• 采用模板导向法高产率地合成两个链亚烷基炔类共轭大环。

    The synthesis of the first two arylenealkyne conjugated macrocycles containing long alkylene bridge via Glaser coupling of template-directed tetraacetylenes was reported.

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  • 这里普济浜等胜景还有”、“葛贤墓”古迹

    There are Puji Bridge, scenic spots, such as wild-Bang, there are "five tombs," and "tomb Gexian" and other monuments.

    youdao

  • 分析表明,溶剂吡啶主要作用基本结构单元键。

    The results show that pyridine mainly ACTS with the side chains and bridge of basic unit in coals.

    youdao

  • 双键及一个烯醛基共轭程度大致相当。

    In the two sides of nitrogen bridge, the degree of conjugation of one double bond with one formyl polyenic group is about equal to two aromatic cycles.

    youdao

  • 双键及一个烯醛基共轭程度大致相当。

    In the two sides of nitrogen bridge, the degree of conjugation of one double bond with one formyl polyenic group is about equal to two aromatic cycles.

    youdao

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