벤즈알데히드 옥심임을 특징으로 하는 방법.
- 제3항에 있어서, 상기 염기는 수산화나트륨임을 특징으로 하는 방법.
- 제1항에 있어서, 상기 히드록실아민염이 히드록실아민 술페이트임을 특징으로 하는 방법.
- 제4항에 있어서, 상기 단계 (b)에서의 유기상이 벤잘 클로라이트내의 불순물을 포함함을 특징으로 하는 방법.
- 제1항에 있어서, 상기 단계 (c)에서의 중화가 수성상의 pH가 약 7이 될 때까지 산수용액을 첨가함에 의해 수행됨을 특징으로 하는 방법.
- 제8항에 있어서, 상기 산 수용액은 염산임을 특징으로 하는 방법.
- 제1항에 있어서, 상기 반응이 50-80℃의 온도에서 수행됨을 특징으로 하는 방법.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/208,438 US4922017A (en) | 1988-06-20 | 1988-06-20 | Process for production of aromatic aldoximes |
US208,438 | 1988-06-20 | ||
PCT/US1989/002377 WO1989012623A1 (en) | 1988-06-20 | 1989-05-31 | Process for production of aromatic aldoximes |
Publications (2)
Publication Number | Publication Date |
---|---|
KR900701739A KR900701739A (ko) | 1990-12-04 |
KR0152056B1 true KR0152056B1 (ko) | 1998-10-15 |
Family
ID=22774610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019900700305A KR0152056B1 (ko) | 1988-06-20 | 1989-05-31 | 방향족 알독심의 제조방법 |
Country Status (7)
Country | Link |
---|---|
US (1) | US4922017A (ko) |
EP (1) | EP0420941B1 (ko) |
JP (1) | JPH0676362B2 (ko) |
KR (1) | KR0152056B1 (ko) |
DE (1) | DE68912329T2 (ko) |
ES (1) | ES2013197A6 (ko) |
WO (1) | WO1989012623A1 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021117053A1 (en) * | 2019-12-12 | 2021-06-17 | Dr. Silviu Pharmachem Pvt. Ltd. | An improved process for preparation of pure aldoxime |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3081347A (en) * | 1958-12-29 | 1963-03-12 | Exxon Research Engineering Co | Preparation of polyaminomethyl aromatic compounds |
US3129260A (en) * | 1961-01-30 | 1964-04-14 | Shell Oil Co | Preparation of a benzaldoxime |
NL301053A (ko) * | 1963-11-27 | |||
US3624157A (en) * | 1969-12-17 | 1971-11-30 | Velsicol Chemical Corp | Process for preparing ortho-chlorobenzaldehyde |
US4323706A (en) * | 1978-02-23 | 1982-04-06 | Allied Corporation | Production of acetaldehyde oxime |
JPS56166131A (en) * | 1980-05-26 | 1981-12-21 | Nippon Oil & Fats Co Ltd | Preparation of mixture of m-phenoxybenzyl alcohol with m-phenoxybenzaldehyde |
-
1988
- 1988-06-20 US US07/208,438 patent/US4922017A/en not_active Expired - Lifetime
-
1989
- 1989-05-31 DE DE89908346T patent/DE68912329T2/de not_active Expired - Fee Related
- 1989-05-31 KR KR1019900700305A patent/KR0152056B1/ko not_active IP Right Cessation
- 1989-05-31 JP JP1507979A patent/JPH0676362B2/ja not_active Expired - Fee Related
- 1989-05-31 EP EP89908346A patent/EP0420941B1/en not_active Expired - Lifetime
- 1989-05-31 WO PCT/US1989/002377 patent/WO1989012623A1/en active IP Right Grant
- 1989-06-15 ES ES8902099A patent/ES2013197A6/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US4922017A (en) | 1990-05-01 |
DE68912329D1 (de) | 1994-02-24 |
WO1989012623A1 (en) | 1989-12-28 |
EP0420941A1 (en) | 1991-04-10 |
ES2013197A6 (es) | 1990-04-16 |
DE68912329T2 (de) | 1994-04-28 |
JPH03501977A (ja) | 1991-05-09 |
JPH0676362B2 (ja) | 1994-09-28 |
KR900701739A (ko) | 1990-12-04 |
EP0420941B1 (en) | 1994-01-12 |
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