A highly efficient catalytic dearomatization of indoles via visible-light photocatalysis is presented. The common indole tethered alcohol at the N1 or C2 position reacts in a cascade fashion, providing facile access to diverse indolone scaffolds.
Palladium(II)-Catalyzed Intramolecular [2 + 2 + 2] Annulation of Indolyl 1,3-Diynes: Construction of Azepino-Fused Carbazoles
作者:Meng-Lian Yao、Xiao-Yuan Wang、Guang-Chao Feng、Ji-Kai Liu、Bin Wu、Jin-Ming Yang
DOI:10.1021/acs.orglett.3c01186
日期:2023.6.30
A novel palladium(II)-catalyzedintramolecular [2 + 2 + 2] annulation of indolyl 1,3-diynes is described in this contribution. A variety of azepino-fused carbazoles are obtained in moderate to excellent yields. The key to the success of this transformation is the use of a carboxylic acid as an additive. This protocol features broad functional group tolerances, easy handling in air, and 100% atom economy
Access to Piperazine-Fused Pyrrolocarbazoles Enabled by Acid-Catalyzed Stereoselective Hydroarylation of Ynamide–Indoles and Subsequent Diels–Alder Reactions/Aromatizations
作者:Ze Zhou、Xiang Huang、Qing-Yi Wei、Yi-Lin Wang、Bin Wu、Jin-Ming Yang