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Preparation of Epoxides03:00

Preparation of Epoxides

9.4K
Overview
Epoxides result from alkene oxidation, which can be achieved by a) air, b) peroxy acids, c) hypochlorous acids, and d) halohydrin cyclization.
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...
9.4K
Preparation of Amides01:29

Preparation of Amides

4.1K
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...
4.1K
Preparation of Nitriles01:12

Preparation of Nitriles

2.7K
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...
2.7K
Preparation and Reactions of Thiols02:33

Preparation and Reactions of Thiols

7.6K
Thiols are prepared using the hydrosulfide anion as a nucleophile in a nucleophilic substitution reaction with alkyl halides. For instance, bromobutane reacts with sodium hydrosulfide to give butanethiol.
7.6K
Preparation of Acid Anhydrides01:07

Preparation of Acid Anhydrides

4.1K
One of the methods for preparing symmetrical or unsymmetrical acid anhydrides involves the treatment of acid chlorides with the sodium salt of carboxylic acids. The reaction proceeds via a nucleophilic acyl substitution.
The carboxylate ion acts as a nucleophile that attacks the carbonyl carbon of the acid chloride to form a tetrahedral intermediate. Subsequently, the re-formation of the carbonyl group with the loss of the chloride ion as a leaving group leads to the formation of an acid...
4.1K
Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

5.8K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
5.8K

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Updated: Feb 14, 2026

Modeling The Lifecycle Of Ebola Virus Under Biosafety Level 2 Conditions With Virus-like Particles Containing Tetracistronic Minigenomes
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Preparing for the next Ebola epidemic.

Michael Gross1

  • 1Michael Gross is a science writer based at Oxford. He can be contacted via his web page at www.michaelgross.co.uk.

Current Biology : CB
|February 8, 2018
PubMed
Summary
This summary is machine-generated.

Research is advancing Ebola virus understanding, treatment, and prevention strategies following the West African epidemic. Despite progress, the Ebola virus remains a significant threat, requiring continued scientific inquiry.

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Area of Science:

  • Virology
  • Epidemiology
  • Public Health

Background:

  • The West African Ebola virus epidemic was a catastrophic global health crisis.
  • International collaboration was crucial in overcoming the epidemic.

Purpose of the Study:

  • To outline current research directions in Ebola virus understanding.
  • To highlight advancements in Ebola treatment and prevention.
  • To emphasize the ongoing threat of the Ebola virus.

Main Methods:

  • Review of recent scientific literature.
  • Analysis of ongoing research initiatives.
  • Expert commentary on the state of Ebola research.

Main Results:

  • Initial research steps are being taken to improve understanding of the Ebola virus.
  • Progress is being made in developing better treatments and prevention methods.
  • Significant scientific questions regarding Ebola remain unanswered.

Conclusions:

  • Ebola virus continues to pose a threat despite past efforts.
  • Continued research is essential for future control and eradication.
  • Further scientific investigation is needed to address remaining knowledge gaps.