An Approach to the Regioselective Diamination of Conjugated Di- and Trienes
作者:Anton Lishchynskyi、Kilian Muñiz
DOI:10.1002/chem.201103435
日期:2012.2.20
It's do or diaminate: The selective diamination of 1,3‐butadienes in the presence of hypervalent iodine reagents has been developed. This oxidation process proceeds with complete selectivity in favor of diamination. Depending on the substrate, it proceeds either with 1,2‐ or 1,4‐regioselectivity (see scheme).
Preparation of Heteroaromatic (Aryl)iodonium Imides as I−N Bond-Containing Hypervalent Iodine
作者:Kazuma Ishida、Hideo Togo、Katsuhiko Moriyama
DOI:10.1002/asia.201601349
日期:2016.12.19
Hypervalent iodine(III) compounds containing iodine–nitrogen bonds are very attractive amination reagents in organic synthesis. Heteroaromatic (aryl)iodonium imidescontaining a iodine–nitrogen bond and a hypervalent iodine(III) atom were prepared from heteroarenes, bis(sulfon)imides and (diacetoxyiodo)arenes under mild conditions. These compounds were stable under air and in organic solvents, and
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
Regioselective C<sub>sp2</sub>–H dual functionalization of indoles using hypervalent iodine(<scp>iii</scp>): bromo-amination via 1,3-migration of imides on indolyl(phenyl)iodonium imides
作者:Katsuhiko Moriyama、Kazuma Ishida、Hideo Togo
DOI:10.1039/c4cc09077b
日期:——
A regioselectiveC(sp(2))-H dual functionalization of indoles, which underlies bromo-amination via the 1,3-migration of imide groups on indolyl(phenyl)iodonium imides as novel imide-combined hypervalent iodines(III), has been developed to provide 2-bis(sulfonyl)amino-3-bromo-indoles under the metal-free conditions.