Question 1 [11] Study the structure of the amino acid below i) Give the maximum number of possible stereoisomers that this amino acid has. [1] ii) Draw all the possible stereoisomers for the amino acid. [6] iii) Assign the
R,S
configurations to any two of the isomers you have drawn. [4] Question 2 [3] A mixture of the 2-butanol enantiomers showed a specific rotation of +5.74 . What is the enantiomeric excess of the (S)-(+)-2-butanol? An enantiomerically pure sample of (S)-(+)-2-butanol shows a specific rotation of +13.52