A novel and efficient oligomerization of acetylenes catalyzed by palladium complex 新型高效钯催化下不同取代炔烃的低聚反应
2.
A novel method for palladium - catalyzed cyclotrimerization of alkynes in supercritical carbon dioxide ( scco2 ) has been developed 摘要研究了以超临界二氧化碳为反应介质溴化钯催化炔烃环三聚反应的新方法。
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Acetylene is one of the most simple and important chemical compound in acetylene series . it has an active chemical property , easy to synthisize , polymerize and cause other chemical reactions 乙炔是炔烃中最简单也是最重要的一个化合物，它的化学性质非常活泼，容易进行加成和聚合以及其它化学反应。
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Abstract : this article reviews recent progress in nucleophilic reactions of the - carbon in vinylidene ruthenium complexes . the nucleophiles include alkene , alkyne , alcohol , acid , amine , water , etc 文摘:综述了近几年钌亚乙烯基络合物中间体-碳的亲核反应。亲核试剂包括烯烃、炔烃、醇、酸、胺、水等。
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The results showed that in scco2 cyclotrimerization of terminal acetylenes was carried out smoothly to regioselectively afford the corresponding benzene derivaties using pdbr2 as the catalyst 研究结果表明：二氧化碳介质中使用溴化钯为催化剂可以顺利地催化炔烃发生环三聚反应，区域选择性生成含苯环芳香族化合物。
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Based on characteristics and connectivity of the groups in molecules , the group contribution method and topological method was combined together , a new method was developed which can be used to calculate the density of alkyne from molecular structure 摘要根据分子中基团的特性和连接性，将基团贡献法和拓扑方法结合在一起，发展了一种计算炔烃密度的新方法基团键贡献法，该方法具有基团贡献法适用范围广和拓扑方法计算结果准确可靠的特点。
