一种新型二胺类空穴传输材料和NPB的合成及表征

以N-苯基-1-萘胺和对溴碘苯为起始原料,经Buchwald-Hartwing偶联反应合成有机发光二极管空穴传输材料N,N′-二[4-(1-萘基苯基氨基)苯基]-N,N′-二苯基-[1,1′-联苯]-4,4′-二胺(2)。以1-溴化萘(1-溴萘)为初始原料与N,N′-二苯基联苯二胺经Buchwald-Hartwing偶联合成了N,N′-[二(1-萘基)-N,N′-二苯基]-1,1′-联苯基)-4,4′-二胺(NPB)。利用~1HNMR、LC-MS等对产品结构进行表征。通过差示扫描量热仪(DSC)测得化合物2和NPB失重5%的温度分别为510℃和491℃,化合物2的玻璃化转变温度Tg为126℃,化合物2和NPB的升华温度分别为395℃和290℃,并通过UV-Vis紫外吸收光谱、荧光光谱研究了两种传输材料的光学性质。     

手性联萘二甲酸的合成

以2-萘酚和80%水合肼为起始原料,经3步反应生成光学活性的2,2’-二胺-1,1’-联萘,该对映体再依次经过溴代、锂化及羧基化反应制备得到了手性1,1’-联萘-2,2’-二甲酸,收率为68.4%(以2,2’-二溴-1,1’-联萘计),光学纯度为84%。各步产物的结构经1H NMR、13C NMR得到确证。该反应原料价廉易得,整个操作过程简单安全,具有一定的应用研究价值。     

2-溴-3-甲基-1,4-二甲氧基萘的合成

以2-甲基萘醌为原料,经过催化氢化、甲醚化和溴化3步反应,合成了维生素K2的重要中间体2-溴-3-甲基-1,4-二甲氧基萘(1)。以钯碳为催化剂加氢还原,得到了2-甲基-1,4-二羟基萘(3),收率98.8%;3在碱性条件下用硫酸二甲酯进行甲氧基保护,生成2-甲基-1,4-二甲氧基萘(4),收率95.1%;4与溴反应可以得到1,收率90.1%。3步反应总收率由传统方法的48.7%提高到84.6%。     

2-溴-3-甲基-1,4-二甲氧基萘的合成新方法研究

以2-甲基萘醌(2)为原料,经过催化氢化、甲醚化和溴代三步反应,合成了维生素K2的重要中间体2-溴-3-甲基-1,4-二甲氧基萘(1)。(2)催化加氢还原得到2-甲基-1,4-二羟基萘(3)。(3与硫酸二甲酯反应生成2-甲基-1,4-二甲氧基萘(4),甲醚化反应通过正交实验可使产物收率达到95.1%;(4)与溴反应,经单因素实验在较佳的反应工艺条件下得到目标产物(1),收率90.1%。三步反应总收率达到84.6%。     

(S)-BINAM衍生的新型吡啶-硫脲双功能有机催化剂的合成

新型吡啶-硫脲双功能有机催化剂(Ⅳ),由(S)-1,1-联二萘胺(Ⅰ)和2-溴吡啶在80℃条件下经BuchwaldHartwig偶联反应,以60%的收率得到中间体(Ⅱ);随后以吡啶为缚酸剂,三氟乙胺、硫代氯甲酸-4-硝基苯酯在二氯甲烷中于室温下反应10 min,向反应体系中加入中间体(Ⅱ)及DIPEA继续于室温下反应12 h,即可以70%的收率获得催化剂(Ⅳ)。其结构经1H NMR和13C NMR进行了表征。     

(S)-BINAM衍生的新型吡啶-硫脲双功能有机催化剂的合成

新型吡啶-硫脲双功能有机催化剂(Ⅳ),由(S)-1,1-联二萘胺(Ⅰ)和2-溴吡啶在80℃条件下经BuchwaldHartwig偶联反应,以60%的收率得到中间体(Ⅱ);随后以吡啶为缚酸剂,三氟乙胺、硫代氯甲酸-4-硝基苯酯在二氯甲烷中于室温下反应10 min,向反应体系中加入中间体(Ⅱ)及DIPEA继续于室温下反应12 h,即可以70%的收率获得催化剂(Ⅳ)。其结构经1H NMR和13C NMR进行了表征。     

重氮化法(用胺盐形式)制备偶氮萘

2,2′—偶氮萘为一种重要的抗氧剂和光敏剂,并且经还原、重排得2,2′—二氨基1,1′—联萘,该化合物是研究立体活性染料及轴不对称合成的重要试剂。如以β—萘胺为原料,经重氮化、Na_2SO_3还原得偶氮萘。但由于β—萘胺在盐酸—硫酸体系中的水溶性甚差,按文献报导方法仅得10％产率。我们改用胺盐形式     

8种新型7胺-基取代的1,4二-氢-3H-2,3苯-并噁嗪-3甲-酸乙酯衍生物的合成

1,4二-氢-3H-2,3苯-并口恶嗪-3甲-酸乙酯经过硝化、还原和重氮化溴代得到了7溴--1,4二-氢-3H-2,3苯-并口恶嗪-3甲-酸乙酯(C)。以Pd(OAc)2/R(+)B INAP(2,2′-二苯膦-1,1′-联萘)为催化体系,C与苯胺、N-甲基苯胺、对氟苯胺、对乙氧基苯胺、环己胺、吗啡、四氢吡咯及六氢吡啶等8种有机胺类化合物(Am ine1~8),在氮气保护下,以碳酸铯为碱于干燥的甲苯中100℃反应16~24 h,生成了相应的8种新的7胺-基取代的1,4二-氢-3H-2,3苯-并口恶嗪-3甲-酸乙酯类化合物(D1~8),反应收率分别为83%、85%、71%、90%、72%、63%、75%和83%。通过1HNMR、质谱和元素分析对这些化合物的结构进行了表征。     

3,6-二(吡啶-2-基)-1,2,4,5-四嗪的合成及应用

以2-氰基吡啶和水合肼为原料,经过Pinner反应和氧化反应合成得到3,6-二(吡啶-2-基)-1,2,4,5-四嗪(化合物1),收率为88.6%。对影响产物收率的因素进行了考察,确定了第二步氧化反应的反应温度为0℃,反应时间1.0h。化合物1分别与6,7-二溴-1,4-二氢-1,4-环氧萘(化合物4a)和6,7-二甲氧基-1,4-二氢-1,4-环氧萘(化合物4b)反应得到5,6-二溴异苯并呋喃(化合物5a)和5,6-二甲氧基异苯并呋喃(化合物5b)的收率分别为51.3%和48.5%。化合物1和化合物5a以及化合物5b的结构均采用~1H-NMR和ESI-MS进行了表征。     

(R)-(+)-2,2’-双[二(3,5-二甲苯基)膦]-1,1’-联萘的合成

三溴化磷为原料,与二(3,5-二甲基苯基)氧化膦反应,得到二(3,5-二甲基苯基)溴化膦,通过催化偶联反应,得到(R)-(+)-2,2’-双[二(3,5-二甲苯基)膦]-1,1’-联萘。通过考察各步的反应条件,得出最佳的工艺条件,(R)-(+)-2,2’-双[二(3,5-二甲苯基)膦]-1,1’-联萘的收率可达67%,e.e.值为99.2%。     

Untersuchungen zur stereoselektiven elektrophilen Cyanierung

Studies on Stereoselective Electrophiic Cyanation The enantioselective, electrophilic cyanation of the enolates of 2-substituted 1-tetralones 3 is described. Enantiomerically pure 2-cyanato-1,1′-binaphthyl derivatives 2, 6a and b are used as cyanating agents. The influence of solvent, temperature, additives and the method of enolate formation are investigated. Best results are obtained with 48% ee in the case of compound 2 and 60% ee in the case of compound 6b if the enolate is prepared from the corresponding silyl enol ether 7 and Toluene is used as solvent.     

A Parametric Study of the Synthesis of 4,4′,5,5′,7,7′-Hexanitro-1,1′-Binaphthyl

Conditions for the synthesis of 4,4′,5,5′,7,7′-hexanitrobinaphthyl( I ) from 1,1′-binaphthyl have been investigated. It has been found that( I ) can be prepared in 50% yield in a two-stage nitration process.     

Synthesis and characterization of optically active helical poly(α, β-unsaturated ketone) with bulky pendant of binaphthyl

The synthesis and chiroptical properties of a novel optically active helical polymers, poly[(S)-6-acryloyl-2,2′-bisalkoxy-1,1′-binaphthyl] (poly-3), were reported. All the monomers readily underwent anionic polymerization to yield the polymers displaying optical rotations and Cotton effects in the UV–vis absorption region of side groups distinct to monomers (3) and the corresponding model compounds such as (S)-6-propionyl-2,2′-bisalkoxy-1,1′-binaphthyl (4) and (S)-6-heptanoyl-2,2′-bisalkoxy-1,1′-binaphthyl (5), implying the formation of main-chain chirality, most probable helicity. Their helical conformations were quite stable as revealed by the almost unchanged chiroptical properties measured at different temperatures.     

三芳胺类空穴传输材料的合成及光电性能

以3,5-二甲基苯胺为原料与苯磺酸钠反应合成了3,5-二甲基二苯胺,研究了反应温度、时间以及反应物配比对收率的影响,确定了最佳工艺条件。再以3,5-二甲基二苯胺与4,4'-二碘联苯通过Ullmann缩合反应合成了空穴传输材料N,N′-双(3,5-二甲基苯基)-N,N′-二苯基-1,1′-联苯-4,4′-二胺,产品收率为82.24%,经提纯,产品纯度可达99.31%。对该化合物进行的光电测试结果表明,其具有优异的空穴传输性能。     

Reactions of Binaphthyls in Tetrachloroaluminate Molten Salts

The two symmetric binaphthyls (1,1″- and 2,2″-binaphthyl) were synthesized by Grignard coupling reactions of 1-bromonaphthalene and 2-bromonaphthalene, respectively, using two different promoters (Ni(acac)₂ and 1,4-dichloro-2-butene). The non-symmetric 1,2″-binaphthyl was prepared via two methods: (1) coupling of 2-naphthylmagnesium bromide with 1-tetralone, followed by dehydration, then sulfur-catalyzed dehydrogenation and (2) a Kharash-type Grignard coupling between 1-naphthylmagnesium bromide and 2-bromonaphthalene, with Ni(acac)₂ as the promoter. The binaphthyls were exposed to room-and high-temperature tetrachloroaluminate molten salts of differing composition. 1,1″-Binaphthyl and 1,2″-binaphthyl isomerized to 2,2″-binaphthyl in the room temperature molten salts, whereas 2,2″-binaphthyl was unchanged. In molten salts at temperatures in excess of 75?, each of the binaphthyls underwent cyclodehydrogenation to form perylene and small amounts of benzofluoranthenes.     

2,2′-二羟基-1,1′-联萘合成方法综述

综述了 2 ,2′ 二羟基 1,1′ 联萘 (联萘酚 )的合成方法 ,包括外消旋体的合成以及手性合成。参考文献 5 1篇     

N,N′-二茂铁二甲酰氨基葡萄糖的合成

报道了以具有抗癌和抗艾滋病毒活性的β-D-氨基葡萄糖与二茂铁二甲酸作起始原料合成一种糖/金属有机化合物——N,N′-二茂铁二甲酰氨基葡萄糖的方法。第一步,将氨基葡萄糖用苯甲醛保护氨基后,用乙酸酐再保护羟基,然后在加有盐酸的丙酮中去氨基保护,得1,3,4,6-四-O-乙酰基-β-D-氨基葡萄糖盐酸盐;将二茂铁二甲酸与草酰氯在干燥的二氯甲烷中反应得到二茂铁二甲酰氯。第二步,将第一步所得的两个中间产物,在室温下加入干燥的二氯甲烷和苯的混合溶剂中,在三乙胺存在下进行反应,得目标产物,收率35.7%,系红棕色固体,熔点198~200℃。目标化合物是具有双药效基团的物质。用元素分析,红外光谱和核磁共振波谱进行了表征。     

制备手性联萘二甲酸的工艺改进

从手性联萘酚原料出发,通过3步反应合成标题化合物,总收率62%,产品光学纯度>99%。其中关键反应手性2,2’-二(三氟甲磺酸基)-1,1’-联萘与CO的直接羰基化反应,经过条件优化,可使用CO气袋完成,避免了昂贵的高压反应设备的使用。各步反应操作简便,条件温和,适合工业化生产。     

Synthesis,structure, and catalytic activity of group 4 complexes with new chiral binaphthyldiamine-based ligands

Five group 4 metal complexes (1)₂Zr(NMe₂)₂ (5), (2)₂Ti(NMe₂)₂ (6), (2)₂Zr(NMe₂)₂ (7), (3)₂Zr (8) and (4)₂Ti(NMe₂)₂ (9) have been readily prepared from the reaction between M(NMe₂)₄ (M = Ti, Zr) and chiral binaphthyldiamine-based ligands, (R)-2,2′-bis(diphenylthiophosphoramino)-1,1′-binaphthyl (1H₂), (R)-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-bis(diphenylthiophosphoramino)-1,1′-binaphthyl (2H₂), (R)-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-bis(methanesulphonylamino)-1,1′-binaphthyl (3H₂), and C₁-symmetric ligand, (R)-2-(mesitylenesulphonylamino)-2′-(dimethylamino)-1,1′-binaphthyl (4H). All the complexes have been characterized by various spectroscopic techniques, elemental analyses and X-ray diffraction analyses. The zirconium amides are active catalysts for the asymmetric hydroamination/cyclization of aminoalkenes, affording cyclic amines in good yields with moderate ee (enantiomeric excess) values.     

Highly Regioselective and Active Rhodium/Bisphosphite Catalytic System for Isomerization–Hydroformylation of 2-Butene

Abstract  

The formation of linear aldehyde from isomerization–hydroformylation of 2-butene represents an important subject and current task in industry. Both high activity and excellent regioselectivity were achieved in the rhodium-catalyzed 2-butene isomerization–hydroformylation with 2,2′-bis(dipyrrolylphosphinooxy)-1,1′-(±)-binaphthyl (1) as ligand. Bulky phosphite with electron-withdrawing pyrrol groups dramatically improved the selectivity of linear product, and a good yield of 90.5% aldehydes was obtained with an excellent linear aldehyde regioselectivity of 95.3% under optimized condition.