a) An E2 reaction will occur when the beta hydrogen and the leaving group are anti-coplanar. In the following reaction o

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A An E2 Reaction Will Occur When The Beta Hydrogen And The Leaving Group Are Anti Coplanar In The Following Reaction O 1 (118.49 KiB) Viewed 19 times

a) 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. CH3 Br H CH3 Br CI CH₂ONa CH3OH Br b) 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? CH ₂0 complete by adding substituents with correct stereochemistry 1. KCN (1 equiv.), DMSO 2. CH3CH₂ONA, CH₂CH₂OH Br OSO₂CF3 major product(s) Would a solution of the resulting mixture be optically active? No c) 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. 1. NaN3 (1 equiv.), DMF 2. CH₂SH X complete by adding substituents with correct stereochemistry Yes major product(s) Would a solution of the resulting mixture be optically active? Yes No