Organic Chem - Alkenes: Electrophilic addition of HBr to a 5 carbon alkene Part

Question

Organic Chem - Alkenes: Electrophilic addition of HBr to a 5 carbon alkene Part A What five-carbon alkene will form the same product whether it reacts with HBr in the presence of a peroxide or with HBr in the absence of a peroxide? Draw the molecule on the canvas
Organic Chem - Alkenes: Electrophilic addition of HBr to a 5 carbon alkene Organic Chem - Alkenes: Electrophilic addition of HBr to a 5 carbon alkene Part A What five-carbon alkene will form the same product whether it reacts with HBr in the presence of a peroxide or with HBr in the absence of a peroxide? Draw the molecule on the canvas
Part A What five-carbon alkene will form the same product whether it reacts with HBr in the presence of a peroxide or with HBr in the absence of a peroxide? Draw the molecule on the canvas
Part A What five-carbon alkene will form the same product whether it reacts with HBr in the presence of a peroxide or with HBr in the absence of a peroxide? Draw the molecule on the canvas

Explanation / Answer

Addition of HBr to an alkene in the absence of a peroxide involves ionic species: a hydrogen ion [H+} adds to the double bond forming a positively charged CARBOCATION. Subsequent reaction with a bromide ion [Br-] results in the formation of a bromoalkane.

This is called Markovnikov addition


Addition of HBr to an alkene in the presence of a peroxide involves free radicals: here, a bromine free radical [Br

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