共查询到20条相似文献,搜索用时 15 毫秒
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J Leitich 《Tetrahedron letters》1980,21(32):3025-3028
The relative rates of formation of and [2+2]cycloadducts of benzyne to , - and , -1,5-cyclooctadiene, - and -cyclooctene are discussed and properties of the adducts (e.g., their unusual hydrogenation) are described. 相似文献
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Intramolecular DIELS-ALDER reactions of requisite trienes led to -1-decalones, an endo intermediate state. 相似文献
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A stereospecific, highly efficient, generally applicable synthesis of - and -1-alkoxy-1,3-butadienes involving dehydrative decarboxylations of 4,5-unsaturated-2-alkoxy-3-hydroxy-carboxylic acids is described. 相似文献
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Complexes of the type L2PdCl2 (L = CH3,CN, CH3CH2CN, PhCN) in benzene or chloroform act as homogeneous catalysts in the room temperature to isomerization of ethylchrysanthemate and chrysanthemic acid. 相似文献
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M.V. Lakshmikantham Michael P. Cava Michael Albeck Lars Engman Patrick Carroll Jan Bergman Fred Wudl 《Tetrahedron letters》1981,22(42):4199-4200
The reaction of sodium phenylethynyltellurolate with ethereal hydrogen chloride afforded, in addition to -2,4-dibenzylidene-1,3-di telluretane, a product shown to be the title compound by an X-ray crystallographic analysis. 相似文献
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The 6-hydroperoxy-1,4-cyclooctadiene (), which is formed in the photosensitized oxygenation of 1,5-cyclooctadiene (), affords on further singlet oxygenation 5,8-dihydroperoxy-1,3-cyclooctadiene (), which via triphenylphosphine reduction leads to -5,8-dihydroxy-1,3-cyclooctadiene () and subsequent pyridinium chlorochromate oxidation to 1,3-cyclooctadien-5,8-dione (). 相似文献
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Giovanni Fronza Claudio Fuganti Piero Grasselli Giulio Marinoni 《Tetrahedron letters》1979,20(40):3883-3886
The enantiomeric alcohols () and (), obtained from (2,3) tartaric acid and, respectively, -threonine, have been used to construct the C6, enantiomeric deoxy amino sugar derivatives () and () 相似文献
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