室温金属触媒化水素借用アルキレーション
Elliot P Bailey1, Timothy J Donohoe1, Martin D Smith1
1Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K.
ACS catalysis
|February 12, 2026
まとめ
水素借入反応はアルコールをアルキル化剤として効率的に使用し,副産物として水のみを生成します. このレビューは,C-CとC-N結合形成のための室温水素借入の最近の進歩に焦点を当てています.
科学分野:
- 有機化学 オーガニック・ケミストリー
- カタリシス カタリシス カタリシス
- 持続可能な化学
背景:
- 水素借入反応は,アルキルハリドを使用した伝統的なアルキル化に持続可能な代替案を提供します.
- アルコールは豊富で安定しており,緑色のアルキル化剤であり,副産物として水のみを生成します.
- ほとんどの報告された水素借入反応は,高温 (76~200°C) を必要とし,その適用性を制限しています.
研究 の 目的:
- 室温 (≤30°C) の水素借入反応の現在の状態を見直す.
- 環境温度での水素借入による炭素-炭素 (C-C) と炭素-窒素 (C-N) の結合形成における進歩を強調する.
- 有機合成における低温触媒戦略の包括的な概要を提供する.
主な方法:
- 水素借入反応に関する最近の研究の文献レビュー.
- 30°Cまたはそれ以下で実施される反応に焦点を当てる.
- C-CとC-N結合形成のための触媒システム,反応条件,および基板の範囲の分析.
主要な成果:
- 室温での効率的な水素借入反応の開発において,著しい進展がみられた.
- 様々な触媒システムを用いた室温C-CおよびC-N結合形成の成功例が報告されています.
- これらの低温方法は,高温プロトコルと比較して,選択性が向上し,エネルギー消費量が減少します.
結論:
- 室温の水素借入は,現代の有機合成における実行可能で,ますます重要な戦略です.
- 触媒システムと反応最適化に関するさらなる研究は,これらの反応の範囲と効率を拡大することができます.
- このアプローチは,エネルギー投入と廃棄物の発生を最小限に抑えることで,グリーン化学の原則と一致しています.
キーワード:
アルコールがアルキル化剤として作用する.炭素−炭素結合を形成する.炭素-窒素結合の形成により炭素−窒素結合が形成される.エナチオセレクティビティ (enantioselectivity) とは,エナチオセレクティビティ (enantioselectivity) を意味する.機能群の許容度についてグリーン・ケミストリー 緑の化学地域選択性 地域選択性持続可能性の持続可能性さらに関連する動画
10:01In Situ High Pressure Hydrogen Tribological Testing of Common Polymer Materials Used in the Hydrogen Delivery Infrastructure
Published on: March 31, 2018
8.0K
04:09Demonstrating the Simplicity and In Situ Temperature Monitoring of the Mechanochemical Synthesis of Metal Chalcogenides Suitable for Thermoelectrics
Published on: August 30, 2024
817
関連する概念動画
03:06Alkali Metals
25.0K
Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
Table 1: Properties of the alkali metals
25.0K
00:26Hydrogen Bonds
134.5K
Hydrogen bonds are weak attractions between atoms that have formed other chemical bonds. One of these atoms is electronegative, like oxygen, and has a partial negative charge. The other is a hydrogen atom that has bonded with another electronegative atom and has a partial positive charge.
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
134.5K
01:04Hydrogen Bonds
15.1K
A hydrogen bond is formed when a weakly positive hydrogen atom already bonded to one electronegative atom (for example, the oxygen in the water molecule) is attracted to another electronegative atom from another polar molecule, such as water (H2O), hydrogen fluoride (HF), or ammonia (NH3). The huge electronegativity difference between the H atom (2.1) and the atom to which it is bonded (4.0 for an F atom, 3.5 for an O atom, or 3.0 for an N atom), combined with the very small size of an H atom...
15.1K
02:51Metal-Ligand Bonds
24.5K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
24.5K
02:32Bonding in Metals
52.8K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”.
52.8K
02:45Alkyl Halides
20.1K
Structural Properties
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...
20.1K