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2. Transition-metal-free Intramolecular C–H amination of sulfamate esters and N-alkylsulfamides.

Author

Kiyokawa, Kensuke, Nakamura, Shogo, Jou, Keisuke, Iwaida, Kohji, and Minakata, Satoshi

Subjects
AMINATION, OXIDIZING agents, IODINE, ESTERS
Abstract

The transition-metal-free intramolecular C–H amination of sulfamate esters using iodine oxidants, tert-butyl hypoiodite (t-BuOI) and N-iodosuccinimide (NIS) is reported. A method using NIS was also successfully applied to the oxidative cyclization of N-alkylsulfamides. [ABSTRACT FROM AUTHOR]

Published
2019
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3. Amine/Hydrido Bifunctional Nanoporous Silica with Small Metal Nanoparticles Made Onsite: Efficient Dehydrogenation Catalyst

Author

Zhu, Yang, primary, Nakanishi, Takahiro, additional, Kanamori, Kazuyoshi, additional, Nakanishi, Kazuki, additional, Ichii, Shun, additional, Iwaida, Kohji, additional, Masui, Yu, additional, Kamei, Toshiyuki, additional, Shimada, Toyoshi, additional, Kumamoto, Akihito, additional, Ikuhara, Yumi H., additional, Jeon, Mina, additional, Hasegawa, George, additional, Tafu, Masamoto, additional, Yoon, Chang Won, additional, and Asefa, Tewodros, additional

Published
2016
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4. Amine/Hydrido Bifunctional Nanoporous Silica with Small Metal Nanoparticles Made Onsite: Efficient Dehydrogenation Catalyst

Author

Zhu, Yang, Nakanishi, Takahiro, Kanamori, Kazuyoshi, Nakanishi, Kazuki, Ichii, Shun, Iwaida, Kohji, Masui, Yu, Kamei, Toshiyuki, Shimada, Toyoshi, Kumamoto, Akihito, Ikuhara, Yumi H., Jeon, Mina, Hasegawa, George, Tafu, Masamoto, Yoon, Chang Won, and Asefa, Tewodros

Abstract

Multifunctional catalysts are of great interest in catalysis because their multiple types of catalytic or functional groups can cooperatively promote catalytic transformations better than their constituents do individually. Herein we report a new synthetic route involving the surface functionalization of nanoporous silica with a rationally designed and synthesized dihydrosilane (3-aminopropylmethylsilane) that leads to the introduction of catalytically active grafted organoamine as well as single metal atoms and ultrasmall Pd or Ag-doped Pd nanoparticles via on-site reduction of metal ions. The resulting nanomaterials serve as highly effective bifunctional dehydrogenative catalysts for generation of H2from formic acid.

Published
2017
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