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文章名     作者     期刊名     摘要     卷     期         如果没有找到您所需要的文献，请点击 ——此处申请     共25条记录   cis-1-aminoindan-2-ol in asymmetric syntheses [作者：Ghosh, AK; Fidanze, S; Senanayake, CH,期刊：Synthesis, 页码：937-961 , 文章类型： Review，,卷期：1998年-7] A review on cis-1-aminoindan-2-ol-derived asymmetric syntheses is described. Direct dichlorovinylation of nitriles with trichloroethylene under phase-transfer catalysis conditions [作者：Jonczyk, A; Gierczak, AH,期刊：Synthesis, 页码：962-964 , 文章类型： Article，,卷期：1998年-7] Reaction of trichloroethylene with nitriles 1a-k, carried out in the presence of 50% aqueous sodium hydroxide and tetrabutylammonium hydrogen sulfate as a phase-transfer catalyst, in diethyl ether at 5-10 degrees C affor... Polymer-supported acetylide addition to hexa-2,4-dienal [作者：Blaskovich, MA; Kahn, M,期刊：Synthesis, 页码：965-966 , 文章类型： Article，,卷期：1998年-7] Conditions have been established allowing for the successful addition of the anion of PEG linked propiolic acid to hexa-2,4-dienal, to prepare tethered dienes for cycloaddition chemistry. A new route to 1-oxo-1,2-dihydropyrimido[1,6-a]benzimidazole-4-carboxylates from ethyl 2-(benzimidazol-2-yl)-3-(dimethylamino)acrylate using solvent-free conditions [作者：Meziane, MAA; Rahmouni, M; Bazureau, JP; Hamelin, J,期刊：Synthesis, 页码：967-969 , 文章类型： Article，,卷期：1998年-7] Ethyl 2-(Benzimidazol-2-yl)-3-(dimethylamino)acrylate (3) has been used as starting material to develop a mild, efficient solvent-free preparation of ethyl 1-oxo (or thioxo)-1,2- dihydro-pyrimido[1,6-a]benzimidazol-4-car... Reinvestigation of birch reduction of benzo[1,3]dioxoles and further transformations of the resulting dihydro compounds [作者：Sylvain, C; Wagner, A; Mioskowski, C,期刊：Synthesis, 页码：970-972 , 文章类型： Article，,卷期：1998年-7] In spite of early reports by Birch, we demonstrated that treatment of benzodioxoles with sodium in ammonia in the presence of methanol almost quantitatively yields the corresponding dihydro compounds. Despite their poor ... A short synthesis of optically active Corey lactone by means of the dirhodium(II)-catalyzed intramolecular C-H insertion reaction of an alpha-diazo ketone [作者：Yakura, T; Yamada, S; Azuma, M; Ueki, A; Ikeda, M,期刊：Synthesis, 页码：973-974 , 文章类型： Article，,卷期：1998年-7] Optically active Corey lactone 8 has been synthesized using a dirhodium(II)-catalyzed intramolecular C-H insertion reaction of chiral alpha-diazo-beta-oxo ester 2 as a key step. A short enantioselective formal synthesis of (+)-(S)-4,4-(ethylenedioxy)-7-hydroxyoct-2-enoic acid: The penultimate precursor to (-)-(R,R)-pyranophorin [作者：Kalita, D; Khan, AT; Saikia, AK; Bez, G; Barua, NC,期刊：Synthesis, 页码：975-976 , 文章类型： Article，,卷期：1998年-7] Exclusive trans-addition of the nitronate dianion generated from the readily available (S)-4-acetoxy-1-nitropentane (S)-3 to methyl propiolate under PTC conditions gave adduct 4, which under carefully controlled Nef cond... Polymer supported perruthenate (PSP): Clean oxidation of primary alcohols to carbonyl compounds using oxygen as cooxidant [作者：Hinzen, B; Lenz, R; Ley, SV,期刊：Synthesis, 页码：977-979 , 文章类型： Article，,卷期：1998年-7] Molecular oxygen has been used as stoichiometric oxidant in polymer supported perruthenate (PSP) catalysed conversion of primary alcohols to carbonyl compounds affording pure products without the need for conventional wo... A new and efficient access to 2,5,8-tris(dialkylamino)benzo[1,2-d : 3,4-d ': 5,6-d '']-tristhiazoles [作者：Rossler, A; Boldt, P,期刊：Synthesis, 页码：980-982 , 文章类型： Article，,卷期：1998年-7] The star-shaped 2,5,8-tris(dialkylamino)benzotristhiazoles are interesting candidates in the field of discotic liquid crystals. As we found, they can be synthesized in a simple two step synthesis starting from the approp... Switching on and off metalation sites in triarylphosphines by manipulating substrate coordination [作者：Desponds, O; Huynh, C; Schlosser, M,期刊：Synthesis, 页码：983-985 , 文章类型： Article，,卷期：1998年-7] The inductive electron-withdrawing effect of the positively charged phosphorus atom in triarylphosphine-borane adducts is largely compensated by the steric congestion caused in its vicinity. Therefore, trihydro(triphenyl... Synthesis of 2-aryl-3-arylsulfonylindoles and 2-anilino-3-arylsulfonylindoles from 2-(arylsulfonyl)methylanilines using the aza-Wittig reaction of iminophosphoranes [作者：Takahashi, M; Suga, D,期刊：Synthesis, 页码：986-990 , 文章类型： Article，,卷期：1998年-7] 2-(Arylsulfonyl)methyl-N-(triphenylphosphoranylidene)- anilines 5 were prepared starting from 2-(arylsulfonyl)methyl- anilines 2. The aza-Wittig reaction of iminophosphoranes 5 with acyl cyanides gave N-[aryl(cyano)methy... Synthesis of tripeptides containing alpha,alpha-diphenylglycine by the modified Ugi reaction [作者：Yamada, T; Omote, Y; Yamanaka, Y; Miyazawa, T; Kuwata, S,期刊：Synthesis, 页码：991-998 , 文章类型： Article，,卷期：1998年-7] The modified Ugi reaction has been developed to synthesize tripeptides containing alpha,alpha-diphenylglycine (Dph) together with bulky amino acids. By the use of diphenylmethanimine, N-benzyloxycarbonyl (Z) amino acids ... Efficient synthesis of fluorophore-linked maleimide derivatives [作者：Reddy, PY; Kondo, S; Fujita, S; Toru, T,期刊：Synthesis, 页码：999-1002 , 文章类型： Article，,卷期：1998年-7] Lewis acid and hexamethyldisilazane promoted efficient synthesis of various fluorophore-linked maleimide derivatives from maleic anhydride and amines is described. Electrophilic reactions of triadamantylated calix[4]arenes at the upper rim [作者：Kovalev, V; Shokova, E; Luzikov, Y,期刊：Synthesis, 页码：1003-1008 , 文章类型： Article，,卷期：1998年-7] Chemical transformations of partially adamantylated calix[4]arenes at the upper rim are described. Starting from triadamantylated calix[4]arene, it is possible to obtain adamantane-containing macrocycles with formyl, acy... Spiro gamma-lactones via aluminum enolate-spiroepoxide openings [作者：Taylor, SK; Chmiel, NH; Mann, EE; Silver, ME; Vyvyan, JR,期刊：Synthesis, 页码：1009-1014 , 文章类型： Article，,卷期：1998年-7] The opening of several spiroepoxides by aluminum ester enolates is described. The isolated gamma-hydroxy eaters are cyclized to the corresponding spirolactones with high efficiency. Alternatively, the crude product from ... A large scale and concise synthesis of gamma-linolenic acid from 4-chlorobut-2-yn-1-ol [作者：Durand, S; Parrain, JL; Santelli, M,期刊：Synthesis, 页码：1015-1018 , 文章类型： Article，,卷期：1998年-7] A large scale and concise synthesis of gamma-linolenic acid is described. They key step of the synthesis involves a copper salt mediated cross-coupling of two different alkynes and chlorobutynol.