带有不同端炔保护基团的新型苯乙炔树枝状化合物的合成

以1,3,5-三溴苯为原料,通过Sonogashira反应,设计并合成了两种带有不同端炔保护基团的1,3,5-取代的苯乙炔树枝状化合物:1,3,5-三[3-(3-甲基-3-羟基-1-丁炔基)-5-(三异丙基硅乙炔基)苯基乙炔基]苯(B1)和1,3,5-三[3-(三甲基硅乙炔基)-5-(三异丙基硅乙炔基)苯基乙炔基]苯(B2),并对合成路线的选择进行了比较和讨论.用1H NMR,13C NMR,质谱,元素分析等表征手段确认了中间体及最终产物的结构.这两种苯乙炔树枝状化合物各自带有两类不同的周边端炔保护基团,可根据其脱保护条件的不同引入不同的周边功能基团.     

N-[4-(三氟甲氧基)苯基]氨基甲酸苯酯的合成

以三氟甲氧基苯为起始原料，经硝化、加氢还原和酰化反应合成了N-[4-(三氟甲氧基)苯基\]氨基甲酸苯酯，总收率84.6%，纯度98.9%，其结构经¹H NMR和MS（ESI）确证。     

一种新的离子液体负载的双(三氟乙酰氧基)碘苯试剂的合成

以氯乙酰氯和对碘苯胺为原料,经酰化合成了4-碘-氯乙酰苯胺,接着与1-甲基咪唑反应得到氯化1-甲基-3-(4-碘苯氨基甲酰甲基)咪唑钅翁,随后在水溶液中发生阴离子交换,合成了1-甲基-3-(4-碘苯氨基甲酰甲基)咪唑四氟硼酸盐;四氟硼酸盐在过氧化氢/三氟乙酸酐体系中氧化得到一种新的离子液体负载的双(三氟乙酰氧基)碘苯试剂1-甲基-3-[4-双(三氟乙酰氧基)碘苯氨基甲酰甲基]咪唑四氟硼酸盐。反应总收率62.3%。试剂没有吸湿性,在空气中长期放置不变质。化学结构用IR、1H NMR、13C NMR、19F NMR和元素分析表征。     

1,3-二氢苯并[c]异噻唑2,2-二氧化物的合成工艺改进

1,3-二氢苯并[c]异噻唑2,2-二氧化物是常见的药物骨架，本文以邻氯氯苄和亚硫酸钠为原料，经亲核取代、酰氯化、酰胺化及偶联环化反应，以55%的总收率和99%的纯度合成了1,3-二氢苯并[c]异噻唑2,2-二氧化物，其结构经¹H NMR， ¹³C NMR和FT-IR确证。     

4-对丙烯基苯氨基喹唑啉衍生物的合成及抗肿瘤活性研究

以3-羟基苯甲腈为原料,经过6步反应(醚化、硝化、还原、甲脒的形成、环化和取代)合成了两个新型4-对丙烯基苯氨基喹唑啉衍生物4-[4-(E)-丙烯基苯氨基]-6-[2-吗啉基乙氧基]喹唑啉和4-[4-(E)-丙烯基苯氨基]-6-[3-吗啉基丙氧基]喹唑啉。化合物的结构经IR、HRMS、1H NMR和13C NMR确认。以人结肠癌细胞(SW480)、人肺癌细胞(A549)、人皮肤鳞状细胞癌细胞(A431)为模型,采用MTT法对所得化合物进行了体外抗肿瘤活性评价。结果表明,两个化合物均具有一定的抗肿瘤活性。特别是化合物4-[4-(E)-丙烯基苯氨基]-6-[3-吗啉基丙氧基]喹唑啉对所试肿瘤细胞均表现出良好的生长抑制活性(IC50:10.0~18.2μmol/L),与临床使用药物吉非替尼的活性(IC50:4.1~18.5μmol/L)相当。     

新型4-(5-N-取代-1,3,4-噻二唑-2-巯基)-苯并[4,5]呋喃[3,2-d]嘧啶类衍生物的合成及其抗癌活性

将5-取代胺基-2-巯基-1,3,4-噻二唑引入苯并[4,5]呋喃[3,2-d]嘧啶中,设计并合成了10个新型的4-(5-N-取代-1,3,4-噻二唑-2-巯基)-苯并[4,5]呋喃[3,2-d]嘧啶类衍生物(3a～3j),其结构经1H NMR,13C NMR,IR和MS确认。用MTT法测定了3a～3j对人胃腺癌细胞体(MGC)的体外增殖活性。结果表明,3a～3j均具有不同程度的抑制MGC的活性,其中4-(5-N-2’-甲氧基苯基-1,3,4-噻二唑-2-巯基)-苯并[4,5]呋喃[3,2-d]嘧啶(3j)在10μmol·L-1的浓度下对MGC的抑制率为86.4%。     

苯并[de]蒽-7-酮类叔芳胺的合成及其发光性能的研究

芳基伯胺与芳基溴在Pd(dba)2/P(t-Bu)3催化下于80 ℃甲苯溶液中反应生成芳基仲胺, 芳基仲胺再与3-溴苯并[de]蒽-7-酮在Pd(OAc)2/P(t-Bu)3催化下于120 ℃邻二甲苯溶液中反应生成苯并[de]蒽-7-酮类叔芳胺有机电致发光材料; 3-二苯基氨基苯并[de]蒽-7-酮与丙二腈反应生成2-(3-二苯基氨基)苯并[de]蒽-7-基亚基丙二腈. 产物的结构经1H NMR, 13C NMR, 13C (DEPT), HRMS光谱所证实. 用UV-Vis, PL, DSC测定了化合物的发光性能.     

1,3,5-三[(4’-乙炔基苯基)乙炔基]苯的合成

设计了多种合成路线制备芳香炔基树枝状化合物中间体1,3,5-三[(4’-乙炔基苯基)乙炔基]苯,通过一系列的合成路线和反应条件的对比,发现多官能团的端基炔化合物与芳基溴化合物之间发生多重Sonogashira反应时,常会生成不同取代程度的极性相似化合物,因而难以分离.采用多官能团的端基炔化合物与芳基碘化合物反应可以避免这种情况.最终确定以1,3,5-三溴苯和2-甲基-3-丁炔-2-醇为原料,制得中间产物1,3,5-三乙炔基苯;再以对碘苯胺和三甲基硅乙炔为原料,经重氮化化、卤代反应制得4-三甲基硅乙炔基碘苯;后者与1,3,5-三乙炔苯经Sonogashira反应、裂解去保护反应,制得化合物1,3,5-三[(4’-乙炔基苯基)乙炔基]苯.用1H NMR,13C NMR,元素分析等表征手段确认了中间体及最终产物的结构.     

2-苯硫基苯并咪唑的合成

在不使用金属催化剂、配体及强碱的情况下,以DMF为溶剂,于130℃反应24 h,2-巯基苯并咪唑与二苯基碘三氟甲磺酸盐高选择性地发生芳基化反应,合成了2-苯硫基苯并咪唑,收率80.7%,其结构经1H NMR和13C NMR确证。     

均苯三甲酰胺-胺的合成及表征

以均苯三甲酰氯(TMC)和1,3-二氨基-2-丙醇(DAP)为原料,通过酯化、酰胺化和酯胺解反应,合成了树枝状大分子化合物均苯三甲酰胺-胺(TMAAM),并优化了合成工艺.考察了甲醇用量、缚酸剂种类及用量和原料DAP用量等对反应收率的影响,分析了酯胺解反应机理.用红外光谱(IR)、核磁(NMR)和高分辨质谱(HRMS)分析了TMAAM的化学结构.该合成方法反应条件温和,操作简单,后处理方便,并具有较高的反应经济性,产品收率最高可达57%.     

Monofunctionalized pillar[5]arene-based stable [1]pseudorotaxane

A new monofunctionalized pillar[5]arene bearing imidazolium moiety that formed stable [1]pseudorotaxane even at high concentration (100 mmol/L) was reported. [1]Rotaxane was obtained effi ciently through thiol-ene reaction from [1]pseudorotaxane which further confi rmed the formation of [1]pseudorotaxane.     

Helic[6]arene-Based Chiral Pseudo[1]rotaxanes and [1]Rotaxanes

Chiral pseudo[1]rotaxanes and [1]rotaxanes constructed from macrocyclic arenes still remain a big challenge mainly owing to the lack of such chiral macrocycles. In this work, a new system of chiral pseudo[1]rotaxanes formed by self-inclusion of helic[6]arene containing amide linked with the terminal tertiary amines was first discovered. Based on an atom-economic stopping strategy, a pair of chiral [1]rotaxanes were conveniently obtained in almost quantitative yields by blocking the pseudo[1]rotaxanes with monobenzyl bromide of tetraphenylethene. The structures of pseudo[1]rotaxanes and [1]rotaxanes were characterized by 2D NMR spectra in solution, combined with DFT calculations. The photophysical properties further revealed the efficient chirality transfer of helic[6]arene to the tetraphenylethene moiety, compared to their unthreaded chiral isomers. The discovery of the chiral pseudo[1]rotaxanes allows for a wide and available synthesis of chiral [1]rotaxanes, and also opening a new avenue to the design of chiral supramolecular materials.     

新型色满酮并环己烷螺环氧化吲哚类化合物的合成

以色酮 氧化吲哚合成子与硝基苯乙烯,在催化剂DBU作用下,在二氯甲烷中发生Michael/Michael加成环化反应,合成了9个未见文献报道的新型色满酮并环己烷螺环氧化吲哚类化合物3a~3i产率72%~87%, dr值4/1~2/1, 其结构经¹H NMR, ¹³C NMR和HR-MS（ESI-TOF）表征确定。     

Temperature-driven braking of γ-cyclodextrin-curcubit[6]uril-cowheeled [4]rotaxanes

A capping moiety, playing a role of the brake, slowed down the rotation speed of the cyclodextrin of a cyclodextrin-cucurbit[6]uril-cowheeled [3]rotaxane. Lowering the temperature further stopped the rotation at the NMR timescale.     

Tetrakisdehydro[18]annuleno[20]annulene

Tetrakisdehydro[18]annuleno[20]annulene has been synthesized. The ¹H NMR spectra clearly indicate the induction of dia- and paramagnetic ring currents in 18- and 20-rings, respectively. A marked suppression of the diatropicity in the 18π moiety was observed being in the same trend in other tetrakisdehydro[4n]annuleno[4n′+2]annulenes. The ¹H NMR spectroscopic behavior of the annulenoannulenes is consistent with theoretical conclusion.     

Tetrakisdehydro[16]annuleno[18]annulene

Tetrakisdehydro[16]annuleno consisting of trisdehydro[16]annulene and bisdehydro[18] annulene has been synthesized. Induction of para- and diamagnetic ring currents in 16- and 18-membered rings, respectively, was clearly recognized by the ¹H NMR spectroscopy. A marked suppresion of the diatropicity in the 18π moiety was observed in the same trend as observed in tetrakisdehydro[14]annuleno[16]annulene.     

Generation and characterization of highly strained dibenzotetrakisdehydro[12]- and dibenzopentakisdehydro[14]annulenes

To generate dibenzotetrakisdehydro[12]- and dibenzopentakisdehydro[14]annulenes ([12]- and [14]DBAs) having a highly deformed triyne moiety, [4.3.2]propellatriene-anneleted dehydro[12]- and dehydro[14]annulenes were prepared as their precursors. UV irradiation of the precursors resulted in the photochemical [2 + 2] cycloreversion to generate the strained [12]- and [14]DBAs, respectively. The [12]DBA was not detected by 1H NMR spectroscopy, but it was intercepted as Diels-Alder adducts in solution, suggesting its intermediacy. Its spectroscopic characterization was successfully carried out by UV-vis spectroscopy in a 2-methyltetrahydrofuran (MTHF) glass matrix at 77 K and by FT-IR spectroscopy in an argon matrix at 20 K. On the other hand, the [14]DBA was stable enough for observation by 1H and 13C NMR spectra in solution, though it was not isolated because of the low efficiency of the cycloreversion. The [14]DBA was also characterized by interception as Diels-Alder adducts in solution and by UV-vis spectroscopy in a MTHF glass matrix at 77 K. The kinetic stabilities of the DBAs are compared with the related dehydrobenzoannulenes with respect to the topology of the pi-systems. In addition, the tropicity of the [14]DBA is discussed based on its experimental and theoretical 1H NMR chemical shifts.     

Tetrakisdehydro[14]annuleno[16]annulene

Tetrakisdehydro[14]annuleno[16]annulene consisting of an aromatic bisdehydro[14]-annulene and an antiaromatic trisdehydro[16]annulene has been synthesized. The ¹H NMR parameters clearly indicate the strong paratropicity and diatropicity of the 16-membered and 14-membered rings, respectively.     

新型偶氮杯[4]芳烃的合成与构象研究

使用相应的w-硫醚羧酸酰氯与杯[4]芳烃或者偶氮杯[4]芳烃酰化合成了一类新型的杯[4]芳烃衍生物。分离得到六个新化合物4a-4c和5a-5c，并使用MALDI, EA, ¹H和¹³C NMR进行了表征。NMR图谱表明偶氮杯[4]芳烃衍生物 5a-5c均为1,3-转换构型，而4a-4c则均为锥式构型。对偶氮杯[4]芳烃衍生物5a-5c的红外和紫外性质也进行了研究。     

Solution NMR studies of supramolecular complexes of [60]- and [70]fullerenes with mono O-substituted calix[6]arene

Supramolecular complexation of [60]- and [70]fullerenes with 37-allyl-38,39,40,41,42-pentahydroxy-5,11,17,23,29,35-hexa(4-tert butyl)calix[6]arene (I) has been studied in CCl(4) medium by NMR spectrometric method. All of the complexes are found to be stable with 1:1 stoichiometry. Formation constants (K) of the above supramolecular complexes have been determined from systematic variation of NMR chemical shifts of specific protons of I in the presence of [60]- and [70]fullerenes. Trends in the K value suggest that [70]fullerene binds more strongly with I relative to [60]fullerene. Both PM3 and ab initio calculations reveal that the intermolecular interaction in the [70]fullerene/I complex proceeds through quite deep energy minima.