Identify A, B, C, D, E, R and R’ in the following:

Since D of D₂O gets attached to the carbon atom to which MgBr is attached, C is isopropylmagnesium bromide

Therefore, the compound R-Br is 2- bromopropane

When an alkyl halide is trated with Na in the presence of ether, a hydrocarbon containing double bond the number of carbon atom as present in the original halide is obtained as product. This is known as Wurtz raction.