Electrochemical ruthenium-catalyzed alkyne annulations by C–H/Het–H activation of aryl carbamates or phenols in protic media
作者:Ruhuai Mei、Julian Koeller、Lutz Ackermann
DOI:10.1039/c8cc07732k
日期:——
Electrooxidative peri-C–H activation was accomplished by versatile ruthenium(II) catalysis in terms of C–H/N–H and C–H/O–H functionalization. Thus, alkyne annulations proved viable with ample scope by organometallic C–Hactivation. The sustainable electrocatalysis exploited electricity, thereby avoiding the use of toxic transition metals as sacrificial oxidants. The robust ruthenium(II)-electrocatalysis
Electrooxidative围-C-H活化是由通用的钌(完成II)催化的C-H / N-H和C-H / O-H官能的条款。因此,通过有机金属的C–H活化,炔烃环行证明在足够的范围内是可行的。可持续的电催化利用电力,从而避免使用有毒的过渡金属作为牺牲氧化剂。鲁棒的钌(II)电催化作用在质子醇/ H 2 O反应介质中,具有极好的位置,区域和化学选择性。
Rh(III)-Catalyzed Regioselective Functionalization of C–H Bonds of Naphthylcarbamates for Oxidative Annulation with Alkynes
作者:Xuan Zhang、Weili Si、Ming Bao、Naoki Asao、Yoshinori Yamamoto、Tienan Jin
DOI:10.1021/ol502317c
日期:2014.9.19
A Rh(III)-catalyzed highly efficient and regioselective functionalization of diverse C–H bonds of naphthylcarbamates for oxidative annulation with alkynes has been developed. The annulation with a neutral rhodium catalyst system proceeds through peri C–H bond functionalization of arylcarbamates to give benzoquinoline derivatives, while with a cationic rhodium catalyst system it proceeds through ortho