What is the stereochemistry of the product formed when an alkene reacts with bromine solution?
anti stereochemistry
This is anti stereochemistry, which is defined as the two bromine atoms come from opposite faces of the double bond. The product is that the bromines add on trans to each other.
What happens when alkene is added to bromine?
Alkenes react in the cold with pure liquid bromine, or with a solution of bromine in an organic solvent like tetrachloromethane. The double bond breaks, and a bromine atom becomes attached to each carbon. The bromine loses its original red-brown color to give a colorless liquid.
What is the stereochemistry of addition of Br2 across a double bond?
Addition Of Bromine (Br2) To Alkenes Is Stereoselective, Giving “Anti” Addition Stereochemistry.
Does bromine add stereospecific?
The addition of bromine to alkenes is a stereospecific reaction.
What happens when bromine is added to hexene?
Bromine adds across the double bond of cyclohexene forming a clear solution of trans-1,2-Dibromocyclohexane. The cylinder containing cyclohexane remains colored.
What is anti addition of bromine?
Description: Treatment of alkenes with bromine (Br2) gives vicinal dibromides (1,2-dibromides). Notes: The bromines add to opposite faces of the double bond (“anti addition”). Sometimes the solvent is mentioned in this reaction – a common solvent is carbon tetrachloride (CCl4).
What changes in color when bromine reacts with an alkene?
Answer and Explanation: Alkene is an unsaturated compound. Bromine is dark red in color. When bromine is treated with alkene, it loses its dark red color and becomes colorl…
Is halogenation of alkenes electrophilic addition?
Halogens can act as electrophiles to attack a double bond in alkene. Double bond represents a region of electron density and therefore functions as a nucleophile.
Why bromination of alkene is stereospecific?
Bromination of alkenes is stereospecific because the geometry of the starting alkene determines which diastereoisomer is obtained as the product. Bromination of Z– and E-2-butene in acetic acid produces a single diastereoisomer in each case, both of which are different from each other.
Is bromination of an alkene a stereoselective process?
It’s stereoselective. The two atoms that form new bonds to carbon add to opposite faces of the alkene (“anti” stereoselectivity)
What would be observed when bromine water is added to hexane and to hexene?
The bromine water turns colourless confirming the presence of an Hexene. Hexane is saturated and contain single bonds.It does not undergo any reaction with bromine.