Complete the mechanism and draw the final product for the Grignard reaction. Step 1: Add curved arrows. Mg Br: Et₂O Step 2: Aqueous workup. Complete the intermediate, then add curved arrows for the workup step. H | H H Mg Br: © Macmillan -[MgBr]* Step 3: Complete the structure to draw the final product. H― : 0 : H

finish ONE OF THE INDICATED reaction by filling in any Starting materials, reagents or products as needed.

Draw the most stable resonance form for the intermediate in the following electrophilic substitution reaction. LOCH3 LOCH3 HNO3 / CH3CO₂H O₂N • You do not have to consider stereochemistry. • Include all valence lone pairs in your answer. ● In cases where there is more than one answer, just draw one.

The mechanism proceeds through a first cationic intermediate, intermediate 1. Nucleophilic attack leads to intermediate 2, which goes on to form the final product. In cases that involve negatively charged nucleophile, the attack of the nucleophile leads directly to the product. H. Br + CH3OH Br Intermediate 2 (product) Intermediate 1 In a similar fashion, draw intermediate 1 and intermediate 2 (final product) for the following reaction. OCH3 Cl2 MEOH ĆI racemic mixture Pay attention to the reactants, they may differ from the examples. In some reactions, one part of the molecule acts as the nucleophile. • You do not have to consider stereochemistry. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate intermediate 1 and intermediate 2 using the the dropdown menu. → symbol from