CN113402358A - 环丙基溴的一种新合成方法 - Google Patents
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- 238000001308 synthesis method Methods 0.000 title claims description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- YXHKONLOYHBTNS-UHFFFAOYSA-N Diazomethane Chemical compound C=[N+]=[N-] YXHKONLOYHBTNS-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 9
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- 238000000034 method Methods 0.000 claims abstract description 5
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- 239000003795 chemical substances by application Substances 0.000 claims description 4
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 claims description 2
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 claims description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
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- 239000007810 chemical reaction solvent Substances 0.000 claims description 2
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- RFLFDJSIZCCYIP-UHFFFAOYSA-L palladium(2+);sulfate Chemical compound [Pd+2].[O-]S([O-])(=O)=O RFLFDJSIZCCYIP-UHFFFAOYSA-L 0.000 claims 1
- GPNDARIEYHPYAY-UHFFFAOYSA-N palladium(II) nitrate Inorganic materials [Pd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O GPNDARIEYHPYAY-UHFFFAOYSA-N 0.000 claims 1
- 229910000364 palladium(II) sulfate Inorganic materials 0.000 claims 1
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- 230000002194 synthesizing effect Effects 0.000 abstract description 3
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- 239000006227 byproduct Substances 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
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- MYSWGUAQZAJSOK-UHFFFAOYSA-N ciprofloxacin Chemical compound C12=CC(N3CCNCC3)=C(F)C=C2C(=O)C(C(=O)O)=CN1C1CC1 MYSWGUAQZAJSOK-UHFFFAOYSA-N 0.000 description 2
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- UKWHYYKOEPRTIC-UHFFFAOYSA-N mercury(ii) oxide Chemical compound [Hg]=O UKWHYYKOEPRTIC-UHFFFAOYSA-N 0.000 description 2
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- SPFYMRJSYKOXGV-UHFFFAOYSA-N Baytril Chemical compound C1CN(CC)CCN1C(C(=C1)F)=CC2=C1C(=O)C(C(O)=O)=CN2C1CC1 SPFYMRJSYKOXGV-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 229960003405 ciprofloxacin Drugs 0.000 description 1
- YMGUBTXCNDTFJI-UHFFFAOYSA-N cyclopropanecarboxylic acid Chemical compound OC(=O)C1CC1 YMGUBTXCNDTFJI-UHFFFAOYSA-N 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 238000006114 decarboxylation reaction Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
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- 229960000740 enrofloxacin Drugs 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229960004954 sparfloxacin Drugs 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/35—Preparation of halogenated hydrocarbons by reactions not affecting the number of carbon or of halogen atoms in the reaction
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/361—Preparation of halogenated hydrocarbons by reactions involving a decrease in the number of carbon atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
- C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
- C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D231/16—Halogen atoms or nitro radicals
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F3/00—Compounds containing elements of Groups 2 or 12 of the Periodic Table
- C07F3/02—Magnesium compounds
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/02—Systems containing only non-condensed rings with a three-membered ring
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Abstract
本发明公开了一种合成环丙基溴的新方法,以二溴乙烯为原料,与重氮甲烷在Pd(oAc)2催化剂作用下,在溶剂中进行脱氮环化反应,再经过格氏化反应,水解脱溴制得到环丙基溴粗品,再经过滤分层、常压精馏得到含量99.5%以上的纯品,收率85%以上。该合成路线,副产少,反应条件温和,收率高,环境友好,具有较好的工业化前景。
Description
技术领域
本发明涉及一种环丙基溴的合成新方法,属于医药中间体合成技术领域。
背景技术
环丙基溴主要应用于合成环丙沙星、恩罗沙星和斯帕沙星等多种含环丙基的药物,目前工业中主要的合成方法是环丙甲酸在***催化下,在四氯乙烷中与溴素进行脱羧溴代反应制得,该方法收率偏低,生产过程中会产生大量含汞废水,对环境污染严重。现有报道以溴乙烯为原料,通过钯催化,进行脱氮环化反应制备环丙基溴,该方法虽然避免了汞的使用,减轻了对环境的污染,但是主要原料溴乙烯沸点很低,且属于易燃、易爆化学品,对生产安全极为不利,严重影响了其在工业化领域的应用。
发明内容
针对以上问题,本发明提供一种改进的环丙基溴合成路线,采用二溴乙烯为原料与重氮甲烷在钯催化下进行脱氮成环,再经格氏化反应,水解脱溴制备环丙基溴,具体机理及步骤如下:
1)第一步,以二溴乙烯为起始原料,在一定量的溶剂中,以一定的摩尔比,一定的反应温度下,在钯催化剂作用下与重氮甲烷反应,得到二溴代环丙烷粗品。
2)第二步,将二溴代环丙烷粗品与Mg进行格氏化反应,在经过酸洗、过滤、分层、常压蒸馏得到环丙基溴成品。
进一步地,在上述方案中,第一步中,所述反应溶剂为THF、DMF、甲苯、二甲苯、氯苯、二氯苯、乙腈、乙醇、***、乙酸乙酯中的至少一种;
进一步地,在上述方案中,第一步中,所述溴乙烯和重氮甲烷、钯催化剂的摩尔比为1:1~1.5:0.005~0.01;
进一步地,在上述方案中,第一步中,所述反应温度为-15~120℃,反应时间为5~15h;
进一步地,在上述方案中,第二步中,所述反的二溴代环丙烷与Mg的摩尔比为1:1.0~1.5;
进一步地,在上述方案中,第二步中,所述反应温度为-10~80℃,反应时间为4~20h;
进一步地,在上述方案中,第二步中,所述水解剂为盐酸、硫酸、磷酸中、氢溴酸、硝酸中至少一种;
进一步地,在上述方案中,第二步中,所述水解剂浓度为1~10%。
发明的有益效果:
1)避免了危险化学品溴乙烯和***的使用,几乎无废水产生,环境友好,生产安全性高,具有很高的经济意义和社会意义。
2)此合成路线,反应条件温和,产品收率高,纯度高,质量稳定。
具体实施实例:
【实施例1】环丙基溴的合成
第一步,500ml四口瓶中,氮气保护下,先加入200mlTHF/***混合液(质量比为1:1),降温到-15℃,再加入12.6g(0.30mol)重氮甲烷和0.67g(0.003mol)Pd(oAc)2,开启搅拌,缓慢滴加二溴乙烯46.45g(0.25mol),反应1.5h后升温回流,保温反应10h~12h,TLC检测反应结束后降温到-5℃。
第二步,在氮气保护下,在另外一个500ml四口瓶中加入120mlTHF和6g(0.25mol)Mg格氏引发后,-5~0℃下滴加第一步中的反应液,反应1h,然后升温到40℃反应6h,然后降温到室温,将100g浓度1%的稀盐酸缓慢滴加到反应母液中,搅拌0.5h,然后静置分液,有机相经常压蒸馏得到产品环丙基溴27.2g;纯度99.8%,收率90%。
【实施例2】环丙基溴的合成
第一步,250ml四口瓶中,氮气保护下,先加入180mlTHF,降温到-10℃,再加入14.7g(0.35mol)重氮甲烷和0.89g(0.004mol)Pd(oAc)2,开启搅拌,缓慢滴加二溴乙烯65.0g(0.30mol),反应1h后升温回流,保温反应10h~12h,TLC检测反应结束降温到-10℃。
第二步,氮气保护下,在另外一个500ml四口瓶中加入120mlTHF和9.6g(0.4mol)Mg,格氏引发后,0~5℃下滴加第一步中的反应液,反应3h,然后升温到60℃反应6h,然后降温到室温,将100g浓度1%的稀硫酸缓慢滴加到反应母液中,搅拌0.5h,然后静置分液,有机相经常压蒸馏得到产品环丙基溴31.95g;纯度99.6%,收率88%。
【实施例3】环丙基溴的合成
第一步,250ml四口瓶中,氮气保护下,先加入150ml甲苯,降温到-5℃,再加入12.6.g(0.30mol)重氮甲烷和0.67g(0.003mol)Pd(oAc)2,开启搅拌,缓慢滴加液态二溴乙烯46.47g(0.25mol),反应2h后升温回流,保温反应4h~6h,TLC检测反应结束降温到-5℃。
第二步,在氮气保护下,在另外一个500ml四口瓶中加入100mlTHF和6g(0.25mol)Mg格氏引发后,-5℃下滴加第一步中的反应液,反应2h,然后升温到60℃反应4h,然后降温到室温,将100g浓度1%的稀盐酸缓慢滴加到反应母液中,搅拌0.5h,然后静置分液,有机相经常压蒸馏得到产品环丙基溴25.7g;纯度99.7%,收率85%。
Claims (9)
1.一种环丙基溴合成新方法,其特征在于包括以下两个合成步骤:
1)以二溴乙烯为起始原料,在一定量的溶剂中,以一定的摩尔比,一定的反应温度下,在钯催化剂作用下与重氮甲烷反应,得到二溴代环丙烷;
2)将二溴代环丙烷粗品与Mg进行格氏化反应,在经过酸洗、过滤、分层、常压蒸馏得到环丙基溴成品。
2.根据权利要求1所述一种环丙基溴合成新方法,其特征在于步骤1)所述反应溶剂为THF、DMF、甲苯、二甲苯、氯苯、二氯苯、乙腈、乙醇、***、乙酸乙酯中的至少一种。
3.根据权利要求1所述一种环丙基溴合成新方法,其特征在于步骤1)所述二溴乙烯和重氮甲烷、钯催化剂的摩尔比为1:1~2.0:0.002~0.02。
4.根据权利要求1所述一种环丙基溴合成新方法,其特征在于步骤1)所述钯催化剂为Pd(oAc)2、Pd(NO3)2、PdSO4、Pdcl2、Pd(TFA)2中至少一种。
5.根据权利要求1所述一种环丙基溴合成新方法,其特征在于步骤1)所述反应温度为-15~130℃,反应时间为5~15h。
6.根据权利要求1所述一种环丙基溴合成新方法,其特征在于步骤2),所述反的二溴代环丙烷与Mg的摩尔比为1:1.0~1.5。
7.根据权利要求1所述一种环丙基溴合成新方法,其特征在于步骤2),所述反应温度为-10~80℃,反应时间为4~20h。
8.根据权利要求1所述一种环丙基溴合成新方法,其特征在于步骤2)所述水解剂为盐酸、硫酸、磷酸中、氢溴酸、硝酸中至少一种。
9.根据权利要求1所述一种环丙基溴合成新方法,其特征在于步骤2)所述水解剂浓度为1~5%。
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CN114315508A (zh) * | 2022-01-15 | 2022-04-12 | 大连双硼医药化工有限公司 | 一种合成环丙基溴的工艺方法 |
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