Question

Draw structural formulas for organic products A and B in the window below.

Li Cul CHзCH2CH-CH2Br В А pentane

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Answer #1

The structure of A will be CH3CH2CH2CH2Li  ,and

The structure of B will be CH3CH2CH2CH2CuLi.

the detailed reaction explanation is given below.

In the first step of reactions , 1 bromo butane is treating with Li in the presence of pentane solvent. The resulting product will be Butyl lithium.

And when this , Butyl lithium is treated with Copper iodide , The organocuprate is formed. Which is also called Gilman reagent.

the reaction is given below.

CH3CH2CH2CH2Br + Li pentane --------> CH3CH2CH2CH2Li  + LiBr

And ,

CH3CH2CH2CH2Li + CuI -------------> CH3CH2CH2CH2CuLi which is known as Gilman reagent. ​​​​​

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