Copolymerization of 3-methylene-p-menth-4(8)-ene with itaconic and maleic anhydrides

Summary The title monomer was synthesized via a Wittig reaction on pugelone. Free radical initiated homopolymerization was attempted but no polymeric species were produced. Free radical initiated copolymerization of the title monomer with itaconic or maleic anhydride was attempted and low molecular weight polymers were produced in low yield. The copolymers were evaluated in film applications after curing with a diepoxide at elevated temperature.     

聚二(2-甲基-4-羟基-5-叔丁基苯)硫醚的合成

介绍了四步法合成聚二(2 甲基 4 羟基 5 叔丁基苯)硫醚:①以异丁烯和间甲酚为原料,以浓硫酸为催化剂合成3 甲基 6 叔丁基苯酚,并将剩余釜底液继续与间甲酚反应使3 甲基 6 叔丁基苯酚的收率接近100%;②硫磺与氯气反应合成二氯化硫,收率80%以上;③3 甲基 6 叔丁基苯酚与二氯化硫发生缩合反应生成二(2 甲基 4 羟基 5 叔丁基苯)硫醚,采用加入辅助溶剂法收率达到92%;④二(2 甲基 4 羟基 5 叔丁基苯)硫醚同氧气发生氧化偶联反应合成聚二(2 甲基 4 羟基 5 叔丁基苯)硫醚。氧化偶联反应的最佳条件:n〔二(2 甲基 4 羟基 5 叔丁基苯)硫醚〕/n(氧气)=2 5～3 0,n(氯化亚铜)∶n〔二(2 甲基 4 羟基 5 叔丁基苯)硫醚〕=1∶140,n(氯化亚铜)∶n(四甲基乙二胺)=1∶1 3的铜 胺络合物为催化剂,温度50℃,压力0 2MPa,反应时间2～3h,然后减压蒸出溶剂,最后得到淡黄色的聚二(2 甲基 4 羟基 5 叔丁基苯)硫醚,收率>99%。     

(4-咔唑-9-基-苯亚甲基)-(5-咔唑-9-亚甲基-[1,3,4]噻二唑-2-基)-胺的合成与表征

以咔唑、氯乙酸和硫代氨基脲为原料,经亲核取代、闭环反应合成了5-咔唑-9-亚甲基-2-氨基-1,3,4-噻二唑。同时,以咔唑和对氯苯甲醛为原料,在碱性催化剂条件下,在DMF溶液中回流反应得到4-咔唑-9基苯甲醛。两者通过固相研磨的合成方法得到新化合物(4-咔唑-9-基-苯亚甲基)-(5-咔唑-9-亚甲基-[1,3,4]噻二唑-2-基)-胺。通过单因素法对(4-咔唑-9-基-苯亚甲基)-(5-咔唑-9-亚甲基-[1,3,4]噻二唑-2-基)-胺的合成条件进行探讨,确定了合成该化合物的最佳反应条件:反应物物质的量比为1∶1∶1.2,反应时间为20min。其结构经IR、1HNMR、UV-vis和元素分析进行表征。     

全氟(2-亚甲基-4-甲基-1,3-二氧戊环)的制备和应用

总结了全氟(2-亚甲基-4-甲基-1,3-二氧戊环)的制备及其在聚合物和有机合成中的应用。     

A new open-framework zinc arsenate [C4N3H16]2[Zn5(AsO4)4(HAsO4)2]

A three-dimensional zinc arsenate with an interrupted zeolitic framework (?IIO), [C₄N₃H₁₆]₂[Zn₅(AsO₄)₄(HAsO₄)₂], I has been synthesized solvothermally. The structure is built up from ZnO₄, AsO₄ and HAsO₄ tetrahedral units connected alternatively through their vertices forming the 3-D structure possessing one-dimensional channels bound by 10 T-atoms (T = Zn, As). The framework density of the structure is 10.4 T-atoms which indicates considerable openness in its structure.     

Amphiphilic macromolecular nanostructure materials derived from 5-(octanoate methyl)bicyclo[2.2.1]hept-2-ene and 5-(phthalimide methyl)bicyclo[2.2.1]hept-2-ene via ring-opening metathesis copolymerization

Novel highly stable polynorbornenes with self-assembling amphiphilic architecture containing hydrophilic ammonium salt and hydrophobic alkyl ester group were obtained via ring-opening metathesis polymerization (ROMP) of 5-(octanoate methyl)bicyclo[2.2.1]hept-2-ene (NBMO) and 5-(phthalimide methyl)bicyclo[2.2.1]hept-2-ene (NBMPI), hydrogenation, hydrazinolysis, and subsequent quaternization. Polymeric micelles of such amphiphilic random and block polynorbornenes formed in solvents by varying the content of ammonium salts were investigated. Amphiphilic block copolymers exhibited perfect spherical morphology. Nanoscale polymeric micelles of random copolymers with 50-75 mol% of ammonium salts were roughly spherical in shape, while the morphologies of micelles transferred into network-like aggregates as hydrophilic contents of the random copolymers are higher than 80 mol%. The formation and fine structures of micelles were investigated by dynamic light scattering (DLS), TEM, and fluorescence technique using pyrene as fluorescence probe.     

Cationic oligomerization of 3-methyl-1-butene catalyzed by BF3-protonic donor complexes

Summary The oligomerization of 3-methyl-1-butene was carried out in the presen ce, as catalysts, of BF₃ complexes with different protonic donors (CH₃OH, H₂O, CH₃CH₂COOH, H₃PO₄)³ in a 11 molar composition. By working in n-hexane solution at temperatures between 0 and 70°C only unsaturated low MW oligomers (dimers to hexamers) were obtained. Each oligomer was a complex mixture of isomeric olefins as revealed by GLC and GLC-MS analysis. The presence of some fragmentation products containing one carbon atom more or less than the oligomer was pointed out.The results obtained show that the MW of the oligomers decreases by in creasing the acidity of the protonic donor used as complexing agent of BF₃. By increasing the temperature a decrease of the MW and an increase of the presence of fragmentation products was obtained.     

3-(5-芳基-[1,3,4]噁二唑-2-亚甲硫基)-5-(4-硝基吡咯)-2-基-4-芳基-[1,2,4]三唑的合成及抗菌活性

用3-(4-硝基吡咯)-2-基-4-芳基-1,2,4-三唑-5-硫醇与5-芳基-2-氯甲基-1,3,4-二唑缩合,得到10个新型多杂环化合物。其结构经元素分析、IR、MS及~1HNMR确证。研究了目标化合物的体外抗菌活性(MIC和IC_(50))。结果显示,化合物3-(5-对氯苯基-[1,3,4]二唑-2-亚甲硫基)-5-(4-硝基吡咯)-2-基-4-苯基-[1,2,4]三唑和3-(5-对氯苯基-[1,3,4]二唑-2-亚甲硫基)-5-(4-硝基吡咯)-2-基-4-对甲基苯基-[1,2,4]三唑表现出一定的体外抗菌活性,含硝基吡咯环的二唑多杂环类化合物有可能成为新型结构的抗菌药物。     

2-氨基-6甲基-4-丙基-4H-[1，2，4]三氮唑-[1，5-a]嘧啶-5-酮的合成

MMA经溴化加成、醚化、催化裂化制得双甲醋；单氰胺与二硫化碳在碱性条件下缩合、甲基化制备二氰醋，后与正丙胺缩合再与水合肼环合，丙三唑与苯甲醛醛缩；醛缩物在缚酸剂下与双甲醋催化闭环生成环合物。再在盐酸中水解去醛基得三唑嘧啶酮成品。分别选择car1#、cat2#为裂解和闭环催化剂，反应收率分别达91．59％，91．98％，91．1％，86．6％，69．7％，总收率46．32％，产品纯度99．53％。     

有机模板硼酸盐[C2H8N][B5O6(OH)4]的合成及发光性能研究

以二甲胺和硼酸为原料,通过水热反应合成有机模板硼酸盐[C2H8N][B5O6 (OH)4],通过单晶X射线衍射对其晶体结构进行分析,该晶体属于单斜晶系,空间群为C2/c,晶胞参数为a=1.3381(75) nm,b=1.1468(56)nm,c=1.7137(92) nm,α=90.032(64)°,β=112.292(82)°,γ=89.988(85)°,V=2.433(2.000) nm3.粉末衍射(PXRD),红外(IR),热重(TGA)以及荧光(PL)等手段对其晶体进行分析表征.在不同温度下对该物质进行热处理,观察其IR和PXRD的变化判断其内部的结构是否能够保持稳定,并通过热重分析进行补充说明.荧光光谱结果表明在经过不同温度热处理后,该物质的发光特性发生明显的变化.实验证实[C2H8N] [B5O6(OH)4]一种可能用在白光LED上的荧光粉.     

3-甲基-4-对甲苯基-5-（2-吡啶基）-1，2，4-三唑的合成和表征

1,2,4-三唑类化合物在农药、医药及化工领域有着广泛的应用,其与-些金属离子形成的配合物具有自旋转换功能。为了制备研究新的具有自旋转换功能的1,2,4-三唑配合物,以a-吡啶甲酸为原料,经多步反应合成3-甲基-4-对甲苯基-5-（2-吡啶基）-1,2,4-三唑,并用IR、MS、^1H—NMR对其结构进行了确证。     

甲基三环癸烯醚合成技术的研究

用浓H2SO4做催化剂,以双环戊二烯和甲醇为原料合成甲基三环癸烯醚。讨论了原料加入次序和比例、反应时间和温度、催化剂中和脱除方法对产品收率的影响,优惠合成条件为:n(H2SO4):n(双环戊二烯):n(CH3OH)约为1∶5∶15,反应温度以溶液回流温度为宜,以溶液能沉入水底或回流温度110℃左右为终点。用三乙胺或吡啶中和脱除H2SO4催化剂,蒸馏收集220~230℃馏分,产品收率高于83%。     

6,7-二氢-6-甲基-3-甲硫基吡喃[4,3-c]吡唑-4-(2H)-酮衍生物的合成及生物活性

6-甲基-5,6-二氢吡喃-2,4-二酮和二硫化碳、碘甲烷缩合得到5,6-二氢吡喃-2,4-二酮的二硫缩醛化合物,然后和取代肼反应得到1位取代和2位取代6,7-二氢-6-甲基-3-甲硫基吡喃[4,3-c]吡唑-4-(2H)-酮衍生物。其化学结构通过单晶X衍射、1HNMR、13CNMR、元素分析证实。生物活性测试结果初步表明,该类化合物表现出一定的杀菌和对前列腺癌细胞PC3的抑制活性。     

Two types of tetrasubstitution in [H4Ru4(CO)12]: spectroscopic characterization and crystal structure determination of [H4Ru4(CO)8(PMe2Ph)4] and [H2Ru4(CO)9(PMe2Ph)4]

Two tetrasubstituted tetranuclear ruthenium clusters containing dimethylphenylphosphine [H₄Ru₄(CO)₈(PMe₂Ph)₄] and [H₂Ru₄(CO)₉(PMe₂Ph)₄] were prepared and characterized spectroscopically as well as by X-ray crystallography. Both compounds show a structure based on the usual 60-electron tetrahedral framework with each ruthenium atom being bonded to one phosphine ligand. In the case of the nonacarbonyl derivative, one of the ruthenium atoms has one terminal carbonyl group and is also bonded to two semibridging carbonyl groups; two other metal–metal bonds are bridged by the hydride groups. In the case of the octacarbonyl compound all the ruthenium atoms are bonded to two terminal carbonyls and to two bridging hydrides. NMR spectroscopical information of [H₄Ru₄(CO)₈(PMe₂Ph)₄] suggests the presence of two isomers in solution which we propose to have D_2d and C_s symmetries. The observation of the NMR properties gives some observations about conditions that favour coupling between substituents in different ruthenium atoms.     

5-苄氧基-2-(4-苄氧基苯基)-3-甲基-1H-吲哚的合成研究

以4-硝基苯酚、1-(4-羟基苯基)-1-丙酮为起始原料,经过羟基保护、还原、溴代、BischlerM觟hlau吲哚合成法等反应合成了5-苄氧基-2-(4-苄氧基苯基)-3-甲基-1H-吲哚。该路线原料廉价易得、操作简单、副反应少,收率接近50%,具有较好的应用前景。     

3-(4-氟苄基)-8-羟基-1,2,3,4-四氢苯并吡喃[3,4-c]吡啶-5-酮的合成

以间苯二酚和4-酮-3-甲酸甲酯吡啶盐酸盐为原料,通过两步反应,合成了标题化合物,并对其进行了表征。     

Pyrazolonderivate. III. [2] Ein Beitrag zur Stereochemie von N,N-disubstituierten 4-Aminomethylen-3-methyl-1-phenyl-Δ2-pyrazolinonen-(5)

Pyrazolone Derivatives. III. A Contribution to Stereochemistry of N, N-Disubstituted 4-Aminomethylene-3-methyl-1-phenyl-Δ²-pyrazolinones-(5) The N,N-disubstituted 4-aminomethylene-Δ²-pyrazolinones-(5) 1 and 2 show a hindered internal rotation around the bond indicating a considerable polarisation of the system. This assumption is supported by i.r.-spectroscopic measurements which show that the CO-bond order decreases with increasing solvent polarity. Compounds 1 and 2 exist in the Z-configuration relative to the exocyclic CC-double bond. That can be attributed to a steric hindrance in the E-configuration of the aminomethylene-substituents with the methyl-group at the pyrazolone-ring.     

新型阳离子光引发剂[4-（2-羟基-3-丁氧基-1-丙氧基）苯基]苯碘鎓-六氟锑酸盐的合成及光敏性能的研究

以丁基缩水甘油醚和苯酚为起始原料,进行开环缩合反应制得1-丁氧基-3-苯氧基丙-2-醇．再与羟基对甲苯磺酰氧基苯反应得到[4-(2-羟基-3-丁氧基 -1-丙氧基)]二苯碘鎓-六氟锑酸盐(简称BPI·SbF6),产率达79％．用1HNMR、 UV、IR和元素分析对其结构进行了分析．初步研究了以BPI·SbF6为阳离子光引发剂的脂肪族环氧(CY179)感光体系的感光特性,结果表明CY179／BPI· SbF6感光体系有一定的后固化活性．     

2-烷氨基-3-对氟苯基-5-甲基-6-(1H-1,2,4-三唑-1-基)-噻吩并[2,3-d]嘧啶-4(3H)-酮衍生物的合成及其杀菌活性

已见含氟类有机物具有杀菌能力的报道,将氟元素引入到噻吩并嘧啶酮的衍生物之中,考查其杀菌活性。通过Gewald反应生成噻吩,产物同PPh3、C2Cl6、Et3N作用得到膦亚胺,再用对氟苯基异氰酸酯与之作用得到碳二亚胺,之后与伯胺反应得到10种新的标题化合物,其结构经1HNMR、MS和元素分析表征。生物活性测试表明,此类衍生物对常见农作物部分菌体均表现出较大的抑制作用,其中以2-正庚氨基-3-对氟苯基-5-甲基-6-(1H-1,2,4-三唑-1-基)-噻吩并[2,3-d]嘧啶-4(3H)-酮活性最好,它对棉花枯萎菌的抑制率达90%。该系列物质相对不含氟元素的同种取代基的噻吩并嘧啶酮衍生物的杀菌活性有一定程度的提高。