双二茂铁基烷酰化衍生物的还原反应

二茂铁甲烷,2,2-双二茂铁丙烷,2,2-双二茂铁基丁烷,2,2-双二茂铁基戊烷与乙酸酐、丙酸酐、正丁酸酐通过傅氏酰基化反应生成一系列双二茂铁基烷的酰化衍生物,再经LiAlH_4还原得到318个相应的α-羟基双二茂铁烷衍生物。文中并对它们的红外光谱和~1H NMR谱性质进行了研究。     

双（甲基二茂铁基）代烷羟的合成

二茂铁衍生物在复合固体火箭推进剂中用作燃速催化剂,但其挥发性和迁移性较大,直接影响储存或使用时导弹的弹导性能。本文报导三种新型燃速催化剂:双(甲基二茂铁基)甲烷,2,2-双(甲基二茂铁基)丙烷和2,2-双(甲基二茂铁基)丁烷的合成和表征。小型试验表明其催化活性、挥发性及迁移性能均优于国内目前使用的叔丁基二茂铁。     

2-单核和双核茂铁基-1,3-二烷基苯并咪唑盐的合成、结构及性质研究

以2-二茂铁基苯并咪唑(2)为原料,合成了1-甲基-2-二茂铁基-3-乙基苯并咪唑碘盐(4)和六氟磷酸盐(5);甲酰化的2,2-双二茂铁基丙烷(6)与邻苯二胺在甲醇作溶剂,回流,碘催化下反应,得到2-[1’-(2-二茂铁基丙烷-2-基)二茂铁-1-基]苯并咪唑(7),以7为原料合成了1-甲基-2-[1’-(2-二茂铁基丙烷-2-基)二茂铁-1-基]-3-乙基苯并咪唑碘盐(9)和六氟磷酸盐(10).电化学分析表明所得的盐化合物中,与苯并咪唑阳离子直接相连的二茂铁的氧化电位相对2和7均产生了较大正移.对化合物4的单晶结构进行了解析,晶体结构中存在π-π堆积.UV-Vis吸收光谱表明所得盐化合物具有光致电荷迁移现象.DSC-TG(差示扫描量热-热重)测试表明碘盐4对高氯酸铵(AP)热分解有较好催化效果.     

螯合物(FcCOCHCOCH3)2Cu与(FcCOCHCOCH3)3Fe的合成及其燃烧催化活性

含有铁、铬、铜等过渡元素的一些化合物,如铁的氧化物、铜的亚铬酸盐、二茂铁及其衍生物等都可作为复合固体推进剂的燃速催化剂.在二茂铁衍生物中主要是烷基衍生物,如叔丁基二茂铁、正辛基二茂铁、γ-二茂铁丁酸丁酯以及1,7-二(二茂铁基)庚烷、2,2-双(乙基二茂铁基)丙烷等.上述催化剂的变化趋势是由单二茂铁基向双二茂铁基发展,     

双(烷基二茂铁基)丙烷的合成及其燃速催化性质

双(烷基二茂铁基)丙烷的合成及其燃速催化性质;二茂铁衍生物;燃速催化剂     

新型1,1-双二茂铁基丁烷衍生物的合成

1,1-双二茂铁基丁烷和乙酸酐经Friedel-Crafts酰基化反应得6-乙酰基-1,1-双二茂铁基丁烷(2);2经LiAlH4还原得6-α-羟乙基-1,1-双二茂铁基丁烷(3);3经消除反应合成了6-乙烯基-1,1-双二茂铁基丁烷(4)。2~4为新化合物,其结构经1H NMR,IR,MS和元素分析表征。     

二茂铁-噻吩和联噻吩桥连吡啶盐类化合物的合成与电化学性质

设计并合成了3个二取代和三取代的二茂铁-噻吩、二茂铁-联噻吩吡啶盐类化合物： 碘化(E,E)-N-甲基-2,4,6-三{2-[5-(2-二茂铁乙烯基)噻吩-2-基]乙烯基}吡啶盐、 碘化(E,E)-N-甲基-2,6-二{2-[5’-(2-二茂铁乙烯基)-2,2’-联噻吩-5-基]乙烯基}吡啶盐、碘化(E,E)-N-甲基-2,4,6-三{2-[5’-(2-二茂铁乙烯基)-2,2’-联噻吩-5-基]乙烯基}吡啶盐。初步研究了这些化合物的电化学性质,结果表明,该类多取代二茂铁吡啶盐具有很好的氧化-还原可逆性,是潜在的电化学分子材料。     

1，1-双二茂铁基烷的合成与表征

1;1-双二茂铁基烷的合成与表征;缩合;双二茂铁基烷;合成;表征     

(S)-(+)-2,2-二甲基环丙烷甲酰胺的不对称合成

以环己二胺作为手性源,与3,5-二叔丁基水杨醛经缩合反应制得Salen配体(R,R)-N,N'-二(3,5-二叔丁基水杨醛)-1,2-环己二胺(6);甘氨酸乙酯盐酸盐经重氮化和6与三氟甲烷磺酸亚铜催化的不对称环丙烷化反应制得(S)-(+)-2,2-二甲基环丙烷甲酸乙酯(9);9经水解、酰氯化和氨解反应合成了(S)-(+)-2,2-二甲基环丙烷甲酰胺,ee值82%,总收率55.4%,其结构经1H NMR和IR确证。     

2,2'-二[对-(β-羟基-乙氧基-)苯基]丙烷双甲基丙烯酸酯合成与纯化

以双酚A和氯乙醇为原料经Williamson反应制得中间体2,2'-二[对-(β-羟基-乙氧基-)苯基]丙烷,再以对甲基苯磺酸为催化剂、以对羟基苯甲醚为阻聚剂在减压条件下通过直接酯化法制备2,2′-二[对-(β-羟基-乙氧基-)苯基]丙烷双甲基丙烯酸酯.时终产物脱色纯化工艺也做了初步的探索.     

二氯菊酸类杀虫剂光学纯度分析方法的研究

报道了旋光性的顺式－2，2－二甲基－3－（2，2－二氯乙烯基）环丙烷羧酸（谷称顺式二氯菊酸）类杀虫剂光学纯度的色谱分析方法。光学活性杀虫剂的顺式－2，2－二甲基－3－（2，2－二氯乙烯基）环丙烷羧酸先与氯化亚砜生成酰氯，一财与S（－）－a-甲基苄胺作用，生成顺式－2，2－二氯－3－异丁烯基环丙烷羧酸非对映异构体的酰胺，经薄层色谱纯，用高效液相色谱进行分析，即可确定中间体的光学纯度。光学纯度一定的中间体经合成至最终产物，其光学纯度保持不变。     

Di-6R,7R1-4(3H)-Oxo-2-quinazolinyl-substituted Cyclobutanes from Pinic and sym-Homopinic Acids

The corresponding diamides were obtained from reaction of cis-3-carboxy-2,2-dimethylcyclobutylacetic acid (pinic acid) and of cis/trans-3-(carboxymethyl)-2,2-dimethylcyclobutylacetic acid (homopinic acid) dichlorides with two equivalents of 5-bromo-, 4-chloro-, and 4,5-dimethoxyanthranilic acids. Treatment of them with formamide leads to the formation of the corresponding 2,2-dimethyl-3-[4(3H)-oxo-2-quinazolinyl]methyl-1-[4(3H)-oxo-2-quinazolinyl]cyclobutanes and 2,2-dimethyl-1,3-di[4(3H)-oxo-2-quinazolinylmethyl]cyclobutanes.     

New Heteroaromatic Complexing Agents and Luminescence of Their Europium(III) and Terbium(III) Chelates

Twelve heteroaromatic complexing agents 9a–I were synthesized with the purpose to develop suitable labels for time-resolved luminescence-based bioaffinity assays. The relative luminescence yields, excitation maxima, and emission decay constants of their europium(III) and terbium(III) chelates were determined. According to these results, 2,2′,2″,2?-[(2,2′-bipyridine-6,6′-diyl)bis(methylenenitrilo)]tetrakis (acetic acid) ( 9e ) and 2,2′,2″,2?-[(2,2′:6′,2″-terpyridine-6,6″-diyl)bis(methylenenitrilo)] tetrakis(acetic acid) ( 91 ) are the most promising agents.     

The use of redox reactions in the analysis of dyes and dye production intermediates: V. A reductometric and polarographic determination of 4,4′-dinitrostilbene-2,2′-disulfonic acid

The chemical reduction of 4,4′-dinitrostilbene-2,2′-disulfonic acid with titanium(III) chloride, chromium(II) sulfate, and vanadium(II) sulfate and the polarographic reduction of 4,4′-dinitrostilbene-2,2′-disulfonic acid were studied. Conditions for analytical use of these reactions were found.     

A Suzuki coupling based route to 2,2'-bis(2-indenyl)biphenyl derivatives.

Because of the promising performance in olefin polymerization of 2,2'-bis(2-indenyldiyl)biphenyl zirconium dichloride, we developed a new and broadly applicable route to 2,2'-bis(2-indenyl)biphenyl derivatives. Reaction of the known 2,2'-diiodobiphenyl (26) with the new 2-indenyl boronic acid (23) did not result in the desired 2,2'-bis(2-indenyl)biphenyl (10); instead an isomer thereof, (spiro-1,1-(2,2'-biphenyl)-2-(2-indenyl)indane) (27), was obtained. It was found that compound 10 could be made via a palladium-catalyzed reaction of 2,2-biphenyldiboronic acid (31) with 2-bromoindene (21) under standard Suzuki reaction conditions. However, the yield of this reaction was low at low palladium catalyst loadings, due to a competitive hydrolysis reaction of 2,2-biphenyldiboronic acid (31). HTE techniques were used to find an economically viable protocol. Thus, use of the commercially available 1.0 molar solution of (n-Bu)(4)NOH in methanol with cosolvent toluene led to precipitation of the pure product in a fast and clean reaction, using only 0.7 mol % (0.35 mol % per C-C) of the expensive palladium catalyst.     

Di-4(3H)-quinazolinon-2-yl Derivatives from the Diacid Chlorides of Pinic and sym-Homopinic Acids

The corresponding diamides have been synthesized by the interaction of the diacid chlorides of cis-2,2-dimethyl-3-carboxycyclobutaneacetic acid (pinic acid) and cis-2,2-dimethylcyclobutane-1,3-diacetic acid (sym-homopinic acid) with two equivalents of anthranilic acid. Treatment of the diamides with formamide gave 2,2-dimethyl-1-[4(3H)-quinazolinon-2-yl]methyl-3-[4(3H)-quinazolinon-2-yl]cyclobutane and 2,2-dimethyl-1,3-di[4(3H)-quinazolinon-2-ylmethyl]cyclobutane respectively.     

Suzuki arylation at positions 2 and 2 of 1,1-binaphthyls: stereochemical result depending on the sense of polarity of substrates

The first preparation of enantiomerically pure 1,1^′-binaphthyl-2,2^′-diboronic acid (by resolution) is reported. Optimization of the cross-coupling conditions was found to be crucial to achieve good yields in Suzuki arylation in approaches from both 2,2^′-diiodide or 2,2^′-diboronic acid (52-56%, with model p-tolyl reagents). Stereochemical results in these reactions were dramatically different: almost complete racemization starting from the 2,2^′-diiodide versus complete conservation of stereogenic information from the 2,2^′-diboronic acid. This novel synthetic approach, a stereoconservative Suzuki arylation of the diboronic acid, should be a valuable method for the synthesis of a new group of 2,2^′-diarylated (including functionalized) binaphthyl derivatives.     

蒎酮酸的卤代反应

国外对蒎酮酸的制备、反应及其衍生物的应用报道颇多。为了开发利用我国丰富的松节油资源,我们对顺式蒎酮酸(1)的卤代反应进行了研究。关于蒎酮酸的溴代反应已有研究,而氯代反应还未见报道。我们选用了氯气和氯化硫酰作为氯代反应试剂。在酸性条件下1与氯反应时,得到顺式-2,2-二甲基-3-氯乙酰基环     

Oxidation of 3-(2,2-Dialkylhydrazino)- 1,1,2,2-tetracyano-5-R-cyclopentanes

Oxidation of 3-(2,2-dialkylhydrazino)-1,1,2,2-tetracyano-5-R-cyclopentanes were converted into 3-(2,2-dialkylhydrazono)-1,1,2,2-tetracyano-5-R-cyclopentanes by treatment with potassium permanganate in a sulfuric acid or acetic acid solution and into 1-dialkylamino-5,5,6,6-tetracyano-4-R-piperidin-2-ones by treatment with nascent HOCl or HOBr.     

Chromium(VI) oxide-mediated oxidation of polyalkyl-polypyridines to polypyridine-polycarboxylic acids with periodic acid

4,4′-Dicarboxy-2,2′-bipyridine was synthesized quantitatively by chromium(VI) oxide-mediated oxidation of 4,4′-dimethyl-2,2′-bipyridine or 4,4′-diethyl-2,2′-bipyridine with periodic acid as the terminal oxidant in sulfuric acid. 5,5′-Dicarboxy-2,2′-bipyridine and 6,6’-dicarboxy-2,2′-bipyridine were also synthesized by the method from the corresponding dimethyl bipyridines in excellent yields. 4,4′,4″-Tricarboxy-2,2′:6′,2″-terpyridine was obtained in 80% yield from 4,4′,4″-triethyl-2,2′:6′,2″-terpyridine, and 4,4′,4″,4′″-tetracarboxy-2,2′:6′,2″:6″,2′″-quaterpyridine was obtained in 72% yield from 4,4′,4″,4′″-tetraethyl-2,2′:6′,2″:6″,2′″-quaterpyridine by the same procedure.