光誘発PdH触媒によるgem-Difluoroalkenesとアルケンのクロスディメリゼーションにより,CF₂Hモチーフにアクセスできます

関連する実験動画

Updated: Feb 19, 2026

[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst

[DPEPhosbcpCu]PF6: A General and Broadly Applicable Copper-Based Photoredox Catalyst

Published on: May 21, 2019

Luning Shen¹, Fen Wu², Dachang Bai²

¹Pingyuan Laboratory, State Key Laboratory of Antiviral Drugs, School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences, Henan Normal University, Xinxiang 453007, China.

Organic letters

|February 18, 2026

まとめ

この研究は,光とパラジウム触媒を用いた二酸化リフオロメチル化合物の合成のための新しい方法を導入しています. この効率的なプロセスは,医薬品化学の応用のための貴重な構成要素を生み出します.

科学分野:

有機化学オーガニック・ケミストリー
薬用化学薬用化学について
カタリシスカタリシスカタリシス

背景:

ディフルオロメチル (CF2H) グループは,薬剤開発において重要である.
CF2Hを含む化合物を合成するための既存の方法は,制限されることがあります.

研究の目的:

多種多様なアルファ-ジフローロメチル製品を合成するための効率的な方法を開発する.
ハイドロアルケニル化およびヒドロアルキル化のための光誘導パラジウム触媒の利用を調査する.

主な方法:

パラジウム触媒によるジェム・ディフルオアルケンのクロス・ディメリゼーションとスタイレン誘導体.
PdH種の光増強水分性を利用して,GEM-difluoroalkenesに挿入する.
アルキルヘック反応を用いて,C-C結合を脱フッ素化せずに形成する.

主要な成果:

様々なアルファ-ジフローロメチル製品の合成が成功しました.
モノ置換アルケーンとのC ((sp3) -C ((sp2) カップリングが実証されています.
C ((sp3) - C ((sp3)) の結合と1,1-非置換アルケンの結合が達成される.
プロトコルは穏やかな状態と幅広い機能群の耐性を示しています.

結論:

開発されたプロトコルは,価値あるアルファ-ジフローロメチル化合物への効率的な経路を提供します.
この方法は,医薬品化学における合成能力を拡張します.
光誘発パラジウム触媒は,二酸化フッ素メチル化のための新しいアプローチを提供します.

さらに関連する動画

Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-phosphinetriyltripiperidine]}palladium Under Mild Reaction Conditions

Mizoroki-Heck Cross-coupling Reactions Catalyzed by Dichloro{bis[1,1',1''-phosphinetriyltripiperidine]}palladium Under Mild Reaction Conditions

Published on: March 20, 2014

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Published on: October 24, 2017

関連する概念動画

[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction

[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction

The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.

Electrophilic 1,2- and 1,4-Addition of X2 to 1,3-Butadiene

Electrophilic 1,2- and 1,4-Addition of X₂ to 1,3-Butadiene

Electrophilic addition of halogens to alkenes proceeds via a cyclic halonium ion to form a 1,2-dihalide or a vicinal dihalide.

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide

Alkenes are converted to 1,2-diols or glycols through a process called dihydroxylation. It involves the addition of two hydroxyl groups across the double bond with two different stereochemical approaches, namely anti and syn. Dihydroxylation using osmium tetroxide progresses with syn stereochemistry.

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Reduction of Alkenes: Asymmetric Catalytic Hydrogenation

Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...

Cycloaddition Reactions: MO Requirements for Photochemical Activation

Cycloaddition Reactions: MO Requirements for Photochemical Activation

Some cycloaddition reactions are activated by heat, while others are initiated by light. For example, a [2 + 2] cycloaddition between two ethylene molecules occurs only in the presence of light. It is photochemically allowed but thermally forbidden.

Diels–Alder Reaction: Characteristics of Dienophiles

Diels–Alder Reaction: Characteristics of Dienophiles

In a Diels–Alder reaction, the diene is usually an electron-rich system and acts as a nucleophile, whereas the dienophile is electron-deficient and functions as an electrophile. Much like the diene, the nature of the dienophile significantly impacts the outcome of the reaction.
Characteristics of Dienophiles
Generally, the best dienophiles are alkenes containing electron-withdrawing substituents such as carbonyl, nitrile, and nitro groups. The feasibility of a Diels–Alder reaction depends...