(Solved): 1. 9-borobicyclononane (9-BBN) is a hydroboration reagent that provides excellent regioselectivity. ...

1. 9-borobicyclononane (9-BBN) is a hydroboration reagent that provides excellent regioselectivity. If 9-BBN were used to hydroborate one mole of 1-octene, how many moles of 9-BBN would be required? Explain. 2. Propose a mechanism for the reaction of \( \mathrm{BH}_{3} \) with water. The products of the first reaction are \( \mathrm{H}_{2} \) gas and \( \mathrm{BH}_{2} \mathrm{OH} \). What are the products after reaction with two additional water molecules? 3. Draw the Lewis-Acid base adduct with formal charges for the reaction of \( \mathrm{BH}_{3} \) with diethyl ether. 4. If the alkene below were subjected to hydroboration-oxidation, predict all of the possible products including stereoisomers.