Cobalt-Catalyzed Selective Synthesis of Isoquinolines Using Picolinamide as a Traceless Directing Group
作者:Changsheng Kuai、Lianhui Wang、Bobin Li、Zhenhui Yang、Xiuling Cui
DOI:10.1021/acs.orglett.7b00702
日期:2017.4.21
first been employed as a traceless directing group for the cobalt-catalyzed oxidative annulation of benzylamides with alkynes to synthesize isoquinolines throughC–H/N–H bonds activation. Oxygen is used as a terminal oxidant. This protocol exhibits good functional group tolerance and excellent regioselectivity. Both terminal and internalalkynes can be efficiently applied to this catalytic system as substrates
Facile synthesis of isoquinolines by imination and subsequent palladacycle-catalyzed iminoannulation of internal alkynes
作者:Fan Yang、Junli Zhang、Yangjie Wu
DOI:10.1016/j.tet.2011.02.044
日期:2011.4
An efficient and facilesynthesis of isoquinolines has been described via a tandem reaction of imination of o-halobenzaldehydes with tert-butyl amine and subsequent palladacycle-catalyzed iminoannulation of internal alkynes. This tandem reaction could be carried out successively in one pot without any special operation, and the annulation step could afford isoquinolinesderivatives in moderate to good
Oxidative coupling of benzylamines with internal alkynes accompanied by dehydrogenation and dehydrogenativecyclization proceeds efficiently under rhodium catalysis to selectively give the correspo...