Internal Oxidant-Triggered Aerobic Oxygenation and Cyclization of Indoles under Copper Catalysis
作者:Huawen Huang、Jinhui Cai、Xiaochen Ji、Fuhong Xiao、Ya Chen、Guo-Jun Deng
DOI:10.1002/anie.201508076
日期:2016.1.4
A concise synthesis of pyrazolo[1,5‐a]indole derivatives by copper‐catalyzed aerobic oxygenation and cyclization of indoles with oxime acetates is described. This protocol represents an elegant example of N‐1, C‐2, and C‐3 tri‐functionalization of indoles in one‐pot. Mechanistic studies indicate the reaction proceeds through a radical procedure. Oximes as an internal oxidant have been demonstrated
ARYLATED BETA-DICARBONYL COMPOUNDS AND PROCESS FOR THE PREPARATION THEREOF
申请人:Santosh Mhaske Baburao
公开号:US20140228592A1
公开(公告)日:2014-08-14
The invention discloses a one pot process for the arylation of β-dicarbonyl compounds. Particularly, the present invention discloses transition-metal-free, chemo-selective, one pot process for the C-arylation of malonamide esters having Formula I at room temperature provide temperature range to obtain the arylated compounds of formula II with good yield, wherein the arylated compounds are selected from mono-arylated compound and di-arylated compound or mixture thereof.
A new strategy for direct and highly efficient synthesis of 2,3′-bisindolin-3-ones has been developed via a gold/copper-co-catalyzed tandemreactions of 2-alkynylanilines using TBHP as the terminal oxidant and oxygen-atom source. The single-step process involves a novel tandem intermolecular nucleophilic addition, intramolecular cyclization/oxidative cross-dehydrogenative coupling where up to four