Elimination Reaction
a. Comment of the fact that erythro-2,3-dibromo-3-phenylpropanoic acid undergoes elimination by an E1 pathway in water solvent, but by and E2 pathway when acetone is used as the solvent.
b. A benzylic carbonation is generated under the water solvent would the presencec of a para CH3O- group on the benzene ring increase or decrease the stablility of the benzylic carbocation?