Facile and regioselective synthesis of functionalized benzenes via cascade reactions of 1,2-allenic ketones with 4-sulfonyl crotonates
作者:Shitao Duan、Yuanshuang Xu、Xinying Zhang、Xuesen Fan
DOI:10.1016/j.tet.2018.06.009
日期:2018.7
An efficient and regioselective synthesis of functionalized benzenes via the cascade reactions of 1,2-allenic ketones with 4-sulfonyl crotonates undermild reaction conditions has been established. Mechanistically, the formation of the title compounds involves a cascade procedure consisting of an intermolecular regioselective Michael addition followed by an intramolecular condensation and aromatization
Synthesis of 2-Vinylbenzofurans via the Copper-Catalyzed Multicomponent Reactions Involving an Oxa-Michael/Arylation/Vinylation Cascade
作者:Jie-Ping Wan、Hang Wang、Yunyun Liu、Hanfeng Ding
DOI:10.1021/ol502506g
日期:2014.10.3
2-vinylbenzofurans have been synthesized via the copper catalyzed. one-pot, three component reactions of o-iodophenols in situ generated allenes, and dichloromethane Cascade transformation of oxa-Michael addition C-arylation, and sp(3)C-H/sp(3)C-Cl conversion-based vinylation has been involved in realizing the construction of this 2-vinylbenzofuran framework.