1,10-邻菲咯啉衍生物的合成及其晶体结构

以1,10-邻菲咯啉为原料,经氧化反应合成了1,10-邻菲咯啉-5,6-二酮(1);1与对氟苯甲醛反应合成了2-苯基(4-氟)-咪唑[4,5]-1,10-邻啡咯啉(2).1和2的结构经1H NMR,MS和X-射线单晶衍射表征.1为正交晶系,Pna21空间群,晶胞参数为:a=14.329 0(4)(A),b=12.370 0(3)(A),c=6.395 6(16)(A),α=90°,β=90°,γ=90°,V=1 133.5(5)(A)~3,Z=14,Dc=2.521 g·cm~(-3),μ=12.430 mm~(-1),F(000)=789,最终偏离因子R=0.039 8,wR=0.114 7.2为单斜晶系,P21/n,空间群晶胞参数为:a=9.810 0(4)(A),b=10.951 0(4)(A),c=17.3670(7)(A),α=90.000°,β=99.042(5)°,γ=90.000°,V=1 842.5(12)(A)~3,Z=4,Dc=1.292 g·cm~(-3),μ=0.095mm~(-1),F(000)=732,最终偏离因子R=0.091 2,wR=0.334 9.     

咪唑并[5,6-f][1,10]邻菲咯啉-铜(Ⅱ)-L-亮氨酸(L-酪氨酸)配合物与DNA的作用

应用电子吸收光谱、溴化乙锭(EB)荧光猝灭光谱、粘度测定及琼脂糖凝胶电泳等方法研究了配合物[Cu(IP)(L-Leu)(H2O)]ClO4(1)和[Cu(IP)(L-Trp)(H2O)]ClO4·1.5H2O(2)(IP=咪唑并[5,6-f][1,10]邻菲咯啉,L-Leu=L-亮氨酸,L-Trp=L-酪氨酸)与DNA的相互作用.分析结果表明,配合物通过插入模式与DNA作用,在还原剂维生素C存在的条件下通过羟基自由基机理对DNA进行切割,作用大小次序为:配合物1>2.     

铜(Ⅱ)-邻菲咯啉-(邻菲咯啉-5,6-二酮)络合物的合成及其同脱氧核糖核酸的作用

以邻菲咯啉（phen)、邻菲咯啉－5，6－二酮（dione)为配体首次合成了高氯酸邻菲咯啉－邻菲咯啉－5，6－二酮（Ⅱ）。用荧光光谱，摩尔比，粘度，MLCT减色效应，平衡常数以及荧光能量转移研究了各合物与鱼精子DNA的结合情况，证实了该络合物与DNA存在插入作用。基于络合物对DNA能量转移造成荧光量子产率比值（Φλ/Φ320）的降低，解释了不同波长激发光下，荧光发射峰在加入DNA后产生猝灭和增强两种绝然不同的现象。     

钴与吡啶-2,6-二甲酸和邻菲咯啉三元配合物的合成与晶体结构

合成了钴(Ⅱ)与吡啶-2,6-二甲酸和邻菲咯啉三元配合物Co(DPC)(phen)(H_2O)]·2H_2O(DPC=C7H3O4N;phen=C12H8N2·H_2O),并获得其单晶。晶体学数据如下：C19H17CoN3O7, Mr = 458.29,三斜晶系, P空间群。 a = 7.818(1), b = 9.290(2), c = 14.048(3) ?, α = 81.477(1), β = 81.456(8), γ = 72.970(2)°, V = 958.7(3) ?3, Z =2, F(000) = 470, Dc= 1.588Mg/m3, μ(MoKα) = 0.944mm-1。中心Co(Ⅱ)离子为6配位,6个配位原子形成一个畸变的八面体构型。     

1,10-邻菲咯啉取代苷脲及其一维Ag(Ⅰ)配位聚合物的合成及晶体结构

合成了1,10-邻菲咯啉取代苷脲(L),并用L与硝酸银反应得到一维配位聚合物[AgLNO3]n,利用X-射线衍射方法测定了它们的晶体结构。L:单斜晶系,空间群P21/c,a=1.8545nm,b=1.2504nm,c=1.2818nm,β=108.476°,V=2.8192nm3,Z=7,F(000)=1176,finalGOF=1.093,R1=0.060,wR2=0.1654,。[AgLNO3]n:正交晶系,空间群Pca21,a=1.55149nm,b=1.04907nm,c=1.15892nm,V=1.8863nm3,Z=4,F(000)=1024,finalGOF=1.038,R1=0.042,wR2=0.110。晶体结构表明配体L与Ag髣形成了一维配位聚合物[AgLNO3]n。     

新型2-(2-羧基苯基)咪唑[4,5-f][1,10]邻菲咯啉的合成及其荧光性能

以1,10-邻菲咯啉和邻羧基苯甲醛为原料,经氧化和缩合反应合成了一种新型的桥连配体——2-(2-羧基苯基)咪唑[4,S-f][1,10]邻菲咯啉(1),其结构经1H NMR,IR,MS和元素分析表征.用FL研究了1的荧光性能,结果表明,1具有较强的荧光,发光纯度较好.     

1,10-邻菲啰啉并咪唑衍生物阴离子受体的合成及识别性能

设计合成了2个1,10-邻菲啰啉并咪唑衍生物阴离子受体2-(2-羟基苯基)-1H-咪唑[4,5-f][1,10]邻菲啰啉(1)和2-(2-羟基-5-溴苯基)-1H-咪唑[4,5-f][1,10]邻菲啰啉(2), 受体2的结构由X射线单晶衍射分析确证. 通过紫外-可见光谱滴定及 ¹H NMR滴定研究了这2个受体对F^-, Cl^-, Br^-, I^-, H₂PO₄^-和AcO^- 6种阴离子的识别传感作用及作用机理. 结果表明, 受体对AcO^-, F^-和H₂PO₄^-有较强的传感作用, 溶液颜色由淡黄色变为黄色; 对Cl^-的作用较弱; 而对Br^-和I^-则无明显作用. 通过机理研究发现, 受体与F^-, H₂PO₄^-和AcO^-形成1: 1的氢键超分子, 当阴离子的量超过受体的1倍以后, 咪唑氮上的氢转移到阴离子; 受体与Cl^-以氢键形成超分子复合物, 而与Br^-和I^-作用很弱.     

芳基咪唑并[4,5-f][1,10]菲咯啉的无溶剂绿色合成研究

以菲咯啉二酮、苯甲醛及其衍生物和醋酸铵为原料,采用无溶剂绿色研磨工艺,合成了芳基咪唑并菲咯啉化合物.通过对不同反应条件的筛选,得到一条高效、简便、绿色的合成芳基咪唑并菲咯啉化合物路线,不同的芳醛与菲咯啉二酮都可以较高的收率得到相应的芳基咪唑并[4,5-f][1,10]菲咯啉.     

铜与苯甲酸和邻菲咯啉三元配合物的合成与晶体结构

合成了铜 (Ⅱ )与苯甲酸和邻菲咯啉三元配合物 [Cu(ba) 2 (phen) (H2 O) ] (ba :苯甲酸 ;phen :1,10 邻菲咯啉 ) ,得到了它的单晶。用X射线衍射法测定了配合物的晶体结构。晶体学数据如下 :C52 H4 0 Cu2 N4 O10 ,Mr=10 0 7.96 ,单斜 ,P2 1/n ,a =10 .45 5 (1) ,b =2 1.2 6 3(2 ) ,c =11.199(2 ) ;β =117.6 90 (10 )°,Z =2 ,V =2 2 0 4.5 (5 ) 3,F(0 0 0 ) =10 36 ,Dc=1.5 19Mg/m3,μ =1.0 33mm- 1。晶体分子配位中心Cu(Ⅱ )离子的配位数为 5 ,这五个配位原子形成一个畸变的四方锥结构 ,配合物分子因分子间氢键作用以二聚体形式存在。     

以5-甲基-3-吡唑甲酸和菲咯啉为配体的锰和镉的配合物的合成、晶体结构和荧光性能

以5-甲基-3-吡唑甲酸和菲咯啉为配体, 合成了一个单核锰(Ⅱ)配合物[Mn(HMPCA)₂(phen)]·2H₂O (1)和一个具有双核结构单元的一维镉(Ⅱ)的配位聚合物[Cd₂(HMPCA)₂(phen)₂(H₂O)₂]·2H₂O (2)(H₂MPCa=5-甲基-3-吡唑甲酸, phen=菲咯啉), 并用元素分析、红外光谱、X-射线单晶衍射结构分析、热重分析等对其进行了表征。配合物1属于三斜晶系, 空间群为P1, 配合物2属于正交晶系, 空间群为Pccn。配合物1中的锰(Ⅱ)离子位于一个畸变的八面体配位环境中, 独立结构单元间通过分子间氢键作用构成一个三维的超分子结构。而在2中, 每个镉(Ⅱ)离子位于一个五角双锥体中, 来自5-甲基-3-吡唑甲酸根的氧原子桥联2个相邻的镉(Ⅱ)离子, 形成一个一维链;这些一维链和水分子通过分子间氢键进一步形成一个三维的超分子结构。考察了配合物1和2的热稳定性和荧光性能。     

Synthesis,Structure, and Luminescence Properties of Boron Complex with 4-Bromo-2-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)phenoxide Ligand

Russian Journal of General Chemistry - A boron complex with 4-bromo-2-(1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)phenoxide ligand has been synthesized, and its photoluminescence properties in...     

2-(3-吡唑基)咪唑并[4,5-f]邻菲咯啉的合成

以邻菲咯啉-5,6二-酮和3醛-基吡唑为原料,合成了一种新的配体——2-(3吡-唑基)咪唑并[4,5-f]邻菲咯啉(1),其结构经1H NMR,IR及MS表征。研究了1的电子吸收和荧光性质。     

Synthesis of 2-(pyridin-3-yl)-1-azabicyclo[3.2.2]nonane, 2-(pyridin-3-yl)-1-azabicyclo[2.2.2]octane, and 2-(pyridin-3-yl)-1-azabicyclo[3.2.1]octane, a class of potent nicotinic acetylcholine receptor-ligands

In an attempt to generate nicotinic acetylcholine receptor (nAChR) ligands selective for the alpha4beta2 and alpha7 subtype receptors we designed and synthesized constrained versions of anabasine, a naturally occurring nAChR ligand. 2-(Pyridin-3-yl)-1-azabicyclo[2.2.2]octane, 2-(pyridin-3-yl)-1-azabicyclo[3.2.2]nonane, and several of their derivatives have been synthesized in both an enantioselective and a racemic manner utilizing the same basic synthetic approach. For the racemic synthesis, alkylation of N-(diphenylmethylene)-1-(pyridin-3-yl)methanamine with the appropriate bromoalkyltetrahydropyran gave intermediates which were readily elaborated into 2-(pyridin-3-yl)-1-azabicyclo[2.2.2]octane and 2-(pyridin-3-yl)-1-azabicyclo[3.2.2]nonane via a ring opening/aminocyclization sequence. An alternate synthesis of 2-(pyridin-3-yl)-1-azabicyclo[3.2.2]nonane via the alkylation of N-(1-(pyridin-3-ylethylidene)propan-2-amine has also been achieved. The enantioselective syntheses followed the same general scheme, but utilized imines derived from (+)- and (-)-2-hydroxy-3-pinanone. Chiral HPLC shows that the desired compounds were synthesized in >99.5% ee. X-ray crystallography was subsequently used to unambiguously characterize these stereochemically pure nAChR ligands. All compounds synthesized exhibited high affinity for the alpha4beta2 nAChR subtype ( K i < or = 0.5-15 nM), a subset bound with high affinity for the alpha7 receptor subtype ( K i < or = 110 nM), selectivity over the alpha3beta4 (ganglion) receptor subtype was seen within the 2-(pyridin-3-yl)-1-azabicyclo[2.2.2]octane series and for the muscle (alpha1betagammadelta) subtype in the 2-(pyridin-3-yl)-1-azabicyclo[3.2.2]nonane series.     

Crystal structure of 1-(diphenylmethylene)-2-(thiazolo[4,5-b]pyridin-2-yl)hydrazine

The 1-(diphenylmethylene)-2-(thiazolo[4,5-b]pyridin-2-yl)hydrazine compound (IV) is synthesized based on a 3-amion-2-chloropyridine precursor and characterized by single crystal X-ray diffraction. The structural analysis reveals that compound IV belongs to the monoclinic system, space group P2₁/c, a = 11.869(5) Å, b = 13.155(6) Å, c = 10.970(5) Å, β = 102.431(5)°, V = 1672.6(12) ų, Z = 4. In the crystal structure, the molecular species are linked by intermolecular N-H...N hydrogen bonds into onedimensional chains.     

Synthesis and Anticancer Evaluation of 2-{4-[5-(5-Substituted arylpyrimidin-2-yl)-1H-pyrazol-3-yl]-phenyl}thiazolo[4,5-b]pyridine Derivatives

Russian Journal of General Chemistry - In the present study a new series of 2-{4-[5-(5-substituted arylpyrimidin-2-yl)-1H-pyrazol-3-yl] phenyl}thiazolo[4,5-b]pyridine derivatives (11a–11j)...     

Fluorescence resonance energy transfer from a bio-active imidazole derivative 2-(1-phenyl-1H-imidazo[4,5-f][1,10]phenanthrolin-2-yl)phenol to a bioactive indoloquinolizine system

Novel donor imidazole derivative, 2-(1-phenyl-1H-imidazo [4,5-f][1,10]phenanthrolin-2-yl)-phenol (PIPP) was screened as highly sensitive chemisensor for transition metal ions and it can be used as a "multi-way" optically switchable material. Solvatochromic effects on the fluorescence behaviour of PIPP were studied in different solvents. The fluorescence of PIPP was highly sensitive to both the polarity as well as protic nature of the solvent. Fluorescence (Forster) resonance energy transfer (FRET) process from PIPP to a potent bioactive indoloquinolizine molecule was studied and it is argued that long-range dipole-dipole interaction is operating for the energy transfer mechanism. The energy transfer efficiency (E) and the distance between the acceptor and the donor (r(0)) have been determined.     

2-(2,4-二溴苯酚基)-1H-咪唑[4,5-f][1,10]邻菲罗啉的合成及其对阴离子的识别性能

以1,10-邻菲罗啉为起始原料,经3步反应制得5,6-二胺-1,10-邻菲罗啉(2);2与3,5-二溴水杨醛缩合,合成了新化合物2-(2,4-二溴苯酚基)-1H-咪唑[4,5-f][1,10]邻菲罗啉(4),其结构经1H NMR,IR,元素分析和X-射线单晶衍射表征.利用UV-Vis和荧光光谱研究了4在DMSO中对六种阴离子(X-＝F-,Cl-,Br-,I-,H2PO2-4及AcO-)的识别性能.结果表明,4对F-,H2PO2-4和AcO-具有选择性的识别作用.     

Synthesis and crystal structure of 3-{(2-carboxyethyl)-[2-(3-methylpyrazol-1-yl)-ethyl]amino}- and 3-{(2-carboxyethyl)[2-(5- methylpyrazol-1-yl)-ethyl]amino} propionic acids

Russian Journal of General Chemistry -