Copper-Catalyzed Indole-Selective C–N Coupling Reaction of Indolyl(2-alkoxy-phenyl)iodonium Imides: Effect of Substituent on Iodoarene as Dummy Ligand
作者:Kazuhiro Watanabe、Katsuhiko Moriyama
DOI:10.1021/acs.joc.8b02676
日期:2018.12.7
A monoalkoxy phenyl group as a dummy ligand on indolyl(aryl)iodonium imides, which is related to the N–I bonding hypervalent iodine(III) compound, for the copper-catalyzed indole-selective C–N coupling reaction was designed to provide 3-bissulfonimido-indole derivatives in high yields. In particular, the use of indolyl(2-butoxylphenyl)iodonium bissulfonimides indicated the high indole selectivity.
Cu-Catalyzed Oxidative 3-Amination of Indoles via Formation of Indolyl(aryl)iodonium Imides Using o-Substituted (Diacetoxyiodo)arene as a High-Performance Hypervalent Iodine Compound
作者:Kazuhiro Watanabe、Katsuhiko Moriyama
DOI:10.3390/molecules24061147
日期:——
An oxidative 3-amination of indole derivatives using hypervalent iodine(III) and bissulfonimides, which proceeds via the formation of indolyl(aryl)iodonium imides, was developed. This reaction was followed by an indole-selective copper-catalyzed oxidativeC–Ncoupling reaction to obtain 3-amino indole derivatives as single regioisomers. o-Alkoxy(diacetoxyiodo)arenes showed higher reactivity in the
Palladium-Catalyzed Intramolecular Oxidative Coupling Involving Double C(sp<sup>2</sup>)–H Bonds for the Synthesis of Annulated Biaryl Sultams
作者:Joydev K. Laha、Krupal P. Jethava、Neetu Dayal
DOI:10.1021/jo5011334
日期:2014.9.5
The palladium-catalyzed intramolecular oxidative coupling described herein involves a doubleC(sp2)–H bond functionalization in sulfonanilides, providing a workable access to biaryl sultams annulated into a six-membered ring that are otherwise difficult to obtain by literature methods. The other synthetic applications of this protocol including the synthesis of biaryl sultams containing a seven-membered
Nickel-Catalyzed Desulfitative Suzuki-Miyaura Cross-Coupling of<i>N</i>,<i>N</i>-Disulfonylmethylamines and Arylboronic Acids
作者:Liangshun Chen、Hongyue Lang、Lei Fang、Jianjun Yu、Limin Wang
DOI:10.1002/ejoc.201402919
日期:2014.10
A nickel-catalyzed approach for the synthesis of biaryl compounds from N,N-disulfonylmethylamines and arylboronicacids has been developed. Instead of arenesulfonyl chlorides, various N,N-disulfonylmethylamines were used as the aryl source through extrusion of SO2 to give cross-coupling products in moderate to good yields.
[EN] NOVEL IODINE COMPOUNDS, PROCESSES FOR THEIR PREPARATION AND USE THEREOF AS AMINATION AGENTS<br/>[FR] NOUVEAUX COMPOSÉS D'IODE, PROCÉDÉS POUR LEUR PRÉPARATION ET UTILISATION DE CEUX-CI EN TANT QU'AGENTS D'AMINATION
申请人:FUNDACIO PRIVADA INST CATALA D INVESTIGACIO QUIMICA ICIQ
公开号:WO2012160112A1
公开(公告)日:2012-11-29
The iodine compounds of the present invention corresponds to those of formula (I), wherein R1, R1' and X have several meanings. These iodine compounds gives rise to the amination of several substrates without the need of catalysts, especially metal catalysts, and confer to the amination reaction the further advantage of being performed under mild conditions, which is of interest for industrial-scale production of nitrogenated compounds with pharmaceutical, biological or medicinal applications. Therefore, the iodine compounds of the invention are useful as amination agents. The invention also discloses several processes for the preparation of the iodine compounds of formula (I).