Related Experiment Video

Updated: May 31, 2026

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
11:45

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles

Published on: August 22, 2018

(3E,5E)-1-Acryloyl-3,5-bis-(2-chloro-benzyl-idene)piperidin-4-one

Alireza Basiri, Vikneswaran Murugaiyah, Hasnah Osman

    Acta Crystallographica. Section E, Structure Reports Online
    |July 15, 2011
    PubMed

    More Related Videos

    One-pot Microwave-assisted Conversion of Anomeric Nitrate-esters to Trichloroacetimidates06:00

    One-pot Microwave-assisted Conversion of Anomeric Nitrate-esters to Trichloroacetimidates

    Published on: January 15, 2018

    Synthesis of Esters Via a Greener Steglich Esterification in Acetonitrile06:52

    Synthesis of Esters Via a Greener Steglich Esterification in Acetonitrile

    Published on: October 30, 2018

    Related Concept Videos

    [3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement01:21

    [3,3] Sigmatropic Rearrangement of 1,5-Dienes: Cope Rearrangement

    The Cope rearrangement is classified as a [3,3] sigmatropic shift in 1,5-dienes, leading to a more stable, isomeric 1,5-diene. The reaction involves a concerted movement of six electrons, four from two π bonds and two from a σ bond, via an energetically favorable chair-like transition state.
    Acidity of 1-Alkynes02:42

    Acidity of 1-Alkynes


    The acidic strength of hydrocarbons follows the order: Alkynes > Alkenes > Alkanes. The strength of an acid is commonly expressed in units of pKa — the lower the pKa, the stronger the acid. Among the hydrocarbons, terminal alkynes have lower pKa values and are, therefore, more acidic. For example, the pKa values for ethane, ethene, and acetylene are 51, 44, and 25, respectively, as shown here.
    [4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction01:16

    [4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction

    The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
    Benzene to 1,4-Cyclohexadiene: Birch Reduction Mechanism01:18

    Benzene to 1,4-Cyclohexadiene: Birch Reduction Mechanism

    Birch reduction uses solvated electrons as reducing agents. The reaction converts benzene to 1,4-cyclohexadiene. The reaction proceeds by the transfer of a single electron to the ring to form a benzene radical anion. This anion is highly basic—it abstracts a proton from the alcohol to form a cyclohexadienyl radical. Another single electron transfer gives the cyclohexadienyl anion. A proton transfer from the alcohol forms 1,4-cyclohexadiene. Since this reduction occurs via radical anion...
    Nomenclature of Carboxylic Acid Derivatives: Acid Halides, Esters, and Acid Anhydrides01:16

    Nomenclature of Carboxylic Acid Derivatives: Acid Halides, Esters, and Acid Anhydrides

    Naming Acid Halides
    The IUPAC and common names of acid halides are derived from the corresponding carboxylic acids, by changing “ic acid” to “yl halide.” For example, as shown below, the IUPAC name ethanoyl chloride is derived from ethanoic acid, and the common name, acetyl chloride, is obtained from acetic acid.
    α-Hydroxy Ketones via Reductive Coupling of Esters: Acyloin Condensation Overview01:19

    α-Hydroxy Ketones via Reductive Coupling of Esters: Acyloin Condensation Overview

    The pinacol and McMurry reactions involve the reductive coupling of ketones or aldehydes. Similarly, the bimolecular reductive coupling of two ester molecules in the presence of sodium metal in an aprotic solvent yields an α-hydroxy ketone product. The α-hydroxy ketone is also called acyloin, so the reaction is referred to as ‘acyloin condensation.’