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Determine whether each of these reactions occur through an SN1 , SN2 , E1, or E2 mechanism. A. A cyclohexane ring with a bromine substituent is treated with sodium tert butoxide in tert butanol. The product is cyclohexene and sodium bromide. A. The mechanism of Reaction A is: SN1 SN2 E1 E2

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Answer:

E2

Explanation:

We can generally regard the bromocyclohexane as having a secondary carbon atom to Which the bromine atom is attached.

Tert-butoxide in tert-butanol favours the formation of an alkene (elimination) leading to the predominance of the less substituted alkene.

Generally, bulky bases such as tert-butoxide favours elimination by E2 mechanism over substitution.

The mechanism of Reaction A is E2 and also mechanism over substitution.

What is Bromine substituent?

We can generally regard the Bromo cyclohexane as maintaining a secondary carbon atom to Which the bromine atom is connected.

Tert-butoxide in tert-butanol prefers the formation of an alkene (elimination) leading to the predominance of the undersized substituted alkene. Therefore, Commonly, bulky bases such as tert-butoxide favors elimination by the E2 mechanism over substitution.

Find more information about Bromine substituent here:

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