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N-Bromosuccinimide or NBS is a chemical reagent used in radical substitution, electrophilic addition, and electrophilic substitution reactions in organic chemistry. NBS can be a convenient source of Br • , the bromine radical.
In the Goldfinger mechanism, the purpose of the NBS is simply to maintain a very low concentration of molecular bromine, while in the Bloomfield mechanism, its purpose is the generation of the initial radical used in the reaction, [11] which again can be quite a difficult process. [12]
The oldest organic reactions are combustion of organic fuels and saponification of fats to make soap. Modern organic chemistry starts with the Wöhler synthesis in 1828. In the history of the Nobel Prize in Chemistry awards have been given for the invention of specific organic reactions such as the Grignard reaction in 1912, the Diels–Alder ...
Hofmann Isonitrile synthesis, Carbylamine reaction; Hofmann product; Hofmann rearrangement; Hofmann–Löffler reaction, Löffler–Freytag reaction, Hofmann–Löffler–Freytag reaction; Hofmann–Martius rearrangement; Hofmann's rule; Hofmann–Sand reaction; Homo rearrangement of steroids; Hooker reaction; Horner–Wadsworth–Emmons ...
Reagents are "substances or compounds that are added to a system in order to bring about a chemical reaction or are added to see if a reaction occurs." [1] Some reagents are just a single element. However, most processes require reagents made of chemical compounds. Some of the most common ones used widely for specific reactive functions are ...
CHPhCH 2 OSO 3 −, that add further alkenes via formation of C-C bonds. Many styrene and fluoroalkene polymers are produced in this way. In atom transfer radical polymerization (ATRP), carbon-halides reversibly generate organic radicals in the presence of transition metal catalyst. General ATRP Reaction. A. Initiation. B. Equilibrium with ...
Achmatowicz reaction; Acylation; Adamkiewicz reaction; Adams decarboxylation; Alkene carboamination; Alkenylaluminium compounds; Alkylation; Carbonyl condensation; Allylic stannane addition; Alpha cleavage; Amination; Amine alkylation; Amino acid N-carboxyanhydride; Aminoacylation; Armed and disarmed saccharides; Asymmetric addition of ...
In organic chemistry, neighbouring group participation (NGP, also known as anchimeric assistance) has been defined by the International Union of Pure and Applied Chemistry (IUPAC) as the interaction of a reaction centre with a lone pair of electrons in an atom or the electrons present in a sigma or pi bond contained within the parent molecule but not conjugated with the reaction centre.