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Related Concept Videos

Preparation of Epoxides03:00

Preparation of Epoxides

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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...
9.3K
Preparation of Amides01:29

Preparation of Amides

4.0K
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...
4.0K
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

4.0K
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...
4.0K
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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A Rapid, Simple, and Standardized Homogenization Method to Prepare Antigen/Adjuvant Emulsions for Inducing Experimental Autoimmune Encephalomyelitis
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Preparing and Using Adjuvants.

Edward A Greenfield

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    This summary is machine-generated.

    Adjuvants stimulate immune responses, enhancing antibody production against antigens. This study details the preparation and application of Freund

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    Area of Science:

    • Immunology
    • Biochemistry

    Background:

    • Adjuvants are critical for eliciting robust antibody responses to soluble antigens.
    • Freund's adjuvant is a widely utilized adjuvant in research settings.

    Purpose of the Study:

    • To describe the preparation and use of Freund's adjuvant.
    • To introduce and discuss four alternative adjuvants: Ribi, Hunter's TiterMax, Magic Mouse, and aluminum hydroxide.

    Main Methods:

    • Detailed protocols for the preparation of Freund's adjuvant.
    • Methodologies for the application of various adjuvants in immunological studies.

    Main Results:

    • Successful preparation and application of Freund's adjuvant demonstrated.
    • Characterization of Ribi, Hunter's TiterMax, Magic Mouse, and aluminum hydroxide as alternative adjuvants.

    Conclusions:

    • Freund's adjuvant remains a valuable tool for enhancing antibody responses.
    • Alternative adjuvants offer diverse options for optimizing immune stimulation in research.