Modulating Reactivity and Diverting Selectivity in Palladium-Catalyzed Heteroaromatic Direct Arylation Through the Use of a Chloride Activating/Blocking Group
作者:Benoît Liégault、Ivan Petrov、Serge I. Gorelsky、Keith Fagnou
DOI:10.1021/jo902515z
日期:2010.2.19
Through the introduction of an aryl chloride substituent, the selectivity of palladium-catalyzeddirectarylation may be diverted to provide alternative regioisomeric products in high yields. In cases where low reactivity is typically observed, the presence of the carbon−chlorine bond can serve to enhance reactivity and provide superior outcomes. From a strategic perspective, the C−Cl bond is easily
DMSO/SOCl<sub>2</sub>-Enabled Synthesis of 3-Chloroindoles via Desulfonylative Chlorocyclization of N,N-Disubstituted 2-Alkynylanilines
作者:Xuemin Li、Yifu Cheng、Yue Li、Fengxia Sun、Xiangyu Zhan、Zhifang Yang、Jingyue Yang、Yunfei Du
DOI:10.1021/acs.joc.3c02471
日期:2024.2.2
intramolecular cyclization/chlorination of N,N-disubstituted 2-alkynylanilines, leading to the synthesis of a series of 3-chloroindoles with moderate to good yields. Differing from the previously reported interrupted Pummerer reaction featuring the introduction of SMe moiety, the current approach adopted an alternative pathway that realized the incorporation of chlorine atom to the indole skeleton via