1- Bromo-l,2-diphenylpropane

Upon E2 elimination. (I R.2R)-1 -bromo-1,2-diphenylpropane produces only (Z)-1,2-diphenylpropene. This result demonstrates that the reaction occurs entirely from the anti-periplanar conformation shown. The enantiomer of this compound, (IS,2S)-l-bromo-l,2-diphenylpropane, also produces only the (Z)-alkene when it undergoes an E2 elimination reaction. (To simplify viewing, the phenyl groups are shown as single blue atoms in the ball-and-stick models.)... 

Dehydrohalogenation of l-bromo-l,2-diphenylpropane gives, as we would expect, 1,2-diphenylpropene. But the halide contains two chiral centers, and we... 

Treatment of the following stereoisomer of l-bromo-l,2-diphenylpropane with sodium ethoxide in ethanol gives a single stereoisomer of 1,2-diphenylpropene. Predict whether the product has the E configuration or the Z configuration. 

What product would be expected from the elimination reaction of (l/ ,25j-l-bromo-1,2-diphenylpropane using sodium ethoxide in ethanol as the solvent ... 

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