Trifluoromethylation of arenediazonium salts with fluoroform-derived CuCF<sub>3</sub>in aqueous media
作者:Anton Lishchynskyi、Guillaume Berthon、Vladimir V. Grushin
DOI:10.1039/c4cc04930f
日期:——
A new protocol has been developed for trifluoromethylation of arenediazonium salts with moisture-sensitive CuCF3 (from fluoroform) in aqueous media. The reaction is governed by a radical mechanism, tolerates a broad variety of functional groups, and is applicable to the synthesis of complex, polyfunctionalized molecules.
NOVEL MACROCYCLIC DERIVATIVES, PROCESS FOR PREPARING SAME AND PHARMACEUTICAL COMPOSITIONS CONTAINING SAME
申请人:LES LABORATOIRES SERVIER
公开号:US20200253993A1
公开(公告)日:2020-08-13
Compound of formula (I):
wherein A
1
, A
2
, R
a
, R
b
, R
c
, R
d
, R
3
, R
4
, X, Y and G are as defined in the description,
and their use in the manufacture of medicaments.
作者:Jian-Jun Dai、Chi Fang、Bin Xiao、Jun Yi、Jun Xu、Zhao-Jing Liu、Xi Lu、Lei Liu、Yao Fu
DOI:10.1021/ja404217t
日期:2013.6.12
A copper-promoted trifluoromethylation reaction of aromatic amines is described. This transformation proceeds smoothly under mild conditions and exhibits good tolerance of many synthetically relevant functional groups. It provides an alternative approach for the synthesis of trifluoromethylated arenes and heteroarenes. It also constitutes a new example of the Sandmeyer reaction.
A transition-metal-free method for the synthesis of C6 phenanthridine derivatives by arylative cyclization of 2-isocyanobiphenyls with arylamines in one pot was developed. Mechanistic studies suggest that electrophilic aromatic substitution (SEAr) of a nitrilium intermediate and homolytic aromatic substitution (HAS) of an imidoyl radical intermediate are two competitive reaction pathways involved in
<i>ortho</i>-Naphthoquinone-Catalyzed Aerobic Hydrodeamination of Aryl Amines via <i>in Situ</i> De-diazotization of Aryl Diazonium Species
作者:Tengda Si、Hana Cho、Hun Young Kim、Kyungsoo Oh
DOI:10.1021/acs.orglett.2c03523
日期:2022.11.25
diazotization of arylamines was developed using ortho-naphthoquinone catalyst under aerobic conditions, where the 2-nitropropane served as a source of nitrosonium ion. The catalytic generation of diazonium species from arylamines was further explored in the hydrode-diazotization to give the corresponding products. The mechanistic studies indicated the involvement of arylradical species that readily