A One-Pot Synthesis of Dibenzofurans from 6-Diazo-2-cyclohexenones
摘要:
A novel and efficient protocol for the rapid construction of dibenzofuran motifs from 6-diazo-2-cyclohexenone and ortho-haloiodobenzene has been developed. The process involves one-pot Pd-catalyzed cross-coupling/aromatization and Cu-catalyzed Ullmann coupling.
Rhodium(III)-Catalyzed Cascade Redox-Neutral C-H Functionalization and Aromatization: Synthesis of Unsymmetrical<i>ortho</i>-Biphenols
作者:Zhiyong Hu、Guixia Liu
DOI:10.1002/adsc.201601296
日期:2017.5.17
An efficient rhodium(III)‐catalyzed coupling reaction of N‐aryloxyacetamides with 6‐diazo‐2‐cyclohexenones through a cascade redox‐neutral C–H functionalization and aromatization has been developed. This novel and scalable transformation provides a straightforward way to construct unsymmetrical ortho‐biphenols with broad substrate scope under mild and redox‐neutral conditions. The synthetic utility
A Pd-catalyzed cascade reaction of N–H insertion and oxidative dehydrogenative aromatization: a new entry to 2-amino-phenols
作者:Dong Ding、Xiaobing Lv、Jian Li、Lin Qiu、Guangyang Xu、Jiangtao Sun
DOI:10.1039/c4ob00652f
日期:——
A palladium-catalyzed cascade reaction of N–H insertion (NHI) and oxidative dehydrogenative aromatization (ODA) has been developed, which affords a straightforward and efficient way to access the carbazole precursors (2-arylamino-phenols) as well as to prepare 2-alkylamino-phenols from non-aromatic substrates.
Copper-Catalyzed NH Insertion and Oxidative Aromatization Cascade: Facile Synthesis of 2-Arylaminophenols
作者:Dong Ding、Xiaobing Lv、Jian Li、Guangyang Xu、Bing Ma、Jiangtao Sun
DOI:10.1002/asia.201402080
日期:2014.6
A copper‐catalyzed cascade reaction of N‐Hinsertion and oxidativearomatization has been developed. 2‐Arylaminophenols have been prepared in moderate to high yields from the diazo substrates. Moreover, this newly established methodology allows efficient access to natural 1‐oxygenated carbazole alkaloids, such as glycozolicine and murrayafoline A.