Mass 2,3-dibromo-3-phenylpropanoic acid= 0.394g

MP= 201-203 degree C

TLC SM= 1.5/4.8

TLC R= 1.5/4.8

determine the yield and melting point at the time. From the melting point, identify which stereoisomer has been produced and, therefore, which mechanism the bromination reaction followed.

Reagents-

2*2mL- Hexane

2*20 drops Bromine 1M in CH2Cl2

Bromine (20mL,1M in CH2Cl3)

250 mg- trans-cinnamic acid(FW=148.16)

2mL -Bromine 1M in CH2Cl2

5mL- Dichloromethane(solvent)