室温条件下,10%(摩尔分数)碘化亚铜催化金属钐与查尔酮以良好的产率得到环戊醇衍生物。对反应溶剂、温度等反应条件的影响进行了研究。在优化的反应条件下,反应以51%~91%产率得到系列环戊醇衍生物。同时考察了查尔酮上不同取代基对产率...室温条件下,10%(摩尔分数)碘化亚铜催化金属钐与查尔酮以良好的产率得到环戊醇衍生物。对反应溶剂、温度等反应条件的影响进行了研究。在优化的反应条件下,反应以51%~91%产率得到系列环戊醇衍生物。同时考察了查尔酮上不同取代基对产率的影响。给出了代表性产物的1H NMR、13 C NMR及熔点等数据表征。展开更多
Carbon nanobelts(CNBs)with aesthetically appealing molecular structures and outstanding physical properties have attracted more and more attentions from the scientific community due to their potential applications in ...Carbon nanobelts(CNBs)with aesthetically appealing molecular structures and outstanding physical properties have attracted more and more attentions from the scientific community due to their potential applications in synthetic materials,host-guest chemistry,optoelectronics,and so on.The synthesis of CNBs at different stages was overviewed and some representative breakthroughs and advances in synthetic strategies were highlighted and discussed.The key issue for the synthesis of CNBs is how to construct curved structures with high strain energy.We not only proposed a few unconventional CNBs as the promising target molecules,but also pointed out the bottom-up synthesis of conjugated tubular segments of carbon nanotubes sharing similar properties as carbon nanotubes is the next focus in this emerging area.展开更多
文摘室温条件下,10%(摩尔分数)碘化亚铜催化金属钐与查尔酮以良好的产率得到环戊醇衍生物。对反应溶剂、温度等反应条件的影响进行了研究。在优化的反应条件下,反应以51%~91%产率得到系列环戊醇衍生物。同时考察了查尔酮上不同取代基对产率的影响。给出了代表性产物的1H NMR、13 C NMR及熔点等数据表征。
基金supported by the National Key R&D Program of China(No.2018YFA0703202)the Project of the Chinese Academy of Sciences(Nos.121111KYSB20200022,XDB0520000,and GJTD-2020-02)the Program from the Institute of Chemistry,the Chinese Academy of Sciences(No.E3210102).
文摘Carbon nanobelts(CNBs)with aesthetically appealing molecular structures and outstanding physical properties have attracted more and more attentions from the scientific community due to their potential applications in synthetic materials,host-guest chemistry,optoelectronics,and so on.The synthesis of CNBs at different stages was overviewed and some representative breakthroughs and advances in synthetic strategies were highlighted and discussed.The key issue for the synthesis of CNBs is how to construct curved structures with high strain energy.We not only proposed a few unconventional CNBs as the promising target molecules,but also pointed out the bottom-up synthesis of conjugated tubular segments of carbon nanotubes sharing similar properties as carbon nanotubes is the next focus in this emerging area.
