Question

What stereoisomers are formed when trans-hex-3-ene is treated with$\mathit{C}{\mathit{H}}_{\mathbf{2}}{\mathbf{I}}_{\mathbf{2}}$ and Zn(Cu)?

Short answer

Answer

Step-by-step solution

Stereoisomers

Stereoisomers are isomers with identical atomic constitution. Enantiomers form a part of stereoisomers.

 Step 2: Reaction of alkene with CH2I2 and Zn(Cu)

Alkenes associate with ${\mathbf{CH}}_{\mathbf{2}}{\mathbf{I}}_{\mathbf{2}}$and Zn(Cu) to give rise to non-haogenated cyclopropanes. This reaction is known as Simmons–Smith reaction.

Treatment of trans-hex-3-ene CH2I2 with and Zn(Cu)

The trans-3-hexene reacts with ${\mathrm{CH}}_2{\mathrm{I}}_2$and Zn(Cu) to form two enantiomers of 1,2-diethylcyclopropane. The position of the substituents in the reactant is retained during product formation.

The stereoisomers formed on the treatment of trans-hex-3-ene with ${\mathrm{CH}}_2{\mathrm{I}}_2$and Zn(Cu) can be given as:

Treatment of trans-hex-3-ene with${\mathbf{CH}}_{\mathbf{2}}{\mathbf{I}}_{\mathbf{2}}$and Zn(Cu)