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Updated: Mar 14, 2026

Solid-phase Synthesis of [4.4] Spirocyclic Oximes
05:15

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氧化物及其生物活性的合成和异构化

Dongjin Yu1,2, Jie Hu3, Yixuan Guo3

  • 1School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, China.

Pest management science
|March 13, 2026
PubMed
概括

研究人员开发了E-enoneoxime的新合成方法,E-enoneoxime是Strobilurin杀菌剂中的一个关键成分. 这一进步有助于控制诸如玉米生和大米病等作物疾病.

关键词:
生物活动是生物活动.异构化的异构化运动学的动力学.分子对接的分子对接.一个单晶的水晶.

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Nitrosation of Enols01:19

Nitrosation of Enols

The nitrosation reaction is one of the methods of preparing 1,2-diketones. The enol tautomer of the starting ketone reacts with sodium nitrite in hydrochloric acid, generating the 1,2-diketone after hydrolysis.
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Epoxidation with Peroxy Acids
Epoxidation of alkenes via oxidation with peroxy acids involves the conversion of a carbon–carbon double bond to an epoxide using the oxidizing agent meta-chloroperoxybenzoic acid, commonly known as MCPBA. Since the O–O bond of peroxy acids is very weak, the addition of electrophilic oxygen of peroxy acids to...
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α-Substituted ketones or aldehydes can be synthesized from enamines by the Stork enamine reaction, named after its pioneer Gilbert Stork. Enamines are useful synthetic intermediates where the lone pair on nitrogen is in conjugation with the C=C bond. They resemble enolate ions, as the resonance forms of both species have a nucleophilic α carbon.
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Stereochemical Effects of Enolization

The chiral α-carbon of the carbonyl compound is the stereocenter of the molecule. As shown in the figure below, when such a carbonyl compound undergoes racemization under an acidic or basic condition, an achiral enol is formed.
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Acid-Catalyzed Ring-Opening of Epoxides

Epoxides that are three-membered ring systems are more reactive than other cyclic and acyclic ethers. The high reactivity of epoxides originates from the strain present in the ring. This ring strain acts as a driving force for epoxides to undergo ring-opening reactions either with halogen acids or weak nucleophiles in the presence of mild acid. The acid catalyst converts the epoxide oxygen, a poor leaving group, into an oxonium ion, a better leaving group, making the reaction feasible. The...
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