What is the role of NBS in organic chemistry?

What is the role of NBS in organic chemistry?

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.

What does NBS do to an alkene?

Alkenes react with NBS in dry CCl4 under reflux conditions to give allyl bromide. The reaction is initiated by light or peroxide. Although a number of reagents are available for bromination of allylic C-H bond of alkenes, NBS is most commonly used. The reaction is called Wohl-Zigler bromination.

Is NBS a radical initiator?

Standard conditions for using NBS in allylic and/or benzylic bromination involves refluxing a solution of NBS in anhydrous CCl4 with a radical initiator—usually azobisisobutyronitrile (AIBN) or benzoyl peroxide, irradiation, or both to effect radical initiation.

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What is the main reason of using NBS in allylic bromination?

NBS As A Reagent For Allylic Bromination NBS is used as a substitute for Br2 in these cases since Br2 tends to react with double bonds to form dibromides. The advantage of NBS is that it provides a low-level concentration of Br2, and bromination of the double bond doesn’t compete as much.

What is the formula of N-bromosuccinimide?


What is NBS soluble in?

N-Bromosuccinimide/Soluble in
Soluble in acetone, tetrahydrofuran, dimethyl formamide, dimethyl sulfoxide and acetonitrile. Slightly soluble in water and acetic acid.

What is the use of N bromosuccinimide?

N-Bromosuccinimide (NBS) is a brominating and oxidizing agent that is used as source for bromine in radical reactions (for example: allylic brominations) and various electrophilic additions.

What is the formula of N bromosuccinimide?

What is the structure of N-bromosuccinimide?

What is the function of N-bromosuccinimide in allylic bromination?

What is the use of N-bromosuccinimide?

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How do NBS reactions work?

Use solvent NBS and CCl4 as solvent.It is radical reaction. After the reaction is over , treat reaction mixture with water so that succinimide formed becomes soluble in water . then the remove CCl4 layer and evaporate under reduced pressure to get a bromo compd.