Annulative π-Extension (APEX) of Indoles to Pyrido[1,2-<i>a</i>]indoles Using 4-Oxo Peroxides as C4 Units
作者:Xin Wang、Chenhao Lou、Leiyang Lv、Zhiping Li
DOI:10.1021/acs.orglett.1c02062
日期:2021.8.6
3-substituted indoles to pyrido[1,2-a]indoles is developed by using 4-oxo peroxides as π-extending reagents, which are employed as versatile C4 building blocks. This transformation is initiated by Brønsted acid-mediated Hock rearrangement of the peroxyl group. Notably, the pyrido[1,2-a]indole products are obtained by elimination of the indole moiety from the corresponding dihydropyrido[1,2-a]indoles, which
Copper/Manganese Cocatalyzed Oxidative Coupling of Vinylarenes with Ketones
作者:Xing-Wang Lan、Nai-Xing Wang、Wei Zhang、Jia-Long Wen、Cui-Bing Bai、Yalan Xing、Yi-He Li
DOI:10.1021/acs.orglett.5b02116
日期:2015.9.18
A novel copper/manganese cocatalyzed direct oxidative coupling of terminal vinylarenes with ketones via C(sp(3))-H bond functionalization following C-C bond formation has been developed using tert-butyl hydroperoxide as the radical initiator. Various ketones underwent a free-radical addition of terminal vinylarenes to give the corresponding 1,4-dicarbonyl products with excellent regioselectivity and efficiency through one step. A possible reaction mechanism has been proposed.