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Updated: May 25, 2025

A Toolkit to Enable Hydrocarbon Conversion in Aqueous Environments
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A Toolkit to Enable Hydrocarbon Conversion in Aqueous Environments

Published on: October 2, 2012

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细菌利酶活性囊的重塑提高了降解葡萄糖酸盐衍生利的能力

Ming-Yu Liu1, Yu-Yue Wang1, Han-Zhi Li1

  • 1State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi Research Center for Microbial and Enzyme Engineering Technology, College of Life Science and Technology, Guangxi University, Nanning, 530004, China.

World journal of microbiology & biotechnology
|February 26, 2025
PubMed
概括

研究人员设计了一种细菌利酶酶,以有效地排毒菜. 这种改进的酶来源于Paraburkholderia graminis,为降解有害烯提供了更绿色的生物催化剂.

关键词:
3 - - 丁二二的使用方法这是一种4-pentenenitrile.积极的口袋改造活动细菌利酶是一种细菌利酶.蛋白质工程是一种蛋白质工程.

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Nitriles to Ketones: Grignard Reaction00:57

Nitriles to Ketones: Grignard Reaction

Organomagnesium halides, commonly known as Grignard reagents, convert nitriles to ketones and proceed through a nucleophilic acyl substitution. Nitriles react with a Grignard reagent, followed by an aqueous acid, to yield ketones. The reaction introduces a new carbon–carbon bond. The alkyl–magnesium bond in the Grignard reagent is highly polar, so the alkyl carbon develops a carbanionic character and acts as a nucleophile.
The mechanism begins with a nucleophilic attack by the Grignard...
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Preparation of Nitriles01:12

Preparation of Nitriles

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...
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meta-Directing Deactivators: –NO2, –CN, –CHO, –⁠CO2R, –COR, –CO2H01:13

meta-Directing Deactivators: –NO2, –CN, –CHO, –⁠CO2R, –COR, –CO2H

All meta-directing substituents are deactivating groups. These substituents withdraw electrons from the aromatic ring, making the ring less reactive toward electrophilic substitution. For example, the nitration of nitrobenzene is 100,000 times slower than that of benzene because of the deactivating effect of the nitro group. The first step in an electrophilic aromatic substitution is the addition of an electrophile to form a resonance-stabilized carbocation. The energy diagrams for...
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2° Amines to N-Nitrosamines: Reaction with NaNO2

Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
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