Answer Happy

Question 3. 6 marks total. =) An E2 reaction will occur when the beta hydrogen and the leaving group are anti-coplanar. In the following reaction only one tetrasubstituted alkene is produced. Complete the wedge and dash drawing (structure B) and draw the tetrasubstituted final product (structure C). 1 mark for correctly adding groups to the middle diagram. 1 mark for correct alkene. CH₂ CH₂ Br CH₂ONa CH₂OH Br CH₂0 complete by adding substituents with correct stereochemistry 1. KCN (1 equiv.), DMSO 2. CH₂CH₂ONa, CH₂CH₂OH Br ) Draw the substitution product produced in the following two-step reaction. The nucleophile selectively reacts once in each step. Is the product optically active? 1 mark for correct substitution. Use dashes and wedges to show stereochemistry. 1 mark Would a solution of the product be optically active? www 1. NaN, (1 equiv.), DMF oso,CF 2 CH₂SH complete by adding substituents with correct stereochemistry Yes Draw the substitution products for the following two step reaction. The nucleophile selectively reacts once in each step. Is the resulting product chiral or achiral? 1 mark for correct substitution products. Use dashes and wedges to show stereochemistry. 1 mark Would a solution of the resulting mixture be optically active. major product(s) Would a solution of the resulting mixture be optically active? No major product(s) Would a solution of the resulting mixture be optically active? Yes No