Pd-Catalyzed Sequential CC and CN Bond Formations for the Synthesis of N-Heterocycles: Exploiting Protecting Group-Directed CH Activation under Modified Reaction Conditions
作者:Byung Seok Kim、Sun Young Lee、So Won Youn
DOI:10.1002/asia.201100024
日期:2011.8.1
addition reaction of N‐Ts‐2‐arylanilines with activated olefins has been achieved at ambient temperature under the newly defined reaction conditions. This process highlighted the directing effect of the N‐protecting group in CHactivation, displayed broad substrate scope with wide functional group compatibility; thus rendering a straightforward entry to a wide variety of N‐heterocycles such as d
Electrochemical
<scp>Palladium‐Catalyzed</scp>
Intramolecular C—H Amination of
<scp>2‐Amidobiaryls</scp>
for Synthesis of Carbazoles
作者:Qingqing Wang、Xiaojing Zhang、Pan Wang、Xinlong Gao、Heng Zhang、Aiwen Lei
DOI:10.1002/cjoc.202000407
日期:2021.1
The synthesis of carbazoles based on the electrochemical Pd‐catalyzed intramolecularC—H amination of 2‐amidobiaryls through oxidative cross coupling has been achieved under mild reaction conditions. The reaction can be carried out in undivided cell without the addition of external chemical oxidant. Besides good functional group compatibility, the desired carbazoles can be scaled up and modified easily
Palladium-Catalyzed Oxidative CC Bond Cleavage Cyclization of Biaryl-2-amines with Alkenes Involving CH Olefination and Carboamination
作者:Yan-Yun Liu、Ren-Jie Song、Cui-Yan Wu、Lu-Bin Gong、Ming Hu、Zhi-Qiang Wang、Ye-Xiang Xie、Jin-Heng Li
DOI:10.1002/adsc.201100651
日期:2012.2
A new, general method for the synthesis of phenanthridines has been developed by palladium-catalyzedoxidative remote CH olefination–carboamination–CC bondcleavage tandem reaction. It is noteworthy that alkenes are used as the one-carbon resources for this tandem reaction.
An efficient method for the construction of dibenzo[b,d]azepines containing two distinct stereogenic elements in a highly diastereoselective fashion is described. The key of the [5 + 2] reaction is to form a π-allylpalladium species through sequential C–H activation and regiospecific migratory insertion of the diene. This observation contrasts with the behavior of 1,2-alkenes that generally underwent
Palladium-Catalyzed Regioselective C–H Acylation of Biaryl-2-amines
作者:Zhong-Jian Cai、Chao Yang、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1021/acs.joc.5b00962
日期:2015.8.21
A palladium-catalyzed efficient C–H acylation reaction of biaryl-2-amines and aromatic aldehydes is developed. This dehydrogenativecross-coupling protocol could furnish monoacylation and diacylation products in moderate to good yields with a broad substrate scope and good regioselectivity.