Copper-Catalyzed Carboxamide-Directed Ortho Amination of Anilines with Alkylamines at Room Temperature
摘要:
In this report, a highly efficient method for the room temperature installation of alkyl amino motifs onto the ortho position of anilines via Cu-catalyzed carboxamide-directed amination with alkylamines is described. This method offers a practical solution for the rapid synthesis of complex arylamines from simple starting materials and enables new planning strategies for the construction of arylamine-containing pharmacophores. A single electron transfer (SET)-mediated mechanism is proposed.
The preparation and X‐ray structural characterization of aliphatic amino iodane (III) reagents has been realized. These new reagents could be used for the Cu‐catalyzed directed electrophilic amination of aryl amines.
Transition-metal free oxidative C–H etherification of acylanilines with alcohols through a radical pathway
作者:Xiaobo Xu、Zhengzhou Chu、Chengcai Xia
DOI:10.1039/c9ob01224a
日期:——
for the synthesis of methyl/ethyl aryl ether via oxidative C-H etherification of acylanilines with alcohols has been developed. Various acylanilines are compatible under standard conditions, giving the corresponding products in moderate to good yields. This strategy avoids transition-metal catalyst and excessive alcohol, providing a simple and reliable alternative method for the synthesis of methyl/ethyl
Catalytic direct amidations in <i>tert</i>-butyl acetate using B(OCH<sub>2</sub>CF<sub>3</sub>)<sub>3</sub>
作者:Charlotte E. Coomber、Victor Laserna、Liam T. Martin、Peter D. Smith、Helen C. Hailes、Michael J. Porter、Tom D. Sheppard
DOI:10.1039/c9ob01012b
日期:——
polar carboxylic acid and amine substrates. As a consequence, most catalytic amidation protocols are unsuccessful when applied to polar and/or functionalised substrates of the kind commonly used in medicinal chemistry. In this paper we report a practical and useful catalytic direct amidation reaction using tert-butyl acetate as the reaction solvent. The use of an ester solvent offers improvements in terms
Copper-Catalyzed Carboxamide-Directed <i>Ortho</i> Amination of Anilines with Alkylamines at Room Temperature
作者:Qiong Li、Shu-Yu Zhang、Gang He、Zhaoyan Ai、William A. Nack、Gong Chen
DOI:10.1021/ol500464x
日期:2014.3.21
In this report, a highly efficient method for the room temperature installation of alkyl amino motifs onto the ortho position of anilines via Cu-catalyzed carboxamide-directed amination with alkylamines is described. This method offers a practical solution for the rapid synthesis of complex arylamines from simple starting materials and enables new planning strategies for the construction of arylamine-containing pharmacophores. A single electron transfer (SET)-mediated mechanism is proposed.