イミニル基の非常識な源としてのアジド:ベンジルアジドとN-ヒドロキシイミドから電気化学的に誘導されたOオキシームの合成N-ヒドロキシイミドの結合N-O
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PubMedで要約を見る
まとめ
この要約は機械生成です。新しい電気化学的方法により,ベンジルアジドとN-ヒドロキシイミドからO-イミドオキシームを合成する. この有機合成アプローチでは,ベンジルアジドを新しいN-O結合反応のイミニルラジカル前駆体として利用する.
科学分野
- 有機化学
- 電気化学
- 合成方法論
背景
- 伝統的な有機合成には,厳しい条件や特定の前駆物質が必要です.
- 効率的な化学生産には,すぐに入手可能な原材料で新しい合成経路を開発することが不可欠です.
研究 の 目的
- O-イミドオキシメスを合成する 新しい電気化学的方法を発見するために
- 結合反応におけるイミニルラジカルの前駆体としてのベンジルアジドの有用性を調査する.
主な方法
- N-Oカップリングを用いた電気化学合成.
- 電気化学的条件下でベンジルアジドとN-ヒドロキシミドの反応
主要な成果
- O-イミドオキシメスの合成が成功し,最大94%の収量を得ました.
- ベンジルアジドが分子間結合のためのイミニルラジカルの有効な前駆体であることを実証した.
- この方法は,様々なベンジルアジドとN-ヒドロキシミドに広く適用可能である.
結論
- O-イミドオキシメスの新しい効率的な電気化学経路が確立されています.
- この研究は,有機化学におけるベンジルアジドの合成有用性を拡大する.
- 開発されたN-O結合方法は,複雑なイミドオキシーム構造にアクセスするための貴重なツールを提供します.
関連する概念動画
Direct alkylation of ammonia produces polyalkylated amines, along with a quaternary ammonium salt. To exclusively prepare primary amines, the azide synthesis method can be used.
Azide ions act as good nucleophiles and react with unhindered alkyl halides to form alkyl azides. Alkyl azides do not participate in further nucleophilic substitution reactions, thereby eliminating the chances of polyalkylated products. Alkyl azides are reduced by hydride-based reducing agents, like lithium aluminum...
Oximes can be reduced to primary amines using catalytic hydrogenation, hydride reduction, or sodium metal reduction. The reduction of aliphatic and aromatic nitro compounds to primary amines takes place by either catalytic hydrogenation or by using active metals like Fe, Zn, and Sn in the presence of an acid.
Though catalytic hydrogenation can reduce nitrobenzenes, the reduction is nonselective in the presence of other functional groups. For instance, if nitrobenzene contains an aldehyde group,...
Amides are synthesized by treating carboxylic acids with amines in the presence of dehydrating agents like dicyclohexylcarbodiimide (DCC).
The DCC-promoted synthesis of amides begins with the protonation of DCC by carboxylic acid. The protonation makes it a better acceptor. Next, the addition of carboxylate to the protonated carbodiimide gives a reactive acylating agent.
Subsequently, the amine acts as a nucleophile that attacks the acylating agent to form a tetrahedral intermediate. In the...
Imine formation involves the addition of carbonyl compounds to a primary amine. It begins with the generation of carbinolamine through a series of steps involving an initial nucleophilic attack and then several proton transfer reactions. The second part includes the elimination of water, as a leaving group, to give the imine.
Imines are formed under mildly acidic conditions. A pH of 4.5 is ideal for the reaction.
If the pH is low or the solution is too acidic, the reaction slows down in the...
One of the common methods to prepare nitriles is the dehydration of amides. This method requires strong dehydrating agents like phosphorous pentoxide or boiling acetic anhydride for converting amides to nitriles. Another reagent namely, thionyl chloride also accomplishes the dehydration of amides, where amide acts as a nucleophile. The first step of the mechanism involves the nucleophilic attack by the amide on the thionyl chloride to form an intermediate. In the next step, the electron pairs...
Primary amines react with carbonyl compounds—aldehydes and ketones—to generate imines. Imines consist of a C=N double bond and are named Schiff bases after its discoverer—the German chemist Hugo Schiff. On the other hand, secondary amines react with carbonyl compounds to give enamines. In enamines, the presence of a C=C double bond adjacent to the nitrogen atom leads to the delocalization of the lone pair.
Both imine formation and enamine formation are reversible and...