Answer Happy

3) Draw the curved arrows needed for the proton transfer between A and B in the reaction below. Then, use your knowledge of approximate pką values to determine if the reaction is favored to the right (towards products) or to the left (towards reactants). A B $·$ = 1·* H H pka: pka: Direction the reaction is favored (indicate 'right' or 'left'):_

4. Examine the substitution reaction below and fill in the required information. NaSH EtOH (solvent) Substrate Product(s) 4a. Assign the absolute stereochemistry (R or S) of the substrate. 4b. Identify the nucleophile and the leaving group of the on. 4c. Draw the product(s) of the reaction in the box indicated. 4d. Assign the stereochemistry (R or S) of the product(s).