CN116041160A - 一种将异舍曲酮转化为舍曲酮的方法 - Google Patents
一种将异舍曲酮转化为舍曲酮的方法 Download PDFInfo
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- VGKDLMBJGBXTGI-SJCJKPOMSA-N sertraline Chemical compound C1([C@@H]2CC[C@@H](C3=CC=CC=C32)NC)=CC=C(Cl)C(Cl)=C1 VGKDLMBJGBXTGI-SJCJKPOMSA-N 0.000 title claims abstract description 51
- 229960002073 sertraline Drugs 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 23
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003054 catalyst Substances 0.000 claims abstract description 8
- 238000005406 washing Methods 0.000 claims abstract description 8
- -1 isostearyl ketone Chemical compound 0.000 claims abstract description 5
- 239000003960 organic solvent Substances 0.000 claims abstract description 5
- 238000010791 quenching Methods 0.000 claims abstract description 3
- 230000000171 quenching effect Effects 0.000 claims abstract description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 21
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 239000012043 crude product Substances 0.000 claims description 4
- PQLAYKMGZDUDLQ-UHFFFAOYSA-K aluminium bromide Chemical compound Br[Al](Br)Br PQLAYKMGZDUDLQ-UHFFFAOYSA-K 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000012452 mother liquor Substances 0.000 abstract description 12
- 150000002576 ketones Chemical class 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 19
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical compound C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 description 10
- 239000012044 organic layer Substances 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- GLQPTZAAUROJMO-UHFFFAOYSA-N 4-(3,4-dimethoxyphenyl)benzaldehyde Chemical compound C1=C(OC)C(OC)=CC=C1C1=CC=C(C=O)C=C1 GLQPTZAAUROJMO-UHFFFAOYSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000012295 chemical reaction liquid Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229960003660 sertraline hydrochloride Drugs 0.000 description 2
- JGMBHJNMQVKDMW-NSHDSACASA-N (4s)-4-(3,4-dichlorophenyl)-3,4-dihydro-2h-naphthalen-1-one Chemical compound C1=C(Cl)C(Cl)=CC=C1[C@H]1C2=CC=CC=C2C(=O)CC1 JGMBHJNMQVKDMW-NSHDSACASA-N 0.000 description 1
- WURBVZBTWMNKQT-UHFFFAOYSA-N 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-one Chemical compound C1=NC=NN1C(C(=O)C(C)(C)C)OC1=CC=C(Cl)C=C1 WURBVZBTWMNKQT-UHFFFAOYSA-N 0.000 description 1
- JGMBHJNMQVKDMW-UHFFFAOYSA-N 4-(3,4-dichlorophenyl)-3,4-dihydro-2h-naphthalen-1-one Chemical compound C1=C(Cl)C(Cl)=CC=C1C1C2=CC=CC=C2C(=O)CC1 JGMBHJNMQVKDMW-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007337 electrophilic addition reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- CCGKOQOJPYTBIH-UHFFFAOYSA-N ketene group Chemical group C=C=O CCGKOQOJPYTBIH-UHFFFAOYSA-N 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
- C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2602/00—Systems containing two condensed rings
- C07C2602/02—Systems containing two condensed rings the rings having only two atoms in common
- C07C2602/04—One of the condensed rings being a six-membered aromatic ring
- C07C2602/10—One of the condensed rings being a six-membered aromatic ring the other ring being six-membered, e.g. tetraline
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- 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
- Y02P20/584—Recycling of catalysts
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- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
本发明提供了一种将异舍曲酮转化为舍曲酮的方法,所述方法包括:将异舍曲酮纯品或异舍曲酮粗品溶于邻二氯苯中,加入催化剂进行反应;用水淬灭反应,水洗,减压除去邻二氯苯;用有机溶剂进行结晶,得到舍曲林。该工艺简单可行,通过多次转化,回收母液中的异舍曲酮的总收率达到80%以上,是回收母液的有效途径。
Description
技术领域
本发明提供了一种将异舍曲酮转化为舍曲酮的方法。该方法简单,是工业上制备舍曲酮,回收母液料的有效方法。
背景技术
舍曲酮(结构式1)是合成盐酸舍曲林(结构式3)的关键起始原料。目前市场上舍曲酮都是根据文献Sibirskii Khimicheskii Zhurnal,1993,(3),73的合成方法制备,即以1-萘酚和邻二氯苯为原料在三氯化铝的催化下缩合得到舍曲酮。该方法工艺简单,原料价格低,但会生成15%左右异舍曲林(结构式2),通过优化反应很难进一步减少该异构体。结晶除去15%的异构体,会损失掉舍曲酮,母液套用后收率一般在60%左右,仍有约40%的物料不能回收,只能作为有机废料焚烧处理,不仅增加了成本,也会导致环境污染。
发明内容
本发明是将异舍曲酮或舍曲酮和异舍曲酮混合物(异舍曲酮含量≥15%)通过催化剂作用下,转化为5.4:1的舍曲酮和异舍曲酮混合物,再经过结晶纯化,回收舍曲酮。母液再继续转化,最终将异舍曲酮转化为舍曲酮。该工艺简单可行,通过多次转化,可以回收母液中的异舍曲酮,总收率达到80%以上。
本发明提供的技术方案如下:
一种将异舍曲酮转化为舍曲酮的方法,所述方法包括:
(1)将异舍曲酮纯品或异舍曲酮粗品溶于邻二氯苯中,加入催化剂进行反应;
(2)用水淬灭反应,水洗,减压除去邻二氯苯;
(3)用有机溶剂进行结晶,得到舍曲林。
可选地,所述异舍曲酮粗品包括舍曲酮和异舍曲酮,其中的所述异舍曲酮的含量≥15%。
可选地,所述催化剂包括以下至少一项:三氯化铝、三溴化铝。
可选地,所述有机溶剂选自甲醇、丙酮。
可选地,所述邻二氯苯与所述异舍曲酮纯品或所述异舍曲酮粗品的质量比为(2-10):1。
可选地,所述催化剂与所述异舍曲酮纯品或所述异舍曲酮粗品的质量比为(0.9-2.3):1。
可选地,所述反应的反应温度为100-180℃。
可选地,所述反应的反应时间为18-24h。
按照本发明提供的方法将异舍曲酮转化为舍曲酮,所得的舍曲酮的纯度>99.5%,单杂<0.2%,可以作为制备舍曲林盐(如盐酸舍曲林)用。
从1-萘酚和邻二氯苯制备舍曲酮的反应机理分析,1-萘酚在三氯化铝的作用下,先生成互变异构体烯酮结构,该结构在三氯化铝催化下,转化为芳基正离子再对邻二氯苯进行亲电加成,由于邻二氯苯的4-位电子云密度比3-位高,因此主要反应发生在邻二氯苯的4-位上,生成舍曲酮,次要的3-位反应生成异舍曲酮。反应机理如下。
在实验过程中,我们尝试采用纯的舍曲酮和三氯化铝在邻二氯苯中反应,考察舍曲酮的稳定性,让人惊奇的是,在反应液中,我们居然发现了1-萘酚和异舍曲酮,时间足够长,达到充分平衡后,舍曲酮和异舍曲酮比例为5.6:1。这就说明1-萘酚和邻二氯苯在三氯化铝作用下生成舍曲酮是一个可逆反应。因此我们就将舍曲酮和异舍曲酮混合物(1.2:1)用三氯化铝进行催化转化,结果发现,随着时间延长,异舍曲酮可以转化为舍曲酮,最终达到平衡的比例为5.4:1。
具体实施方式
实施例1:
异舍曲酮2.91克加入9克邻二氯苯和3.5克三氯化铝,升温至120℃,反应18小时,取样检测,反应液中舍曲酮/异舍曲酮5.4:1。混合物加入20毫升水中淬灭,分出有机层,水洗两次,减压浓缩至干。25毫升甲醇溶解结晶,得到2.0克舍曲酮(含异舍曲酮3.6%),收率68%。
实施例2
取回收的舍曲酮母液浓缩物(舍曲酮/异舍曲酮=1.2:1)80克,加入240克邻二氯苯和77克三氯化铝。混合物升温至100℃,反应24小时。取样检测,舍曲酮和异舍曲酮比例为5.4:1,停止反应。降至室温,混合物缓慢加入500克水中,分出有机层,水洗两次。混合物减压蒸馏,残留物用甲醇结晶四次。得到类白色固体26.4克,纯度99.8%,收率33%。
实施例3
取回收的舍曲酮母液浓缩物(舍曲酮/异舍曲酮=2:1)80克,加入160克邻二氯苯和77克三氯化铝。混合物升温至160℃,反应8小时。取样检测,舍曲酮和异舍曲酮比例为5.3:1,停止反应。降至室温,混合物缓慢加入500克水中,分出有机层,水洗两次。混合物减压蒸馏,残留物用甲醇结晶四次。得到类白色固体24克,纯度99.6%,收率30%。
实施例4
取回收的舍曲酮母液浓缩物(舍曲酮/异舍曲酮=4:1)80克,加入800克邻二氯苯和110克三氯化铝。混合物升温至120℃,反应16小时。取样检测,舍曲酮和异舍曲酮比例为5.3:1,停止反应。降至室温,混合物缓慢加入500克水中,分出有机层,水洗两次。混合物减压蒸馏,残留物用甲醇结晶四次。得到类白色固体24.8克,纯度99.7%,收率31%。
实施例5
取回收的舍曲酮母液浓缩物(舍曲酮/异舍曲酮=85:15)80克,加入400克邻二氯苯和220克三溴化铝。混合物升温至120℃,反应8小时。取样检测,舍曲酮和异舍曲酮比例为5.3:1,停止反应。降至室温,混合物缓慢加入500克水中,分出有机层,水洗两次。混合物减压蒸馏,残留物用甲醇结晶四次。得到类白色固体24克,纯度99.7%,收率30%。
实施例6
取回收的舍曲酮母液浓缩物(舍曲酮/异舍曲酮=1.2:1)80克,加入400克邻二氯苯和220克三氯化铝。混合物升温至180℃,反应8小时。取样检测,舍曲酮和异舍曲酮比例为5.2:1,停止反应。降至室温,混合物缓慢加入500克水中,分出有机层,水洗两次。混合物减压蒸馏,残留物用丙酮结晶2次。得到类白色固体22.4克,纯度99.6%,收率28%。
Claims (8)
1.一种将异舍曲酮转化为舍曲酮的方法,其特征在于,所述方法包括:
(1)将异舍曲酮纯品或异舍曲酮粗品溶于邻二氯苯中,加入催化剂进行反应;
(2)用水淬灭反应,水洗,减压除去邻二氯苯;
(3)用有机溶剂进行结晶,得到舍曲林。
2.根据权利要求1所述的方法,其特征在于,所述异舍曲酮粗品包括舍曲酮和异舍曲酮,其中的所述异舍曲酮的含量≥15%。
3.根据权利要求1所述的方法,其特征在于,所述催化剂包括以下至少一项:三氯化铝、三溴化铝。
4.根据权利要求1所述的方法,其特征在于,所述有机溶剂选自甲醇、丙酮。
5.根据权利要求1所述的方法,其特征在于,所述邻二氯苯与所述异舍曲酮纯品或所述异舍曲酮粗品的质量比为(2-10):1。
6.根据权利要求1所述的方法,其特征在于,所述催化剂与所述异舍曲酮纯品或所述异舍曲酮粗品的质量比为(0.9-2.3):1。
7.根据权利要求1所述的方法,其特征在于,所述反应的反应温度为100-180℃。
8.根据权利要求1所述的方法,其特征在于,所述反应的反应时间为18-24h。
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5019655A (en) * | 1988-06-08 | 1991-05-28 | Delalande S.A. | Method of preparing 4-dichlorophenyl-1-tetralones |
WO1998015516A1 (en) * | 1996-10-09 | 1998-04-16 | EGIS Gyógyszergyár Rt. | Process for the preparation of a pharmaceutical intermediate |
CN103524354A (zh) * | 2013-10-23 | 2014-01-22 | 山东鲁药制药有限公司 | 一种盐酸舍曲林的制备方法 |
CN104876812A (zh) * | 2015-05-20 | 2015-09-02 | 浙江华海药业股份有限公司 | 制备盐酸舍曲林中间体及杂质的方法 |
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- 2021-10-28 CN CN202111263090.XA patent/CN116041160A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5019655A (en) * | 1988-06-08 | 1991-05-28 | Delalande S.A. | Method of preparing 4-dichlorophenyl-1-tetralones |
WO1998015516A1 (en) * | 1996-10-09 | 1998-04-16 | EGIS Gyógyszergyár Rt. | Process for the preparation of a pharmaceutical intermediate |
CN103524354A (zh) * | 2013-10-23 | 2014-01-22 | 山东鲁药制药有限公司 | 一种盐酸舍曲林的制备方法 |
CN104876812A (zh) * | 2015-05-20 | 2015-09-02 | 浙江华海药业股份有限公司 | 制备盐酸舍曲林中间体及杂质的方法 |
Non-Patent Citations (1)
Title |
---|
REPINSKAYA, I. B.等: "Condensation of 1-naphthol with ortho-dichlorobenzene in the presence of aluminum halides", SIBIRSKII KHIMICHESKII ZHURNAL, no. 3, 31 December 1993 (1993-12-31), pages 74 * |
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