CN115784911A - 一种1-[2-(4-氯苯基)-乙基氨基]-2-丙醇的合成方法 - Google Patents
一种1-[2-(4-氯苯基)-乙基氨基]-2-丙醇的合成方法 Download PDFInfo
- Publication number
- CN115784911A CN115784911A CN202211282546.1A CN202211282546A CN115784911A CN 115784911 A CN115784911 A CN 115784911A CN 202211282546 A CN202211282546 A CN 202211282546A CN 115784911 A CN115784911 A CN 115784911A
- Authority
- CN
- China
- Prior art keywords
- reacting
- bromide
- ethylamino
- propanol
- chlorphenyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- URWKQIHYBHDHPD-UHFFFAOYSA-N 1-[2-(4-chlorophenyl)ethylamino]propan-2-ol Chemical compound CC(O)CNCCC1=CC=C(Cl)C=C1 URWKQIHYBHDHPD-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 238000010189 synthetic method Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 8
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910001513 alkali metal bromide Inorganic materials 0.000 claims abstract description 5
- XJQDSZGDDUJVHC-UHFFFAOYSA-N chlorobenzene;ethanol Chemical compound CCO.ClC1=CC=CC=C1 XJQDSZGDDUJVHC-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229940102253 isopropanolamine Drugs 0.000 claims abstract description 5
- 238000005886 esterification reaction Methods 0.000 claims abstract description 4
- 230000032050 esterification Effects 0.000 claims abstract description 3
- 230000002194 synthesizing effect Effects 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 16
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 12
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 12
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 8
- YYROPELSRYBVMQ-UHFFFAOYSA-N 4-toluenesulfonyl chloride Chemical compound CC1=CC=C(S(Cl)(=O)=O)C=C1 YYROPELSRYBVMQ-UHFFFAOYSA-N 0.000 claims description 8
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003880 polar aprotic solvent Substances 0.000 claims description 5
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 4
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims description 4
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 claims description 4
- PDVFSPNIEOYOQL-UHFFFAOYSA-N (4-methylphenyl)sulfonyl 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)OS(=O)(=O)C1=CC=C(C)C=C1 PDVFSPNIEOYOQL-UHFFFAOYSA-N 0.000 claims description 2
- GSNUFIFRDBKVIE-UHFFFAOYSA-N DMF Natural products CC1=CC=C(C)O1 GSNUFIFRDBKVIE-UHFFFAOYSA-N 0.000 claims description 2
- 239000012359 Methanesulfonyl chloride Substances 0.000 claims description 2
- ISWLBKSJXPZVBX-UHFFFAOYSA-N benzylsulfonyl phenylmethanesulfonate Chemical compound C=1C=CC=CC=1CS(=O)(=O)OS(=O)(=O)CC1=CC=CC=C1 ISWLBKSJXPZVBX-UHFFFAOYSA-N 0.000 claims description 2
- IZDROVVXIHRYMH-UHFFFAOYSA-N methanesulfonic anhydride Chemical compound CS(=O)(=O)OS(C)(=O)=O IZDROVVXIHRYMH-UHFFFAOYSA-N 0.000 claims description 2
- QARBMVPHQWIHKH-UHFFFAOYSA-N methanesulfonyl chloride Chemical compound CS(Cl)(=O)=O QARBMVPHQWIHKH-UHFFFAOYSA-N 0.000 claims description 2
- OAHKWDDSKCRNFE-UHFFFAOYSA-N phenylmethanesulfonyl chloride Chemical compound ClS(=O)(=O)CC1=CC=CC=C1 OAHKWDDSKCRNFE-UHFFFAOYSA-N 0.000 claims description 2
- YAFMYKFAUNCQPU-UHFFFAOYSA-N 1-(2-bromoethyl)-4-chlorobenzene Chemical compound ClC1=CC=C(CCBr)C=C1 YAFMYKFAUNCQPU-UHFFFAOYSA-N 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000009776 industrial production Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 abstract 2
- 150000002148 esters Chemical class 0.000 abstract 2
- 239000012467 final product Substances 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000012074 organic phase Substances 0.000 description 4
- 239000011541 reaction mixture Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- XTTZERNUQAFMOF-QMMMGPOBSA-N lorcaserin Chemical compound C[C@H]1CNCCC2=CC=C(Cl)C=C12 XTTZERNUQAFMOF-QMMMGPOBSA-N 0.000 description 3
- 229960005060 lorcaserin Drugs 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000002140 halogenating effect Effects 0.000 description 2
- WRZCAWKMTLRWPR-VSODYHHCSA-N lorcaserin hydrochloride hemihydrate Chemical compound O.Cl.Cl.C[C@H]1CNCCC2=CC=C(Cl)C=C12.C[C@H]1CNCCC2=CC=C(Cl)C=C12 WRZCAWKMTLRWPR-VSODYHHCSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 description 2
- HZFRKZWBVUJYDA-UHFFFAOYSA-N 2-(4-chlorophenyl)ethanol Chemical compound OCCC1=CC=C(Cl)C=C1 HZFRKZWBVUJYDA-UHFFFAOYSA-N 0.000 description 1
- OIWKPVLNEDEDPC-UHFFFAOYSA-N 2-(4-chlorophenyl)ethyl 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)OCCC1=CC=C(Cl)C=C1 OIWKPVLNEDEDPC-UHFFFAOYSA-N 0.000 description 1
- 229960000549 4-dimethylaminophenol Drugs 0.000 description 1
- 208000031226 Hyperlipidaemia Diseases 0.000 description 1
- 206010020772 Hypertension Diseases 0.000 description 1
- PHSPJQZRQAJPPF-UHFFFAOYSA-N N-alpha-Methylhistamine Chemical compound CNCCC1=CN=CN1 PHSPJQZRQAJPPF-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 208000001072 type 2 diabetes mellitus Diseases 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
本发明涉及一种1‑[2‑(4‑氯苯基)‑乙基氨基]‑2‑丙醇的合成方法,具体包括,以对氯苯乙醇为起始物料,与磺酸酯化试剂反应得到其磺酸活性酯,该酯再与碱金属溴化物反应得到4‑氯苯基乙基溴,再与异丙醇胺反应得到终产品。此工艺过程原料廉价易得,收率高、三废少、成本低、操作简单、安全性好,适合工业化生产要求。
Description
技术领域
本发明属于化学合成技术领域,具体涉及减肥药氯卡色林中间体1-[2-(4-氯苯基)-乙基氨基]-2-丙醇的制备方法。
背景技术
氯卡色林,化学名(R)-8-氯-1-甲基-2,3,4,5-四氢-1H-3-苯并氮杂卓盐酸盐半水合物,cas:856681-05-5,2012年经美国FDA批准上市,用于用于成人体质指数(BMI)≥27的肥胖或超重者,并且患者至少有一项与体重相关的疾病(如高血压、2型糖尿病或高脂血症)。
1-[2-(4-氯苯基)-乙基氨基]-2-丙醇(1),cas:847063-13-2,为合成氯卡色林所需的关键中间体,文献报道其合成方法是:对氯苯乙醇与卤代试剂反应,得到对氯卤乙烷,再与异丙醇胺反应得到产品。卤代试剂主要有氯化亚砜、三溴化磷、溴化氢等,反应式如下。
此类卤代试剂都有较强酸性,对反应设备腐蚀性大,而且反应过程中有大量酸性尾气产生,反应结束后产生大量酸性废液,三废多,环保压力大。
发明内容
本发明旨在针对现有技术的不足,提供了一种1-[2-(4-氯苯基)-乙基氨基]-2-丙醇的制备方法,反应条件温和、收率高、三废少,反应路线如下:
步骤一:对氯苯乙醇与磺酸酯化试剂进行反应,反应结束后,经洗涤蒸馏后得到中间体2。磺酸酯化试剂包括甲磺酰氯、甲磺酸酐、苯甲磺酰氯、苯甲磺酸酐、对甲苯磺酰氯、对甲苯磺酸酐中的一种或多种,优选对甲苯磺酰氯;对氯苯乙醇与磺酸酯化试剂的比例为1:1.05~1:5,优选1:1.1~1:1.2。
步骤二:中间体2溶于极性非质子性溶剂中,加入碱金属溴化物,30-100℃反应,反应完全后,减压回收溶剂,水洗,得到中间体3。所述的极性非质子性溶剂包括丙酮、丁酮、乙腈、DMF、DMSO中的一种或多种,优选丙酮;中间体2与极性非质子性溶剂的质量体积比为1:2~1:10,优选1:3~5;碱金属溴化物包括溴化锂、溴化钠、溴化钾中的一种或多种,优选溴化锂。
步骤三:中间体3与异丙醇胺反应得到目标产物1。
本发明公开的1-[2-(4-氯苯基)-乙基氨基]-2-丙醇的制备方法,原料廉价易得,工艺过程收率高、三废少、成本低、操作简单、安全性好,适合工业化生产要求。
具体实施方式
下面结合具体实施例对本发明作进一步详细说明,但并不限制本发明的范围,凡基于本发明上述内容所实现的技术均属于本发明的范围。
实施例1
反应瓶中加入二氯甲烷(100ml)、对氯苯乙醇(15.7g,0.1mol)、三乙胺(11.1g,0.11mol)、DMAP(0.6g,0.005mol)和对甲苯磺酰氯(21.0g,0.11mol),40~50℃反应5~6h;将反应液降温至室温,依次用5%柠檬酸水溶液、5%碳酸氢钠溶液、水洗涤,有机相经无水硫酸钠干燥后过滤,滤液减压回收二氯甲烷,得到淡黄色油状物2-(4-氯苯基)对甲苯磺酸乙酯,收率95%。
实施例2
反应瓶中加入丙酮(60mL)、2-(4-氯苯基)对甲苯磺酸乙酯(15.5g,0.05mol)、溴化锂(6.5g,0.075mol),加热至回流,反应5~6h;将反应液降至室温,减压回收丙酮,向残余物中加入甲苯200mL,用150mL水分三次洗涤有机相,减压回收溶剂,得到浅黄色油状物4-氯苯基乙基溴,收率98%。
实施例3
反应瓶中加入乙腈(60mL)、2-(4-氯苯基)对甲苯磺酸乙酯(15.5g,0.05mol)、溴化锂(6.5g,0.075mol),加热至回流,反应5~6h;将反应液降至室温,减压回收乙腈,向残余物中加入甲苯200mL,用150mL水分三次洗涤有机相,减压回收溶剂,得到浅黄色色油状物4-氯苯基乙基溴,收率97%。
实施例4
反应瓶中加入丁酮(60mL)、2-(4-氯苯基)对甲苯磺酸乙酯(15.5g,0.05mol)、溴化锂(6.5g,0.075mol),加热至回流,反应5~6h;将反应液降至室温,减压回收丁酮,向残余物中加入甲苯200mL,用150mL水分三次洗涤有机相,减压回收溶剂,得到浅黄色色油状物4-氯苯基乙基溴,收率96%。
实施例5
反应瓶中加入4-氯苯基乙基溴(22g,0.1mol),搅拌升温至90~100℃,向其中滴加异丙醇胺(37.5g,0.5mol),滴毕,90~100℃反应2h。将反应液冷却至室温,向其中加水100ml,搅拌,过滤,得类白色固体1-[2-(4-氯苯基)-乙基氨基]-2-丙醇,50℃鼓风干燥,收率88%。
Claims (4)
2.根据权利要求1所述的方法,其特征在于:步骤一中所述的磺酸酯化试剂包括甲磺酰氯、甲磺酸酐、苯甲磺酰氯、苯甲磺酸酐、对甲苯磺酰氯、对甲苯磺酸酐中的一种或多种。
3.根据权利要求1所述的方法,其特征在于:步骤二中所述的极性非质子性溶剂包括丙酮、丁酮、乙腈、DMF、DMSO中的一种或多种。
4.根据权利要求1所述的方法,其特征在于:步骤二中所述的碱金属溴化物包括溴化锂、溴化钠、溴化钾中的一种或多种。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211282546.1A CN115784911A (zh) | 2022-10-19 | 2022-10-19 | 一种1-[2-(4-氯苯基)-乙基氨基]-2-丙醇的合成方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211282546.1A CN115784911A (zh) | 2022-10-19 | 2022-10-19 | 一种1-[2-(4-氯苯基)-乙基氨基]-2-丙醇的合成方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN115784911A true CN115784911A (zh) | 2023-03-14 |
Family
ID=85433254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202211282546.1A Pending CN115784911A (zh) | 2022-10-19 | 2022-10-19 | 一种1-[2-(4-氯苯基)-乙基氨基]-2-丙醇的合成方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN115784911A (zh) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1233180A (zh) * | 1996-08-16 | 1999-10-27 | 伊莱利利公司 | 感冒或过敏性鼻炎的治疗 |
CN1253547A (zh) * | 1997-03-31 | 2000-05-17 | 卫材株式会社 | 1,4-取代环胺衍生物 |
CN101274911A (zh) * | 2003-06-17 | 2008-10-01 | 艾尼纳制药公司 | 用于治疗5HT<sub>2c</sub>受体相关病症的苯并氮杂䓬衍生物 |
CN102015591A (zh) * | 2008-03-04 | 2011-04-13 | 艾尼纳制药公司 | 制备与5-ht2c激动剂(r)-8-氯-1-甲基-2,3,4,5-四氢-1h-3-苯并氮杂䓬相关的中间体的方法 |
CN102648170A (zh) * | 2009-06-18 | 2012-08-22 | 艾尼纳制药公司 | 制备5-ht2c受体激动剂的方法 |
US20120283431A1 (en) * | 2006-04-03 | 2012-11-08 | Ulrich Weigl | Processes for the preparation of 8-chloro-1-methyl-2,3,4,5-tetrahydro-1h-3-benzazepine and intermediates related thereto |
CN111018678A (zh) * | 2019-12-10 | 2020-04-17 | 山东省药学科学院 | 一种高纯度3-苯氧基溴丙烷的制备方法 |
US20200317627A1 (en) * | 2019-04-05 | 2020-10-08 | Trustees Of Boston College | Catalytic systems for stereoselective synthesis of chiral amines by enantiodivergent radical c-h amination |
CN112358406A (zh) * | 2020-10-28 | 2021-02-12 | 山东省药学科学院 | 一种氯卡色林中间体的制备方法 |
-
2022
- 2022-10-19 CN CN202211282546.1A patent/CN115784911A/zh active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1233180A (zh) * | 1996-08-16 | 1999-10-27 | 伊莱利利公司 | 感冒或过敏性鼻炎的治疗 |
CN1253547A (zh) * | 1997-03-31 | 2000-05-17 | 卫材株式会社 | 1,4-取代环胺衍生物 |
CN101274911A (zh) * | 2003-06-17 | 2008-10-01 | 艾尼纳制药公司 | 用于治疗5HT<sub>2c</sub>受体相关病症的苯并氮杂䓬衍生物 |
US20120283431A1 (en) * | 2006-04-03 | 2012-11-08 | Ulrich Weigl | Processes for the preparation of 8-chloro-1-methyl-2,3,4,5-tetrahydro-1h-3-benzazepine and intermediates related thereto |
CN102015591A (zh) * | 2008-03-04 | 2011-04-13 | 艾尼纳制药公司 | 制备与5-ht2c激动剂(r)-8-氯-1-甲基-2,3,4,5-四氢-1h-3-苯并氮杂䓬相关的中间体的方法 |
CN102648170A (zh) * | 2009-06-18 | 2012-08-22 | 艾尼纳制药公司 | 制备5-ht2c受体激动剂的方法 |
US20200317627A1 (en) * | 2019-04-05 | 2020-10-08 | Trustees Of Boston College | Catalytic systems for stereoselective synthesis of chiral amines by enantiodivergent radical c-h amination |
CN111018678A (zh) * | 2019-12-10 | 2020-04-17 | 山东省药学科学院 | 一种高纯度3-苯氧基溴丙烷的制备方法 |
CN112358406A (zh) * | 2020-10-28 | 2021-02-12 | 山东省药学科学院 | 一种氯卡色林中间体的制备方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
PL206482B1 (pl) | Sposób wytwarzania pochodnych 4-trifluorometylosulfinylopirazolu | |
CN107857743B (zh) | 一种制备盐酸罗沙替丁醋酸酯及中间体的方法 | |
KR101777474B1 (ko) | 1,3-프로프-1-엔 설톤의 제조방법 | |
KR20050056908A (ko) | 3-히드록시-엔,1,6-트리알킬-4-옥소-1,4-디히드로피리딘-2-카르복스아미드의 제조방법 | |
CN113149873A (zh) | 一种三氟甲基亚磺酰氯的制备方法 | |
CN115784911A (zh) | 一种1-[2-(4-氯苯基)-乙基氨基]-2-丙醇的合成方法 | |
KR20190046126A (ko) | 아코티아미드의 개선된 제조방법 | |
JP3337728B2 (ja) | 2‐アセチルベンゾ[b]チオフェンの製造方法 | |
US20010012900A1 (en) | 3-(1-hydroxy-pentylidene)-5-nitro-3H-benzofuran-2-one a process for the preparation thereof and the use thereof | |
US7109353B2 (en) | Process for preparing 5,6-dihydro-4-(S)-(ethylamino)-6-(S) methyl-4H-thieno[2,3b]thiopyran-2-sulphonamide-7,7-dioxide HCl | |
KR101894091B1 (ko) | 크로마논 유도체의 신규한 제조방법 | |
US20100063292A1 (en) | Process for the preparation of trifluoroethoxytoluenes. | |
CN112457272B (zh) | (3-甲氧基-1,2,4-噻二唑-5-氨基)甲酸苯酯的制备方法 | |
CN115850140B (zh) | 对(二甲锍基)苯磺酸内盐及其制备方法和应用 | |
CN114276280B (zh) | 一种手性苯丁胺醇磺酰胺类化合物的制备方法、制备其的中间体及制备方法 | |
CN115925588A (zh) | 一种脂肪族亚磺酸钠盐的制备方法 | |
CN114144407B (zh) | 环状二磺酸酯化合物的制造方法 | |
JPH0272150A (ja) | スルホンアミド誘導体 | |
EP1841774A1 (en) | PROCESS FOR PREPARING 5,6-DIHYDRO-4-(S)-(ETHYLAMINO)-6-(S) METHYL-4H-THIENOÝ2,3b¨THIOPYRAN-2-SULPHONAMIDE-7,7-DIOXIDE HCI | |
JP4508377B2 (ja) | スルホニル化合物の製造方法 | |
CN115925589A (zh) | 一种脂肪族亚磺酸钙盐及其制备方法 | |
JPH06737B2 (ja) | アルキル―〔3クロロフェニル〕―スルホンの製造方法 | |
CN116621818A (zh) | 一种丙环唑的合成方法 | |
CN117486800A (zh) | 氟虫腈中间体的合成方法 | |
US4978796A (en) | N-alkylpyrrolidone solvents for preparation of aromatic thiols |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |