16616-82-3Relevant academic research and scientific papers
Counterion Control of t-BuO-Mediated Single Electron Transfer to Nitrostilbenes to Construct N-Hydroxyindoles or Oxindoles
Driver, Tom G.,Sung, Siyoung,Wink, Donald J.,Zadrozny, Joseph M.,Zhao, Yingwei,Zhu, Haoran
, p. 19207 - 19213 (2021/08/09)
tert-Butoxide unlocks new reactivity patterns embedded in nitroarenes. Exposure of nitrostilbenes to sodium tert-butoxide was found to produce N-hydroxyindoles at room temperature without an additive. Changing the counterion to potassium changed the reaction outcome to yield solely oxindoles through an unprecedented dioxygen-transfer reaction followed by a 1,2-phenyl migration. Mechanistic experiments established that these reactions proceed via radical intermediates and suggest that counterion coordination controls whether an oxindole or N-hydroxyindole product is formed.
Regioselective reaction of 2-indolylcyanocuprates with electrophiles
Ishikura, Minoru,Uemura, Reina,Yamada, Koji,Yanada, Reiko
, p. 2349 - 2356 (2007/10/03)
The reaction of 2-indolylcyanocuprate with electrophiles was found to give rise to 2- and 3-substituted indoles in regioselective manner.
Investigation of the reaction of N-substituted indolylborates: Palladium catalyzed cross-coupling reactions and intramolecular alkyl migration reactions
Ishikura, Minoru,Agata, Isao,Katagiri, Nobuya
, p. 873 - 879 (2007/10/03)
The palladium catalyzed cross-coupling reaction of indolylborates with various N-protecting groups was investigated, where N-Methyl, N-methoxy, and N-tert-butoxycarbonyl groups were found to be useful. However, triethyl(1-methoxymethylindol-2- yl)borate could not be used for this reaction. It was also found that the alkyl migration reaction of trialkyl(1- methoxymethylindol-2-yl)borate produced 2-alkyl-1-methyl-indole accompanied by the unexpected reduction of 1-methoxymethyl group to 1-methyl group.
The use of the N-substituted triethyl-(indol-2-yl)borate for the palladium catalyzed cross-coupling reaction
Ishikura, Minoru,Matsuzaki, Yukinori,Agata, Isao
, p. 2309 - 2312 (2007/10/03)
The influence of N-substituent of triethyl(indol-2-yl)borate (2) on the palladium catalyzed cross-coupling reaction was examined, and an efficiency of triethyl(1-tert-butoxycarbonylindol-2-yl)borate (2e) could be shown.
