6,6'-取代1,1'-联二萘酚衍生的手性磷酸的合成

1,1'-联二萘酚(1)经溴代反应制得6,6'-二溴-1,1'-联二萘酚(2);2经苄基保护羟基制得2,2'-二苄氧基-6,6'-二溴-1,1'-联二萘(3);3经Ullmann缩合在6,6'-位引入甲氧基制得2,2'-二苄氧基-6,6'-二甲氧基-1,1'-联二萘(4b);3经Kumada偶联反应在6,6'-位引入正己基制得2,2'-二苄氧基-6,6'-二正己基-1,1'-联二萘(4c);4b和4c经还原脱去苄基制得6,6'-位取代1,1'-联二萘酚(5b和5c);2,5b和5c分别与三氯氧磷反应合成了3种1的6,6'-位取代手性磷酸(6a~6c),其结构经1H NMR和31P NMR表征。其中6c为新化合物。     

(S)-5,5'-二氨基-2,2'-双二苯基膦基-1,1'-联萘的绿色合成

以2,2'-双二苯基磷基-1,1'-联萘[(S)-1]为原料,与H2O2经氧化反应制得(S)-2,2'-双二苯基磷氧基-1,1'-联萘[(S)-2];(S)-2经酸性树脂催化硝化制得(S)-5,5'-二硝基-2,2'-双二苯基磷氧基-1,1'-联萘[(S)-3)];(S)-3经Pd/C催化硝基氢化还原制得(S)-5,5'-二氨基-2,2'-双二苯基磷氧基-1,1'-联萘[(S)-4];(S)-4经HSi Cl3/PPh3还原制得(S)-5,5'-二氨基-2,2'-双二苯基膦基-1,1'-联萘,总产率65.6%,其结构经1H NMR,31P NMR和IR确证。     

新型含硫代乙酸酯缺电子环蕃的合成

以3,5-二甲基苯酚为原料,经4步反应合成了1,1’-【{5-[3-(乙酰硫基)丙氧基]-1,3-亚苯基}双(亚甲基)】双{[(4,4’-联吡啶)-1-鎓]}二六氟磷酸盐(4);4与1,4-二溴甲基苯和萘模板在低温反应制得含硫代乙酸酯的缺电子环蕃(5);5经连续萃取及离子交换除去萘模板合成了新型含硫代乙酸缺电子环蕃——5,13,20,27-四氮杂七环[25,2,2,22,5,17,11,213,16,217,20,222,25]四十-9-(1-丙基硫代乙酸酯)氧-1(28),2,4,7,9,12,14,16,18,21,23,26,29,31,33,35,37,39-十八烯四六氟磷酸盐(6),其结构经1H NMR和13C NMR表征。     

一种新型线性手性聚（联萘酚-炔）的合成及其在Et2Zn不对称醛加成反应中的应用（英文）

(S)-5,5’-二溴-6,6’-二(4-三氟甲基苯基)-2,2’-联萘酚与(S)-5,5’-二乙炔基-6,6’-二丁基-2,2’-二丁氧基-1,1’-联萘酚通过Pd催化的Sonogashira反应合成了一种新的手性线性高分子聚合物,研究了这种高分子在Et2Zn不对称醛加成反应中的应用.结果表明这种高分子在Ti(OiPr)4的存在条件下展示了良好的反应活性.而且,这种高分子配体在循环利用10次后可仍然保持较好的活性.     

新型螺双二氢茚二酚衍生物的合成

螺双二氢茚二酚(SPINOL)与N-溴代丁二酰亚胺经溴代反应制得6,6'-二溴-螺双二氢茚二酚(1);1与叔丁基二甲基硅基三氟甲磺酸(TBSOTf)经醚化反应得6,6'-二溴-7-羟基-7'-叔丁基二甲硅氧基-1,1'-螺二氢茚(2);SPINOL经羟基保护后与碘甲烷经双甲基化反应制得6,6'-二甲基-7,7'-双(1-甲氧甲氧基)-1,1'-螺二氢茚(4);4经脱保护后再与TBSOTf经醚化反应合成了6,6'-二甲基-7-羟基-7'-叔丁基二甲硅氧基-1,1'-螺二氢茚(6)。2和6为新化合物,其结构经1H NMR,13C NMR和HR-ESI-MS表征。     

可光固化单体2,7-二溴-9,9-双[4’-(3″-乙基-3″-氧杂环丁烷甲氧基己基氧基)苯基]芴的合成

以芴为原料,经溴代和氧化反应制得2,7-二溴芴酮(3);3与苯酚反应合成2,7-二溴-9,9-双(4’-羟基苯基)芴(4);4与3-(6’-溴己氧基甲基)-3-乙基氧杂环丁烷经醚化反应合成了可光固化单体2,7-二溴-9,9-双[4’-(3″-乙基-3″-氧杂环丁烷甲氧基己基氧基)苯基]芴,总收率67%,其结构经1H NMR,13C NMR和元素分析表征。     

钯催化氟代偕二醇的芳基化反应

以醋酸钯、1,1’-联萘-2,2’-双二苯膦(BINAP)为催化剂,二甲苯为溶剂,氟代偕二醇砌块在碳酸钾的作用下,脱三氟乙酸后与溴代芳烃发生芳基化反应,于130℃反应7 h,合成了一系列α-氟代芳基酮类化合物,收率最高可达96%,其结构经¹H NMR,¹³C NMR,¹⁹F NMR和HR-MS(ESI)表征。     

2-氟-6-三氟甲基苄胺的合成新方法

以2-甲基-3-三氟甲基苯胺（1）为原料,经Balz-Schiemann反应制得3-氟-2-甲基三氟甲苯（3）;3经溴代制得2-氟-6-三氟甲基苄溴(4）,最后经Gabriel反应合成2-氟-6-三氟甲基苄胺,总收率53.4%,其结构经¹H NMR和MS(ESI)确证。     

固相研磨合成4,4''''-联吡啶季铵盐

采用室温固相研磨的方法,4,4'-联吡啶与连有阻塞基的乙氧乙醇磺酸酯(或苄溴)反应,得到单取代的4,4'-联吡啶六氟磷酸盐(2),2再与α,α'-二(溴甲基)-2,2'-联吡啶反应,得到哑铃型化合物--2,2'-联吡啶桥连的双-4,4'-联吡啶六氟磷酸盐(3),收率约90%.2和3的结构经1H NMR, 13C NMR和MS表征.     

(±)-沙美特罗昔萘酸盐的全合成

以对羟基苯乙酮为原料,经氯甲基化、酯化、溴代、水解和二醇保护等反应制得1-(2,2-二甲基-4H-1,3-苯并二氧芑-6-基)-2-溴乙酮(6);首次以(±)-α-苯乙胺为胺化试剂,6经胺化反应得1-(2,2-二甲基-4H-1,3-苯并二氧芑-6-基)-2-(1-苯乙氨基)乙酮(7);7经NaBH4还原得1-(2,2-二甲基-4H-1,3-苯并二氧芑-6-基)-2-[α-苯乙氨基]乙醇(8);8经脱苄、亲核取代、脱保护及成盐等反应合成了(±)-沙美特罗昔萘酸盐,总收率5.8%。其中7和8为新化合物,其结构经1H NMR,IR和MS表征。     

α-Amino acid derived enaminones and their application in the synthesis of N-protected methyl 5-substituted-4-hydroxypyrrole-3-carboxylates and other heterocycles

A new and simple synthesis of novel N-protected methyl 5-substituted-4-hydroxypyrrole-3-carboxylates, which exist in equilibrium with their 4-oxo tautomers, has been developed in two steps starting from N-protected α-amino acids. The key intermediates are enaminones, which can also be isolated, characterized, and used for the construction of other functionalized heterocycles, before they spontaneously decompose to pyrrole products. 4-Hydroxypyrroles are prone to partial aerial oxidation but can be efficiently alkylated or reduced to stable polysubstituted pyrrolidine derivatives.     

Specific intramolecular aromatic CH insertion of diazosulfonamides

The chemoselectivity in the intramolecular CH insertion of various diazosulfonamides has been experimentally studied. The results reveal that the aliphatic 1,4-, 1,5-, or 1,6-C(sp³)?H insertions of diazosulfonamides are not accessible, while the aromatic 1,5-C(sp²)?H insertion can be realized specifically by adjusting the diazo-adjacent group. In addition, the general chemoselectivities in the intramolecular CH insertions of diazosulfonyl compounds are summarized. Generally, diazosulfones undergo both aromatic 1,5-C(sp²)?H and aliphatic 1,5- and 1,6-C(sp³)?H insertions, while diazosulfonates undergo aliphatic 1,5- and 1,6-C(sp³)?H insertions. However, diazosulfonamides only undergo aromatic 1,5-C(sp²)?H insertion.     

N-Heterocyclic carbene-palladacyclic complexes: synthesis,characterization and their applications in the C-N coupling and α-arylation of ketones using aryl chlorides

N-Heterocyclic carbene-palladacyclic complexes 3 were successfully achieved in a one-pot procedure under mild conditions. The structure of 3a was unambiguously confirmed by X-ray single crystal diffraction and it was an active catalyst in the Buchwald-Hartwig amination and α-arylation of ketones even at very low catalyst loadings (0.01?mol%).     

Iodine-mediated oxidative Pictet-Spengler reaction using terminal alkyne as the 2-oxoaldehyde surrogate for the synthesis of 1-aroyl-β-carbolines and fused-nitrogen heterocycles

An efficient iodine-mediated oxidative Pictet-Spengler reaction in dimethyl sulphoxide (DMSO) using terminal alkynes as the 2-oxoaldehyde surrogate for the synthesis of aryl (9H-pyrido[3,4-b]indol-1-yl)methanones is described. The scope of the protocol includes the total synthesis of Fascaplysin, Eudistomins Y₁ and Y₂. The methodology is extended for preparing pyrrolo[1,2-a]-quinoxaline and indolo[1,5-a]quinoxaline derivatives. The utility of 1-aroyl-β-carbolines was demonstrated by performing palladium-catalyzed β-carboline directed ortho-C(sp2)-H functionalization of the phenyl ring with thiomethyl (SMe) group using DMSO as source and for accessing 4-aryl-canthin-6-ones.     

Facile synthesis of bicyclic 1-arylpyrazol-5-ones

In this Letter, we described a facile method for constructing fused bicyclic 1-arylpyrazol-5-one ring system. We employed various methylene-containing carboxylic acids as the substrates and proved that the pyrazolone ring closure requires activated methylene group in intermediate II. Accordingly, a series of structurally diversified, fused bicyclic 1-arylpyrazol-5-ones was prepared in moderate to high yields using the requisite substrates.     

Synthesis of pyrrolo[1,2-a]pyrazines and pyrazino[1,2-a]indoles by Curtius reaction in Morita-Baylis-Hillman derivatives

Synthesis of substituted pyrrolo[1,2-a]pyrazines and pyrazino[1,2-a]indoles from the Morita-Baylis-Hillman derivatives of acrylates via saponification followed by Curtius reaction is described.     

正丁胺对激光染料荧光谱影响的研究

用正丁胺作为碳源,采用射频辉光放电制备碳膜,选用激光染料R6G和聚乙二醇混合液作为蒸气源,采用单源热蒸发,在蒸发室与染料同时沉积得到混合膜,用拉曼光谱和红外光谱分析了碳膜的结构和键合方式,分析表明:碳膜中存在胺基团和氢原子.混合膜的荧光谱测量结果表明,认为正丁胺对染料荧光谱的影响是因为胺基和氢原子的存在.     

Cu0-catalysed 1,3-dipolar cycloadditions of α-amino acid derived N,N-cyclic azomethine imines to ynones

A series of 20 CuAIAC reactions between eight 4-acylamino substituted pyrazolidine-3-one-1-azomethine imines and four terminal ynones were performed using Cu⁰ as catalyst. The corresponding fluorescent cycloadducts were obtained in very high yields upon simple workup. Thus, Cu-metal turned out to be a better catalyst than Cu^I in terms of yield and ease of isolation. Availability of azomethine imines, mild reaction conditions, and simple workup enable a “click” access to libraries of densely substituted 2,3-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-ones. Reactivity of differently substituted dipoles was evaluated experimentally and by quantum chemical methods (DFT).     

Synthesis and antioxidative/anti-inflammatory activity of novel fullerene–polyamine conjugates

(E)-4-(Fullerenopyrrolidin-1-yl)-3-methylbut-2-enoic acid and its corresponding succinimidyl ester, readily obtained through Prato-type modification of C₆₀, were used for the selective N-acylation of polyamines. The thus obtained conjugates were evaluated for their antioxidative and anti-inflammatory activity and their cytotoxicity was determined. Members of this family of compounds showed interesting anti-lipid peroxidation, anti-lipoxygenase and anti-inflammatory activity and comparable cytocompatibility to spermidine.