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 (98.71 KiB) Viewed 9 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. CH₂ CH3 I XX-X Br CH₂ONa CH3OH CI CH,O: complete by adding substituents with correct stereochemistry 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? 1. KCN (1 equiv.), DMSO 2. CH3CH₂ONA, CH3CH₂OH Br Br OSO₂CF3 1. NaN3 (1 equiv.), DMF 2. CH₂SH complete by adding substituents with correct stereochemistry major product(s) Would a solution of the resulting mixture be optically active? Yes 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. No Yes major product(s) Would a solution of the resulting mixture be optically active? No