CN107365291A - 氧杂杯[4]芳烃单席夫碱、合成方法及其在铜离子识别中的应用 - Google Patents
氧杂杯[4]芳烃单席夫碱、合成方法及其在铜离子识别中的应用 Download PDFInfo
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- 150000004945 aromatic hydrocarbons Chemical class 0.000 title claims abstract description 56
- 239000002262 Schiff base Substances 0.000 title claims abstract description 50
- 150000004753 Schiff bases Chemical class 0.000 title claims abstract description 49
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910001431 copper ion Inorganic materials 0.000 title claims abstract description 22
- 238000010189 synthetic method Methods 0.000 title claims abstract description 9
- -1 aromatic hydrocarbons oxo aromatic aldehyde Chemical class 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- XSXYESVZDBAKKT-UHFFFAOYSA-N 2-hydroxybenzohydrazide Chemical compound NNC(=O)C1=CC=CC=C1O XSXYESVZDBAKKT-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229940042795 hydrazides for tuberculosis treatment Drugs 0.000 claims abstract description 8
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000010992 reflux Methods 0.000 claims abstract description 8
- 238000006467 substitution reaction Methods 0.000 claims abstract description 7
- 125000003545 alkoxy group Chemical group 0.000 claims abstract description 6
- 150000003934 aromatic aldehydes Chemical class 0.000 claims abstract description 6
- 230000000536 complexating effect Effects 0.000 claims abstract description 5
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 8
- 238000004440 column chromatography Methods 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 150000002576 ketones Chemical class 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 claims 1
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- 238000003786 synthesis reaction Methods 0.000 abstract description 5
- 150000004696 coordination complex Chemical class 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000012299 nitrogen atmosphere Substances 0.000 abstract 1
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 39
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 37
- 239000000243 solution Substances 0.000 description 29
- 150000001875 compounds Chemical class 0.000 description 15
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- ZCHPKWUIAASXPV-UHFFFAOYSA-N acetic acid;methanol Chemical compound OC.CC(O)=O ZCHPKWUIAASXPV-UHFFFAOYSA-N 0.000 description 6
- 150000001768 cations Chemical class 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
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- 239000012043 crude product Substances 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 238000000034 method Methods 0.000 description 4
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- 238000002371 ultraviolet--visible spectrum Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
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- 150000003983 crown ethers Chemical class 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 2
- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
- 0 CC1=CC*C1=C Chemical compound CC1=CC*C1=C 0.000 description 2
- 229920000858 Cyclodextrin Polymers 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- VTJUKNSKBAOEHE-UHFFFAOYSA-N calixarene Chemical class COC(=O)COC1=C(CC=2C(=C(CC=3C(=C(C4)C=C(C=3)C(C)(C)C)OCC(=O)OC)C=C(C=2)C(C)(C)C)OCC(=O)OC)C=C(C(C)(C)C)C=C1CC1=C(OCC(=O)OC)C4=CC(C(C)(C)C)=C1 VTJUKNSKBAOEHE-UHFFFAOYSA-N 0.000 description 2
- QQZGYZFGNGKDOE-UHFFFAOYSA-N cobalt;methanol Chemical compound [Co].OC QQZGYZFGNGKDOE-UHFFFAOYSA-N 0.000 description 2
- OPQARKPSCNTWTJ-UHFFFAOYSA-L copper(ii) acetate Chemical compound [Cu+2].CC([O-])=O.CC([O-])=O OPQARKPSCNTWTJ-UHFFFAOYSA-L 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 229940046892 lead acetate Drugs 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- DXYDPQREALBUTH-UHFFFAOYSA-L manganese(2+) methanol diacetate Chemical compound CO.C(C)(=O)[O-].[Mn+2].C(C)(=O)[O-] DXYDPQREALBUTH-UHFFFAOYSA-L 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- UYCLBSPFLBPKNJ-UHFFFAOYSA-L methanol nickel(2+) diacetate Chemical compound CO.C(C)(=O)[O-].[Ni+2].C(C)(=O)[O-] UYCLBSPFLBPKNJ-UHFFFAOYSA-L 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 238000000967 suction filtration Methods 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- 238000002211 ultraviolet spectrum Methods 0.000 description 2
- 239000000052 vinegar Substances 0.000 description 2
- 235000021419 vinegar Nutrition 0.000 description 2
- VWTSXINFCUODBJ-UHFFFAOYSA-L zinc methanol diacetate Chemical compound [Zn++].CO.CC([O-])=O.CC([O-])=O VWTSXINFCUODBJ-UHFFFAOYSA-L 0.000 description 2
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- JLODBVPKGYAHHZ-UHFFFAOYSA-L copper methanol diacetate Chemical compound CO.C(C)(=O)[O-].[Cu+2].C(C)(=O)[O-] JLODBVPKGYAHHZ-UHFFFAOYSA-L 0.000 description 1
- 229940097362 cyclodextrins Drugs 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 150000007857 hydrazones Chemical class 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 235000008409 marco Nutrition 0.000 description 1
- 244000078446 marco Species 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000001455 metallic ions Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 230000000269 nucleophilic effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 125000004437 phosphorous atom Chemical group 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
氧杂杯[4]芳烃单席夫碱的合成方法及其在铜离子识别中的应用,属于有机合成技术领域,氮气氛围中,将氧杂杯[4]芳烃和丙酮混合加热至回流后,再加入氯代烷氧基取代的芳香醛进行回流反应,得到单取代氧杂杯[4]芳烃氧代芳醛衍生物;再将单取代氧杂杯[4]芳烃氧代芳醛衍生物与水杨酰肼或吡啶酰肼在乙醇中加热回流反应,得到氧杂杯[4]芳烃单席夫碱。将氧杂杯[4]芳烃单席夫碱与铜离子形成络合比为1∶2的配合物,可形成具有良好的热稳定性和化学稳定性的金属配合物,用于在溶液中识别铜离子,具有精准的优势。
Description
技术领域
本发明属于有机合成技术领域,具体涉及氧杂杯[4]芳烃单席夫碱的合成及其应用。
背景技术
杯芳烃是继冠醚和环糊精之后的第三代主体分子,作为超分子领域里研究的热点,由于其易于制备,热力学稳定以及具有显著的识别能力,已经广泛的应用于纳米材料、高分子材料、有机金属框架材料等领域。氧杂杯[4]芳烃是杯[4]芳烃的类似物,只是碳桥中间插入了一个氧原子,其制备方法与杯[4]芳烃相似。与传统的杯芳烃相比,氧杂杯[4]芳烃空腔尺寸更大,具有更为灵活的锥形结构,性质也得到明显的改变。Marcos和Neri合成了杯[4]芳烃受体并且研究了它们与各种阴阳离子的络合性质。在此背景下对氧杂杯[4]芳烃的下缘酚羟基进行修饰,合成一类官能化的单席夫碱衍生物((a) Seven, H. H. Cynthia,A. F.; Jeanette, A.; Hans, Z. Dibenzotetraaza crown ethers: a new family ofcrown ethers based on o-phenylenediamine J. Org. Chem. 2005, 70,5804。(b) Liu,Y.; Han, B. H.; Chen, Y. T.Molecular recognition and complexationthermodynamics of dye guest Molecules by Modified Cyclodextrins andCalixarenesulfonates J. Phys. Chem.2002, 106,4678.)。
席夫碱是一类含有C=N基团的有机化合物,是由醛或酮的羰基和伯胺、肼及其衍生物的-NH2基团缩合而得。席夫碱可以通过-C=N-上的氮原子和氧、硫或磷原子一同作为供体与金属离子配位,形成稳定的席夫碱金属配合物((a) Shrivastava. H. Y, Unni. B,Anal. J, A fluorescence-based assay for nanogram quantification of proteinsusing a protein binding ligand Bioanal. Chem., 2003, 375:169。 (b) Zheng, Z.Z.; Wang, L.; Liu, J.;Hydrothermal synthesis, structures, luminescence andmagnetic properties of Zn(II) and Cu(II) complexes with new hydrazone ligand.J. Mol.Struct. 2012, 1018, 78.)。
发明内容
基于以上现有技术状况,本发明第一目的是提出一类氧杂杯[4]芳烃单席夫碱。
其结构式如下:
其中:
单席夫碱为对位、邻位、间位中的任意一种;
n为烷基碳链数,为3或4;
Ar为2-羟基苯基或2-吡啶基。
本发明上述氧杂杯[4]芳烃单席夫碱是一类特殊的席夫碱,由于其末端有CH=N基团,能与金属阳离子之间形成稳定的配位化合物,在配位化学中具有重要的的应用。该氧杂杯[4]芳烃单席夫碱可以在溶液中与铜离子形成络合比为1∶2的配合物,从而识别铜离子。
本发明第二目的是提供以上化合物的合成方法。
方法一:
1)在氮气保护下,在碳酸钾存在下,以碘化钾为催化剂,将氧杂杯[4]芳烃和干燥的丙酮混合,加热至回流后,再加入氯代烷氧基取代的芳香醛,继续加热进行回流反应,反应结束后,通过柱层析分离得到单取代氧杂杯[4]芳烃氧代芳醛衍生物;
合成路线如下:
2)将单取代氧杂杯[4]芳烃氧代芳醛衍生物与水杨酰肼在乙醇中加热回流进行反应,得到氧杂杯[4]芳烃氧代芳醛酰肼类衍生物,即氧杂杯[4]芳烃单席夫碱。
合成路线如下:
。
方法二:
1)在氮气保护下,在碳酸钾存在下,以碘化钾为催化剂,将氧杂杯[4]芳烃和干燥的丙酮混合,加热至回流后,再加入氯代烷氧基取代的芳香醛,继续加热进行回流反应,反应结束后,通过柱层析分离得到单取代氧杂杯[4]芳烃氧代芳醛衍生物;
2)将单取代氧杂杯[4]芳烃氧代芳醛衍生物与吡啶酰肼在乙醇中加热回流反应,得到氧杂杯[4]芳烃氧代芳醛酰肼类衍生物,即氧杂杯[4]芳烃单席夫碱。
合成路线如下:
。
本发明以上两种方法中,经过相同的步骤1)实现了单烷基化选择性地发生在远离氧桥的酚羟基上,因此氧杂杯[4]芳烃空腔尺寸更大,构象更多,具有更为灵活的锥形结构,性质也得到明显的改变。而在步骤2)中,可以将水杨酰肼或吡啶酰肼中任意一种与单取代氧杂杯[4]芳烃氧代芳醛衍生物混合进行回流反应,使氧杂杯[4]芳烃下缘的酚羟基得到修饰,同样都能得到目标产物——氧杂杯[4]芳烃氧代芳醛酰肼类衍生物(即氧杂杯[4]芳烃单席夫碱)。
进一步地,本发明步骤1)中所述氧杂杯[4]芳烃和氯代烷氧基取代的芳香醛的投料摩尔比为2∶3。如太少量的氯代芳醛则不能使氧杂杯[4]芳烃反应充分,而本发明以稍过量的氯代芳醛可提高反应产率,在该摩尔比下反应产率可达30%~50%。
步骤1)中所述碳酸钾和碘化钾的投料摩尔比为1∶1。该催化和碱性条件下,碘化钾置换出氯代芳醛中的氯,碳酸钾提供碱性条件同时脱去氧杂杯[4]芳烃上的羟基H发生亲核取代反应。
步骤2)中所述单取代氧杂杯[4]芳烃氧代芳醛衍生物和水杨酰肼的投料摩尔比为1∶1.2。本发明采用过量的水杨酰肼可提高目标产物的产率,在该摩尔比下反应产率可达40%~55%。
步骤2)中所述单取代氧杂杯[4]芳烃氧代芳醛衍生物和吡啶酰肼的投料摩尔比为1∶1.2。本发明采用过量的吡啶酰肼可使单取代氧杂杯[4]芳烃氧代芳醛衍生物充分反应,从而提高反应产率,在该摩尔比下反应产率可达30%~45%。
本发明的第三个目的是提出以上氧杂杯[4]芳烃单席夫碱在溶液中用于铜离子识别的应用。
将氧杂杯[4]芳烃单席夫碱与铜离子形成络合比为1∶2的配合物,对溶液中铜离子进行识别。
可形成具有良好的热稳定性和化学稳定性的金属配合物,用于在溶液中识别铜离子,具有精准的优势。
附图说明
图1为实施例1中化合物与七种金属阳离子紫外-可见光谱图。
图2为实施例1中化合物和不同浓度Cu2+的紫外-可见光谱图。
图3为实施例2中化合物与七种金属阳离子紫外-可见光谱图。
图4为实施例2中化合物和不同浓度Cu2+的紫外-可见光谱图。
具体实施方式
一、制备氧杂杯[4]芳烃单席夫碱:
实施例1,制备结构式如下的单取代席夫碱:
制备方法:
在氮气保护下,在圆底烧瓶中加入氧杂杯[4]芳烃4g (5.9 mmol )和无水碳酸钾1.2 g( 9.00 mmol )、碘化钾1.50 g ( 9.00 mmol )、干燥的丙酮150 mL,加热回流反应30分钟,然后加入碳链数为4,对位的氯代芳醛 1.8 g (9 mmol ) 继续加热反应回流2天。反应结束后,冷却降温,过滤固体并收集滤液。用柱层析(乙酸乙酯和石油醚的混合体积比为1:3)分离得粗产物,在粗产物中加入少量甲醇,加热溶解后放入冰浴半小时,趁冷抽滤,得白色固体单取代氧杂杯[4]氧代醛。
称取上述合成的单取代氧杂杯[4]氧代醛400.0 mg(0.5mmol)、水杨酰肼90.0 mg(0.6mmol),在乙醇中加热回流反应12小时,反应结束后旋干,用10 mL冰甲醇洗涤三次,抽滤得氧杂杯[4]芳烃单席夫碱。
经分析,产率为44%,产物的结构表征数据如下:
1H NMR (400 MHz, CDCl3) δ 11.84 (s, 1H, NH), 9.22 (s, 1H, OH), 8.50 (s,1H, OH), 8.13 (brs, 1H, ArH), 7.78 (s, 1H, OH), 7.71 (d, J = 7.2 Hz, 2H,ArH), 7.43 (t, J = 7.8 Hz, 1H, ArH), 7.30 (s, 2H, ArH), 7.14 – 7.08 (m, 3H,ArH), 7.04 – 6.97 (m, 5H, ArH), 6.89 (t, J = 7.6 Hz, 2H, ArH), 4.95 (d, J =9.2 Hz, 1H, CH2), 4.71 (d, J = 10.0 Hz, 1H, CH2), 4.53 – 4.44 (m, 2H, CH2),4.28 – 4.17 (m, 6H, CH2), 4.10 (d, J = 13.6 Hz, 1H, CH2), 3.56 (d, J = 13.2Hz, 1H, CH2), 3.46 (d, J = 14.0 Hz, 1H, CH2), 3.31 (d, J = 13.2 Hz, 1H, CH2),2.28 (brs, 4H, CH2), 1.27 (s, 9H, C(CH3)3), 1.24 (s, 18H, C(CH3)3), 1.14 (s,9H, C(CH3)3); 13C NMR (100 MHz, CDCl3) δ: 161.4, 152.7, 151.1, 149.4, 147.8,147.7, 143.6, 142.5, 141.6, 134.6, 132.7, 131.2, 129.5, 128.5, 128.1, 127.4,126.7, 126.6, 126.5, 125.9, 125.7, 125.6, 125.5, 125.1, 123.6, 122.7, 122.6,118.9, 114.9, 113.5, 76.3, 72.2, 71.7, 67.7, 34.2, 33.9, 33.8(2C), 32.8,31.6, 31.5, 31.4, 31.3, 31.1, 30.0, 26.8, 26.0;IR (KBr) υ: 3371, 2958, 2870,1648, 1603, 1555, 1484, 1362, 1303, 1247, 1210, 1111, 1072, 971, 875, 824,755 cm-1;MS (m/z):HRMS (ESI) Calcd. for C63H76N2NaO8 ([M+Na]+): 1011.5499,found: 1011.5519。
实施例2:制备结构式如下的单取代席夫碱:
制备方法如下:
在氮气保护下,在圆底烧瓶中加入氧杂杯[4]芳烃4g (5.9 mmol )和无水碳酸钾1.2 g( 9.00 mmol ) ,碘化钾1.50 g ( 9.00 mmol ),在150 mL干燥的丙酮中加热回流反应30分钟,然后加入碳链数为4,对位的氯代芳醛 1.8 g (9 mmol ) 继续加热反应回流2天。反应结束后,冷却降温,过滤固体并收集滤液。用柱层析(乙酸乙酯和石油醚的混合体积比为1:3)分离得粗产物,在粗产物中加入少量甲醇,加热溶解后放入冰浴半小时,趁冷抽滤,得白色固体单取代氧杂杯[4]氧代醛。
称取上述合成的氧杂杯[4]芳烃氧代醛400.0 mg(0.5mmol),吡啶酰肼80.0 mg(0.6mmol),在乙醇中加热回流过夜,旋干,用10 ml冰甲醇洗涤三次,抽滤得氧杂杯[4]芳烃单席夫碱。
经分析,产率为34%,产物结构表征数据如下:
1H NMR (400 MHz, CDCl3) δ 10.97 (s, 1H, NH), 9.24 (s, 1H, OH), 8.58-8.57(m, 1H, ArH), 8.51 (s, 1H, CH=N), 8.33-8.30 (m, 1H, ArH), 8.29 (s, 1H, OH),7.92-7.88 (m, 1H, ArH), 7.77 (s, 1H, OH), 7.50-7.46 (m, 1H, ArH), 7.44 (m,1H, ArH), 7.37-7.34 (m, 1H, ArH), 7.32-7.29 (m, 3H, ArH), 7.14 (d, J = 2.4Hz, 1H, ArH), 7.11 (d, J = 2.4 Hz, 1H, ArH), 7.08 (d, J = 2.4 Hz, 1H, ArH),7.04-7.01 (m, 2H, ArH), 6.95 (d, J = 2.4 Hz, 1H, ArH), 6.88 (d, J = 2.4 Hz,1H, ArH), 4.95 (d, J = 9.2 Hz, 1H, CH2), 4.72 (d, J = 10.0 Hz, 1H, CH2), 4.53(d, J = 12.8 Hz, 1H, CH2), 4.44 (d, J = 10.0 Hz, 1H, CH2), 4.29-4.17 (m, 6H,CH2), 4.12 (d, J = 13.6 Hz, 1H, CH2), 3.56 (d, J = 13.6 Hz, 1H, CH2), 3.46 (d,J = 14.0 Hz, 1H, CH2), 3.32 (d, J = 12.8 Hz, 1H, CH2), 2.28 (brs, 4H, CH2),1.27 (s, 9H, C(CH3)3), 1.24 (s, 9H, C(CH3)3), 1.23 (s, 9H, C(CH3)3), 1.13 (s,9H, C(CH3)3); 13C NMR (100 MHz, CDCl3) δ: 160.0, 159.3, 152.7, 151.2, 149.4,149.1, 148.9, 148.0, 147.8, 147.6, 143.5, 142.4, 141.4, 137.7, 134.9, 132.8,131.2, 129.7, 128.6, 128.1, 127.5, 127.4, 126.8, 126.7, 126.6, 126.5, 125.9,125.7, 125.5, 125.1, 123.6, 122.9, 122.7, 122.6, 120.9, 117.8, 112.5, 76.4,72.2, 71.7, 67.7, 34.2, 33.9(2C), 33.8, 32.8, 31.6, 31.5, 31.4, 31.3, 31.2,30.0, 26.8, 26.1;IR (KBr) υ: 3374, 2957, 2870, 1696, 1583, 1484, 1362, 1265,1202, 1136, 1076, 996, 877, 783, 749 cm-1;MS (m/z):HRMS (ESI) Calcd. forC62H75N3NaO7 ([M+Na]+): 996.5503, found: 996.5515。
二、氧杂杯[4]芳烃单席夫碱的应用:
例1:
取实施例1制得的氧杂杯[4]芳烃单席夫碱和二氯甲烷进行混合,制得浓度为5.0×10-4 mol/L的氧杂杯[4]芳烃单席夫碱二氯甲烷溶液50 mL。
并分别配制浓度为1.0×10-3 mol/L的醋酸盐甲醇溶液50 mL:醋酸铜甲醇溶液、醋酸钴甲醇溶液、醋酸镍甲醇溶液、醋酸锌甲醇溶液、醋酸锰甲醇溶液、醋酸铅甲醇溶液、醋酸镉甲醇溶液。
取等体积的二氯甲烷和甲醇混合,形成二氯甲烷和甲醇的混合溶液。
平行试验:取七只容器,分别加入1 mL上述七种醋酸盐甲醇溶液,然后再向各容器中加入1 mL上述氧杂杯[4]芳烃单席夫碱二氯甲烷溶液,再分别加入二氯甲烷和甲醇(体积比为1:1)的混合溶液8 mL。混合均匀后,在等量席夫碱与金属离子均匀混合的条件下,对各容器进行紫外吸收测定。从图1中可以看出实施例1中化合物对Cu2+有较好的配位作用。
因此在紫外光谱中测定实施例1制得的化合物与不同浓度的Cu2+配位能力。
取浓度为5.0×10-4 mol/L实施例1中化合物溶液1 mL和分别与0、0.1、0.2、0.4、0.5、0.6、0.8、1.0、2.0和5.0 ml浓度为1.0×10-3 mol/L的醋酸铜甲醇溶液混合于十只容量瓶中,再用以上二氯甲烷和甲醇的混合溶液分别定容至10 mL,在同一金属阳离子条件下,测定不同含量铜离子的紫外吸收现象。
如图2所示,化合物与不同浓度的铜离子紫外吸收。图2表明:在同一金属阳离子滴定实验中,发现席夫碱与金属Cu2+离子之间存在着滴定平衡及饱和度,随着Cu2+的逐渐加入,吸收强度逐渐增强。而当铜离子浓度为氧杂杯[4]芳烃单席夫碱的2.0倍浓度以后时,谱图不再出现显著变化。可见:该氧杂杯[4]芳烃单席夫碱与铜离子络合比为1∶2。
例2:
取实施例2制得的氧杂杯[4]芳烃单席夫碱和二氯甲烷进行混合,制得浓度为5.0×10-4 mol/L的氧杂杯[4]芳烃单席夫碱二氯甲烷溶液50 mL。
并分别配制浓度为1.0×10-3 mol/L的醋酸盐甲醇溶液50 mL:醋酸铜甲醇溶液、醋酸钴甲醇溶液、醋酸镍甲醇溶液、醋酸锌甲醇溶液、醋酸锰甲醇溶液、醋酸铅甲醇溶液、醋酸镉甲醇溶液。
取等体积的二氯甲烷和甲醇混合,形成二氯甲烷和甲醇的混合溶液。
平行试验:取七只容器,分别加入1 mL以上七种醋酸盐甲醇溶液,然后再向各容器中加入1 mL上述氧杂杯[4]芳烃单席夫碱二氯甲烷溶液,再分别加入二氯甲烷和甲醇(体积比为1:1)的混合溶液8 mL。混合均匀后,在等量席夫碱与金属离子均匀混合的条件下,对各容器进行紫外吸收测定。从图3中可以看出实施例2中化合物对Cu2+有较好的配位作用。
从图3中可以看出:实施例2制得的化合物对Cu2+配位能力较强。因此采用与例1类同的方法,在紫外光谱中测定实施例2制得的化合物与不同浓度的Cu2+配位能力。
如图4所示,化合物与不同浓度的铜离子紫外吸收。由图4可见:在同一金属阳离子滴定实验中,随着Cu2+的逐渐加入,吸收强度逐渐增强。而当铜离子浓度为氧杂杯[4]芳烃单席夫碱的2.0倍浓度以后时,谱图不再出现明显变化,表明该氧杂杯[4]芳烃单席夫碱与铜离子络合比为1∶2。
氧杂杯[4]芳烃单席夫碱与铜离子以1∶2的方式络合可形成具有良好的热稳定性和化学稳定性的金属配合物,用于在溶液中识别铜离子。
Claims (7)
1.氧杂杯[4]芳烃单席夫碱,其结构式如下:
其中:
单席夫碱为对位、邻位、间位中的任意一种;
n为烷基碳链数,为3或4;
Ar为2-羟基苯基或2-吡啶基。
2.如权利要求1所述氧杂杯[4]芳烃单席夫碱的合成方法,其特征在于包括以下步骤:
1)在氮气保护下,在碳酸钾存在下,以碘化钾为催化剂,将氧杂杯[4]芳烃和干燥的丙酮混合,加热至回流后,再加入氯代烷氧基取代的芳香醛,继续加热进行回流反应,反应结束后,通过柱层析分离得到单取代氧杂杯[4]芳烃氧代芳醛衍生物;
2)在乙醇中,将水杨酰肼或吡啶酰肼与单取代氧杂杯[4]芳烃氧代芳醛衍生物混合进行加热回流反应,得到氧杂杯[4]芳烃单席夫碱。
3.根据权利要求2所述的氧杂杯[4]芳烃单席夫碱的合成方法,其特征在于:步骤1)中所述氧杂杯[4]芳烃和氯代烷氧基取代的芳香醛的投料摩尔比为2∶3。
4.根据权利要求2所述的氧杂杯[4]芳烃单席夫碱的合成方法,其特征在于:步骤1)中所述碳酸钾和碘化钾的投料摩尔比为1∶1。
5.根据权利要求2所述的氧杂杯[4]芳烃单席夫碱的合成方法,其特征在于:步骤2)中所述单取代氧杂杯[4]芳烃氧代芳醛衍生物和水杨酰肼的投料摩尔比为1∶1.2。
6.根据权利要求2所述的氧杂杯[4]芳烃单席夫碱的合成方法,其特征在于:步骤2)中所述单取代氧杂杯[4]芳烃氧代芳醛衍生物和吡啶酰肼的投料摩尔比为1∶1.2。
7.如权利要求1所述氧杂杯[4]芳烃单席夫碱在溶液中识别铜离子的应用,其特征在于:将氧杂杯[4]芳烃单席夫碱与铜离子形成络合比为1∶2的配合物,对溶液中铜离子进行识别。
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