Related Experiment Video

Updated: May 31, 2026

Preparation of Contiguous Bisaziridines for Regioselective Ring-Opening Reactions
04:38

Preparation of Contiguous Bisaziridines for Regioselective Ring-Opening Reactions

Published on: July 28, 2022

S,S'-(Pyridazine-3,6-di-yl)dithio-uronium dichloride methanol monosolvate

Jörg Hübscher, Lidiya Izotova, Samat Talipov

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

    More Related Videos

    Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles11:45

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

    Published on: August 22, 2018

    Modification and Functionalization of the Guanidine Group by Tailor-made Precursors09:45

    Modification and Functionalization of the Guanidine Group by Tailor-made Precursors

    Published on: April 27, 2017

    Related Concept Videos

    Preparation and Reactions of Sulfides02:26

    Preparation and Reactions of Sulfides

    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.
    Diazonium Group Substitution: –OH and –H01:19

    Diazonium Group Substitution: –OH and –H

    Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.
    Chirality at Nitrogen, Phosphorus, and Sulfur02:30

    Chirality at Nitrogen, Phosphorus, and Sulfur

    Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
    A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...