カーボニル化合物の効率的な還元性アミネーションに対するルテニウムナノ粒子の電子効果
Tasuku Komanoya1, Takashi Kinemura1, Yusuke Kita1
1Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology , Nagatsuta-cho 4259, Midori-ku, Yokohama 226-8503, Japan.
Journal of the American Chemical Society
|August 1, 2017
まとめ
Nb2O5のルテニウムナノ粒子は,還元性アミンの合成のための選択的,再利用可能な触媒を提供します. この方法では,バイオマスの化合物から2,5-bis ((アミノメチル) フランのような有価なモノマーを効率的に生成します.
科学分野:
- カタリシス
- 材料科学
- 有機合成
背景:
- 主要アミンの選択的合成は化学工業にとって不可欠ですが,依然として困難です.
- 異質な触媒は,その再利用性と分離の容易さのために求められます.
- 既存の方法はしばしば選択性に問題があり,望ましくない副産物につながります.
研究 の 目的:
- 主要なアミンの合成のための高度に選択的で再利用可能な異質な触媒を開発する.
- 還元に敏感な機能群を持つカルボニル化合物の還元性アミネーションを調査する.
- アラミド製の重要なモノマーである2,5-ビス・アミノメチル・フーランを合成する.
主な方法:
- ニオビウム酸化物 (Nb2O5) を支持するルテニウムナノ粒子を異質な触媒として利用する.
- アンモニア (NH3) と水素 (H2) を使って低温の還元性アミネーションを行う.
- ヘテロサイクルとハロゲンの存在における触媒の性能を特徴付ける.
主要な成果:
- Nb2O5のルテニウムナノ粒子は,原発アミンの形成に高い選択性を示した.
- 触媒は二次アミンと水素化された副産物の形成を効果的に防止した.
- 重要なイミン副産物なしに,5−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
結論:
- Nb2O5を支えるルテニウムナノ粒子は,選択性プライマリアミン合成のための有望な異質な触媒です.
- 触媒の選択性は,Nb2O5表面上のRuの弱い電子提供能力に起因する.
- この触媒システムは,バイオマスから派生した先駆体から貴重なモノマーへの効率的な経路を提供します.
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