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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...
9.4K
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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Preparation for recertification.

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    Journal of Post Anesthesia Nursing
    |February 1, 1992
    PubMed
    Summary
    This summary is machine-generated.

    Postanesthesia nursing certification is valid for 3 years and renewable via re-examination or continuing education. This program offers diverse educational options for recertification points.

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    Area of Science:

    • Nursing
    • Anesthesiology

    Background:

    • Postanesthesia nursing certification is crucial for specialized patient care.
    • Maintaining certification ensures continued competency in postanesthesia nursing.

    Purpose of the Study:

    • To outline the recertification process for postanesthesia nurses.
    • To inform nurses about available pathways for maintaining their certification.

    Main Methods:

    • Describing the renewal requirements for postanesthesia nursing certification.
    • Detailing the Continuing Education Recognition Program (CERP) as a recertification option.

    Main Results:

    • Certification is valid for three years.
    • Recertification can be achieved through re-examination or the CERP.
    • The CERP provides access to numerous educational opportunities for earning Continuing Education Recognition Points (CERPs).

    Conclusions:

    • The recertification process for postanesthesia nurses is flexible.
    • The CERP supports ongoing professional development and certification maintenance.