Silver-Catalyzed Tandem C≡C Bond Hydroazidation/Radical Addition/Cyclization of Biphenyl Acetylene: One-Pot Synthesis of 6-Methyl Sulfonylated Phenanthridines
作者:Jiawei Tang、Paramasivam Sivaguru、Yongquan Ning、Giuseppe Zanoni、Xihe Bi
DOI:10.1021/acs.orglett.7b01771
日期:2017.8.4
silver-catalyzed tandem carbon–carbon triple bond hydroazidation, radical addition, and cyclization of biphenyl acetylene is described under mild conditions, leading to the formation of 6-methyl sulfonylated phenanthridines in good yields. In this novel cascade reaction, most of the atoms are incorporated into the product without cleavage of the C≡C bond. Mechanistic studies suggest the reaction should proceed
在温和的条件下描述了银催化的串联碳-碳三键加氢叠氮,自由基加成和联苯乙炔的环化,导致形成高产率的6-甲基磺酰化菲啶。在这种新颖的级联反应中,大多数原子都掺入了产物中,而没有裂解C bondC键。机理研究表明,该反应应通过亚氨基自由基反应性中间体进行。