CN116196909A - 一种硅胶@聚苯胺@多糖衍生物核壳csp填料及其制备方法与应用 - Google Patents
一种硅胶@聚苯胺@多糖衍生物核壳csp填料及其制备方法与应用 Download PDFInfo
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- CN116196909A CN116196909A CN202310013779.XA CN202310013779A CN116196909A CN 116196909 A CN116196909 A CN 116196909A CN 202310013779 A CN202310013779 A CN 202310013779A CN 116196909 A CN116196909 A CN 116196909A
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- silica gel
- polyaniline
- csp
- polysaccharide derivative
- compound
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- 229920000767 polyaniline Polymers 0.000 title claims abstract description 70
- 229920001282 polysaccharide Polymers 0.000 title claims abstract description 70
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- 238000002360 preparation method Methods 0.000 title claims abstract description 17
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 34
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- MIOPJNTWMNEORI-GMSGAONNSA-N (S)-camphorsulfonic acid Chemical compound C1C[C@@]2(CS(O)(=O)=O)C(=O)C[C@@H]1C2(C)C MIOPJNTWMNEORI-GMSGAONNSA-N 0.000 claims abstract description 17
- MIOPJNTWMNEORI-XVKPBYJWSA-N (R)-camphorsulfonic acid Chemical compound C1C[C@]2(CS(O)(=O)=O)C(=O)C[C@H]1C2(C)C MIOPJNTWMNEORI-XVKPBYJWSA-N 0.000 claims abstract description 15
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- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 12
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 12
- 238000001291 vacuum drying Methods 0.000 claims description 11
- 239000012065 filter cake Substances 0.000 claims description 9
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 8
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- DZSGDHNHQAJZCO-UHFFFAOYSA-N 1-isocyanato-3,5-dimethylbenzene Chemical compound CC1=CC(C)=CC(N=C=O)=C1 DZSGDHNHQAJZCO-UHFFFAOYSA-N 0.000 claims description 5
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- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 20
- YURQMHCZHLMHIB-UHFFFAOYSA-N 6-methoxy-2-phenyl-2,3-dihydrochromen-4-one Chemical compound C1C(=O)C2=CC(OC)=CC=C2OC1C1=CC=CC=C1 YURQMHCZHLMHIB-UHFFFAOYSA-N 0.000 description 10
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- HBAQYPYDRFILMT-UHFFFAOYSA-N 8-[3-(1-cyclopropylpyrazol-4-yl)-1H-pyrazolo[4,3-d]pyrimidin-5-yl]-3-methyl-3,8-diazabicyclo[3.2.1]octan-2-one Chemical class C1(CC1)N1N=CC(=C1)C1=NNC2=C1N=C(N=C2)N1C2C(N(CC1CC2)C)=O HBAQYPYDRFILMT-UHFFFAOYSA-N 0.000 description 2
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Abstract
本发明公开了一种硅胶@聚苯胺@多糖衍生物核壳CSP填料及其制备方法与应用。运用一锅法,将苯胺经L/D‑樟脑磺酸诱导、掺杂,原位生成L/D‑聚苯胺,包覆于硅胶表面,之后将多糖衍生物涂覆到具有上述结构的化合物表面,制备得到硅胶@L/D‑聚苯胺@多糖衍生物核壳CSP,该填料在正相色谱模式下具有稳定的手性识别能力,能满足反式氧化吡烯、2,2,2‑三氟‑1‑(9‑蒽基)乙醇等手性化合物对映体分离分析的需要。
Description
技术领域
本发明涉及填料制备工艺技术领域,尤其涉及一种硅胶@聚苯胺@多糖衍生物核壳CSP填料及其制备方法和应用。
背景技术
手性广泛存在于自然界中,如蛋白质、多糖、核酸和酶等,几乎全是手性的,它们具有重要生理功能。高效液相色谱手性固定相法(chiral stationary phase,CSP)由于高效方便,既可以用于分离分析,又可用于对映体的制备和半制备,成为手性药物对映体分离中最为引人注目的方法。手性固定相一般是由载体和手性选择体两部分组成,按照手性选择体在载体上的固定方式可以分为键和型和涂覆型两类。
立体规整的聚合物是目前应用最多的CSP,包括合成的聚合物,如聚甲基丙烯酰胺、聚乙炔等,以及多糖衍生物等。多糖是具有光学活性的聚合物,它本身表现出一定的手性识别能力,通过化学衍生,可以增加手性作用点的数目,提高手性识别能力,因而其衍生物是具有实际应用价值的固定相,具有广泛的手性识别拆分能力。Okamoto等合成了大量多糖类衍生物,制备了有很好手性拆分能力的多种固定相,与日本大赛璐公司合作开发并商业化,是目前使用的最多的手性色谱柱。此外,螺旋聚合物具有规整的二级结构,因此常常具有很强光学活性,在手性识别/拆分、手性催化、手性控释等手性技术领域,手性螺旋聚合物有着诱人的应用前景。以单一手性樟脑磺酸为掺杂剂和诱导剂合成所得的聚苯胺(polyaniline,PANI)具有一定的手性识别能力;且具有一定光学活性的手性聚苯胺能够提供一个优良的载体环境,提高了其本身的稳定性,目前已广泛应用于光、电、磁、光催化等复合型材料改性方面。
发明内容
针对现有技术的不足,本发明提供了一种硅胶@聚苯胺@多糖衍生物核壳CSP填料及其制备方法和应用。
本发明的主要设计思路为:利用具有一定手性能力的聚苯胺对色谱球形硅胶表面进行结构改造,并将具有手性识别能力的多糖衍生物与改造后的硅胶-聚苯胺相结合,制得相应的硅胶@聚苯胺@多糖衍生物核壳CSP,两种手性聚合物协同作用以提高手性识别能力。
较为具体地,本发明第一方面提供了一种硅胶@聚苯胺@多糖衍生物核壳CSP填料,结构式如式I所示;
作为本发明第一方面产品的进一步优化方案,所述填料通过一锅法,将苯胺经L/D-樟脑磺酸诱导、掺杂原位生成L/D-聚苯胺,包覆于硅胶表面,之后将多糖衍生物涂覆到具有上述结构的化合物表面制备而成。
较为具体地,本发明第二方面提供了硅胶@聚苯胺@多糖衍生物核壳CSP填料的制备方法,包括以下步骤:
1)将硅胶与苯胺按照质量比(2:1~6:1)溶于盐酸-水溶液中,再将L/D-樟脑磺酸与苯胺按照摩尔比(1:1~3:1)加入上述溶液体系中,于3℃磁力搅拌反应20分钟,之后向上述溶液体系中加入已溶于盐酸-水溶液的过硫酸铵溶液(过硫酸铵与苯胺的摩尔比为1:2),于3℃磁力搅拌反应24h,得到具有式II所示的结构化合物;待反应完成后,分别用去离子水和无水乙醇交替洗涤至滤液无色,于70℃真空干燥得到化合物-1,由L-樟脑磺酸诱导产生的为化合物L-1,由D-樟脑磺酸诱导产生的为化合物D-1。所述化合物-1如式II所示:
2)取多糖衍生物如α-纤维素于圆底烧瓶中100℃真空干燥4h,冷却至室温。在氮气保护下,依次加入无水吡啶和3,5-二甲基苯基异氰酸酯,于90℃下回流反应24h,得到亮棕色溶液。冷却后将反应液逐滴加入至甲醇中沉淀,静置过夜,之后减压抽滤,将滤饼溶于二氯甲烷中,再逐滴将溶液滴入甲醇中进行二次沉淀,减压抽滤并用大量甲醇洗涤滤饼至无吡啶味,60℃真空干燥得到化合物-2,由L-樟脑磺酸诱导产生的为化合物L-2,由D-樟脑磺酸诱导产生的为化合物D-2。所述化合物-2如式III所示
将化合物-2超声溶于四氢呋喃,逐滴滴加入已分散有化合物-1的四氢呋喃溶液体系中,之后于超声波振荡仪中超声30分钟,反应结束后,于40℃水浴锅中旋转蒸干溶剂,得到化合物-3,由L-樟脑磺酸诱导产生的为化合物L-3,由D-樟脑磺酸诱导产生的为化合物D-3。所述化合物-3如式IV所示:
(4)将式Ⅳ所示的结构的化合物湿法过筛,60℃真空干燥4h,得到硅胶@聚苯胺@多糖衍生物核壳CSP填料,由L-樟脑磺酸诱导产生的为硅胶@L-聚苯胺@多糖衍生物核壳CSP填料,由D-樟脑磺酸诱导产生的为硅胶@D-聚苯胺@多糖衍生物核壳CSP填料。
作为第二方面方法的进一步优化方案,本发明具体限定了樟脑磺酸为L-樟脑磺酸及D-樟脑磺酸。
作为第二方面方法的进一步优化方案,本发明具体限定了所述盐酸-水溶液的浓度为1mol/L。
作为第二方面方法的进一步优化方案,本发明具体限定了所有试剂均为无水试剂。
较为具体地,本发明第三方面提供了一种色谱柱,其包含有上述所述的硅胶@聚苯胺@多糖衍生物核壳CSP填料。
作为第三方面方法的进一步优化方案,本发明优选的:所述色谱柱为高效液相色谱柱。
较为具体地,本发明第四方面提供了一种上述所述的填料在手性分离拆分领域中的应用。
综上所述,本发明主要具有以下有益效果:
本发明的硅胶@聚苯胺@多糖衍生物核壳CSP填料,可对多种结构类型的手性化合物进行分离,同时具有很好的稳定性能,适合用作高效液相色谱填料,数据表明,在正相条件下能够拆分特罗格碱、安息香、反式氧化吡烯、2,2,2-三氟-1-(9-蒽基)乙醇、黄烷酮、6-甲氧基黄烷酮6种手性化合物6种手性化合物。该填料在正相色谱模式下具有稳定的手性识别能力,能满足这些手性化合物的对映体分离分析,以及生产过程中质量控制的需要。
附图说明
图1为实施例1硅胶@L-聚苯胺@多糖衍生物核壳CSP的SEM图,;
图2为实施例2硅胶@D-聚苯胺@多糖衍生物核壳CSP的SEM图;
图3为特罗格碱在实施例1制备的硅胶@L-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长214nm;
图4为特罗格碱在实施例2制备的硅胶@D-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长214nm;
图5为安息香在实施例1制备的硅胶@L-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长246nm;
图6为安息香在实施例2制备的硅胶@D-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长246nm;
图7为反式氧化吡烯在实施例1制备的硅胶@L-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长228nm;
图8为反式氧化吡烯在实施例2制备的硅胶@D-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长228nm;
图9为2,2,2-三氟-1-(9-蒽基)乙醇在实施例1制备的硅胶@L-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长254nm;
图10为2,2,2-三氟-1-(9-蒽基)乙醇在实施例2制备的硅胶@D-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长254nm;
图11为黄烷酮在实施例1制备的硅胶@L-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长216nm;
图12为黄烷酮在实施例2制备的硅胶@D-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长216nm;
图13为6-甲氧基黄烷酮在实施例1制备的硅胶@L-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长223nm;
图14为6-甲氧基黄烷酮在实施例2制备的硅胶@D-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长223nm。
图15为本发明工艺流程图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明首先是提供了一种硅胶@聚苯胺@多糖衍生物核壳CSP填料,结构式如式I所示;
接着,本发明对于上述填料的制备方法进行改进,并按照下述步骤方法获得所需要的上述目标结构的填料,具体的,包含以下步骤:
(1)将硅胶与苯胺溶于盐酸-水溶液中,再将L/D-樟脑磺酸与苯胺加入至上述溶液体系中,于3℃磁力搅拌反应20分钟,之后向上述溶液体系中加入已溶于盐酸-水溶液的过硫酸铵溶液,于3℃磁力搅拌反应24h,得到具有式II所示的结构化合物;
(2)将α-纤维素与3,5-二甲基苯基异氰酸酯,回流反应24h,冷却后将反应液逐滴加入至甲醇中沉淀,静置过夜,之后减压抽滤,将滤饼溶于二氯甲烷中,再逐滴将溶液滴入甲醇中进行二次沉淀,减压抽滤并用大量甲醇洗涤滤饼至无吡啶味,真空干燥得到具有式III所示结构的纤维素衍生物;
(3)将具有式III所示结构的纤维素衍生物涂覆于式II所示结构的化合物表面,得到式IV所示结构的化合物;
(4)将式Ⅳ所示的结构的化合物湿法过筛,真空干燥后得到硅胶@聚苯胺@多糖衍生物核壳CSP填料。
需要说明的是,本发明优选1mol/L盐酸-水溶液作为反应体系。且以色谱球形硅胶作为反应基底,本发明对所述1mol/L盐酸-水溶液在反应过程中的体积没有特殊限定,采用本领域技术人员熟知的方式即可。
作为示例,上述方法中的苯胺在色谱球形硅胶表面发生聚合反应的时间为24h,反应温度为3℃。
本案中通过以下具体的实施例来记载具体的工艺步骤
实施例1:参照附图15所示
将硅胶(3.0g)与苯胺(0.5ml,5.37mmol)溶于1mol/L盐酸-水溶液(75ml)中,再在将L-樟脑磺酸(3.74g,16.1mmol)加入上述溶液体系中,于3℃磁力搅拌反应20分钟,之后称取过硫酸铵(0.612g,2.68mmol)溶于1mol/L盐酸-水溶液,加入至上述溶液体系中,于3℃磁力搅拌反应24h,得到具有式II所示的结构化合物;待反应完成后,分别用去离子水和无水乙醇交替洗涤至滤液无色,于70℃真空干燥得到化合物L-1,所述试剂均为无水试剂。
取α-纤维素(2.0g,12.3mmol)于150ml圆底烧瓶中100℃真空干燥4h,冷却至室温。在氮气保护下,依次加入无水吡啶(80ml)和3,5-二甲基苯基异氰酸酯(7.8ml),于90℃下回流反应24h,得到亮棕色溶液。冷却后将反应液逐滴加入至无水甲醇(800ml)中沉淀,静置过夜,之后减压抽滤,将滤饼溶于无水二氯甲烷(30ml)中,再逐滴将溶液滴入无水甲醇(500ml)中进行二次沉淀,减压抽滤并用大量无水甲醇洗涤滤饼至无吡啶味,60℃真空干燥得到化合物L-2,所述试剂均为无水试剂。
称取化合物L-1(3.2g)室温下磁力搅拌使其分散于无水四氢呋喃中,另取化合物L-2(0.8g,1.3mmol)溶于无水四氢呋喃(15ml)中,然后逐滴加入到已分散有化合物L-1的无水四氢呋喃溶液中,滴加完成后,室温下超声反应30分钟。超声结束后,于40℃旋转蒸干无水四氢呋喃,得到化合物L-3。
将化合物L-3于60℃真空干燥4h,湿法过筛后得到所述的硅胶@聚苯胺@多糖衍生物核壳CSP填料。所述制备一种硅胶@L-聚苯胺@多糖衍生物核壳CSP填料。
图1为实施例1硅胶@L-聚苯胺@多糖衍生物核壳CSP的SEM图;
表1为实施例1硅胶@L-聚苯胺@多糖衍生物核壳CSP的元素分析结果,由表1、图1可知,本发明制备得到了硅胶@L-聚苯胺@多糖衍生物核壳CSP;
表1硅胶@L-聚苯胺@多糖衍生物核壳CSP元素分析结果
由表2和图3、5、7、9、11、13可知,本实施例制得的硅胶@L-聚苯胺@多糖衍生物核壳CSP在正相条件下能够拆分特罗格碱、安息香、反式氧化吡烯、2,2,2-三氟-1-(9-蒽基)乙醇、黄烷酮和6-甲氧基黄烷酮6种手性化合物,填装有硅胶@聚苯胺@多糖衍生物核壳CSP手性柱在经过200次进样分析之后依然具有良好的手性识别能力,能满足日常分析和生产质量控制的需要。
表2正相条件下硅胶@L-聚苯胺@多糖衍生物核壳CSP对6种手性化合物的分离结果
k1′:第一个对映异构体的保留因子,α:分离因子。流动相:正己烷/异丙醇=90/10(v/v);流速:1mL/min;温度:25℃;检测波长:特罗格碱,214nm;安息香,246nm;反式氧化吡烯,228nm;2,2,2-三氟-1-(9-蒽基)乙醇,254nm;黄烷酮,216nm;6-甲氧基黄烷酮,223nm。
本案中,通过上述填料结构的设计以及填料具体的制备方法所制备得到的新型硅胶@L-聚苯胺@多糖衍生物核壳CSP填料能够在手性拆分领域中应用。
基于此,下面将给出多个实施例1制备得到的填料的应用案例,进一步说明本案中制备得到的硅胶@L-聚苯胺@多糖衍生物核壳CSP填料的拆分效果。
应用案例1
经实施例1制备得到的硅胶@L-聚苯胺@多糖衍生物CSP在正相色谱条件下的分离结果如下:
图3为特罗格碱在硅胶@L-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长214nm;
图5为安息香在硅胶@L-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长246nm;
图7为反式氧化吡烯在硅胶@L-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长228nm;
图9为2,2,2-三氟-1-(9-蒽基)乙醇在硅胶@L-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长254nm;
图11为黄烷酮在硅胶@L-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长216nm;
图13为6-甲氧基黄烷酮在硅胶@L-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长223nm;
实施例2
将硅胶(3.0g)与苯胺(0.5ml,5.37mmol)溶于1mol/L盐酸-水溶液(75ml)中,再在将D-樟脑磺酸(3.74g,16.1mmol)加入上述溶液体系中,于3℃磁力搅拌反应20分钟,之后称取过硫酸铵(0.612g,2.68mmol)溶于1mol/L盐酸-水溶液,加入至上述溶液体系中,于3℃磁力搅拌反应24h,得到具有式II所示的结构化合物;待反应完成后,分别用去离子水和无水乙醇交替洗涤至滤液无色,于70℃真空干燥得到化合物D-1。
取α-纤维素(2.0g,12.3mmol)于150ml圆底烧瓶中100℃真空干燥4h,冷却至室温。在氮气保护下,依次加入无水吡啶(80ml)和3,5-二甲基苯基异氰酸酯(7.8ml),于90℃下回流反应24h,得到亮棕色溶液。冷却后将反应液逐滴加入至无水甲醇(800ml)中沉淀,静置过夜,之后减压抽滤,将滤饼溶于无水二氯甲烷(30ml)中,再逐滴将溶液滴入无水甲醇(500ml)中进行二次沉淀,减压抽滤并用大量无水甲醇洗涤滤饼至无吡啶味,60℃真空干燥得到化合物D-2。
称取化合物D-1(3.2g)室温下磁力搅拌使其分散于无水四氢呋喃中,另取化合物D-2(0.8g,1.3mmol)溶于无水四氢呋喃(15ml)中,然后逐滴加入到已分散有化合物D-1的无水四氢呋喃溶液中,滴加完成后,室温下超声反应30分钟。超声结束后,于40℃旋转蒸干无水四氢呋喃,得到化合物D-3。
将化合物D-3于60℃真空干燥4h,湿法过筛后得到所述的硅胶@D-聚苯胺@多糖衍生物核壳CSP填料。图2为实施例硅胶@D-聚苯胺@多糖衍生物核壳CSP的SEM图,表2为实施例硅胶@D-聚苯胺@多糖衍生物核壳CSP的元素分析结果,由图2、表2可知,本发明制备得到了硅胶@D-聚苯胺@多糖衍生物核壳CSP。
图2为实施例2硅胶@D-聚苯胺@多糖衍生物核壳CSP的SEM图;
表3为实施例2硅胶@D-聚苯胺@多糖衍生物核壳CSP元素分析结果
表3硅胶@D-聚苯胺@多糖衍生物核壳CSP元素分析结果
应用案例2
本实施例2所述的硅胶@D-聚苯胺@多糖衍生物CSP在正相色谱条件下的分离结果如下:
图4为特罗格碱在硅胶@D-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长214nm;
图6为安息香在硅胶@D-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长246nm;
图8为反式氧化吡烯在硅胶@D-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长228nm;
图10为2,2,2-三氟-1-(9-蒽基)乙醇在硅胶@D-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长254nm;
图12为黄烷酮在硅胶@D-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长216nm;
图14为6-甲氧基黄烷酮在硅胶@D-聚苯胺@多糖衍生物核壳CSP上的拆分色谱图,所用流动相为正己烷:异丙醇=90:10,检测波长223nm。
由表4和图4、6、8、10、12、14可知,本实施例制得的硅胶@D-聚苯胺@多糖衍生物核壳CSP在正相条件下能够拆分特罗格碱、安息香、反式氧化吡烯、2,2,2-三氟-1-(9-蒽基)乙醇、黄烷酮和6-甲氧基黄烷酮6种手性化合物,填装有硅胶@聚苯胺@多糖衍生物核壳CSP手性柱在经过200次进样分析之后依然具有良好的手性识别能力,能满足日常分析和生产质量控制的需要。
表4正相条件下硅胶@D-聚苯胺@多糖衍生物核壳CSP对6种手性化合物的分离结果
k1′:第一个对映异构体的保留因子,α:分离因子。流动相:正己烷/异丙醇=90/10(v/v);流速:1mL/min;温度:25℃;检测波长:特罗格碱,214nm;安息香,246nm;反式氧化吡烯,228nm;2,2,2-三氟-1-(9-蒽基)乙醇,254nm;黄烷酮,216nm;6-甲氧基黄烷酮,223nm。
因此,本发明的手性复合填料可在正相条件下对多种结构类型的手性化合物进行分离,同时具有很好的稳定性能,适合用作高效液相色谱填料。实验例数据表明,本发明提供的硅胶@聚苯胺@多糖衍生物核壳CSP在正相条件下能够拆分特罗格碱、安息香、反式氧化吡烯、2,2,2-三氟-1-(9-蒽基)乙醇、黄烷酮、6-甲氧基黄烷酮6种手性化合物,具有稳定的手性识别能力,能满足这些手性化合物的对映体分离分析,以及生产过程中质量控制的需要。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。
Claims (9)
2.根据权利要求1所述的一种硅胶@聚苯胺@多糖衍生物核壳CSP填料,其特征在于,所述填料通过一锅法,将苯胺经L/D-樟脑磺酸诱导、掺杂,原位生成L/D-聚苯胺,包覆于硅胶表面,之后将多糖衍生物涂覆到具有上述结构的化合物表面制备而成。
3.根据权利要求1所述的一种硅胶@聚苯胺@多糖衍生物核壳CSP填料,其特征在于,所述多糖衍生物为纤维素-三(3,5-二甲基苯基氨基甲酸酯)。
4.一种硅胶@聚苯胺@多糖衍生物核壳CSP填料的制备方法,其特征在于,包括以下步骤:
1)制备化合物-1
将硅胶与苯胺按照质量比溶于盐酸-水溶液中,得到溶液体系一;
继续将L/D-樟脑磺酸与苯胺按照摩尔比加入溶液体系一中,磁力搅拌反应,得到溶液体系二;
向溶液体系二中加入已溶于盐酸-水溶液的过硫酸铵溶液,磁力搅拌反应;
待反应完成后,经洗涤,并真空干燥得到化合物-1,如式II所示:
2)制备化合物-2
取多糖衍生物于容器中100℃真空干燥,并冷却至室温;
在氮气保护下,依次加入无水吡啶和3,5-二甲基苯基异氰酸酯,回流反应后得到反应液;
冷却后对反应液沉淀、静置并抽滤后,将滤饼溶于二氯甲烷中,得溶液;
对溶液进行二次沉淀,抽滤并洗涤,60℃真空干燥得到化合物-2,所述化合物-2如式III所示:
3)制备化合物-3
将化合物-2超声溶于四氢呋喃,加入已分散有化合物-1的四氢呋喃溶液体系中,超声反应;
反应结束后,于水浴中旋转蒸干溶剂,得到化合物-3,所述化合物-3如式IV所示:
4)制备核壳CSP填料
将化合物-3湿法过筛,并于60℃真空干燥,得到硅胶@聚苯胺@多糖衍生物核壳CSP填料。
5.根据权利要求4所述的方法,其特征在于,所述盐酸-水溶液的浓度为0.5-2mol/L。
6.根据权利要求4所述的方法,其特征在于,所述多糖衍生物为纤维素-三(3,5-二甲基苯基氨基甲酸酯)。
7.一种色谱柱,其包含有如权利要求1所述的硅胶@聚苯胺@多糖衍生物核壳CSP填料。
8.根据权利要求7所述的色谱柱,其特征在于,所述色谱柱为高效液相色谱柱。
9.一种如权利要求1所述的填料在手性拆分领域中的应用。
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