In each reaction box place, the best reagent and conditions from the list below.

In each reaction box, place the best reagent and conditions from the list below. \begin{array}{lll} \mathrm{H}_{2} , Lindlar catalyst & \mathrm{H}_{2} \mathrm{O}, \mathrm{H}_{2} \mathrm{SO}_{4}, \mathrm{HgSO}_{4} & \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{Br} \\ \hline \mathrm{BH}_{3} / \mathrm{THF} & \mathrm{HBr} 2-equiv. & \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{Br} \\ \mathrm{H}_{2} \mathrm{O}_{2} /NaOH & \mathrm{CH}_{3} \mathrm{Br} & \mathrm{Br}_{2} 1-equiv. \\ \mathrm{NaNH}_{2} & \mathrm{NaOH} & \mathrm{Br}_{2} 2 -equiv. \end{array}

In each reaction box, place the best reagent and conditions from the list below. (A reagent may be used more than once.)

\begin{tabular}{lll} \( \mathrm{CH}_{3} \mathrm{Br} \) & \( \mathrm{H}_{2} \), Lindlar catalyst & \( \mathrm{H}_{3} \mathrm{O}^{+} \) \\ \hline \( \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{Br} \) & \( \mathrm{BH}_{3} / \mathrm{THF} \) & \( \circ \) \\ \( \mathrm{NaOH} \) & \( \mathrm{H}_{2} \mathrm{O}_{2} \mathrm{NaOH} \) & \( \underline{\searrow} \) \\ \hline \( \mathrm{NaBH}_{4} \) & \( \mathrm{NaNH}_{2} \) & \( \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{Br} \) \\ \hline \end{tabular} \( \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{Br} \)

In each reaction box, place the best reagent and conditions from the list below. There is more than one possible route. Note: If one or more reagents are incorrectly placed, a single red X will appear on the top left. CH3CHO, 2H2O CH2CH2CH2CHO, 2H2O CH3(CH2)2MgBr, H2O CH3MgBr, H2O CH3(CH2)2OH Mg CH3Br PCC HOCH2CH2OH, H+ H3O+

In each reaction box, place the best reagent and conditions from the list below. (A reagent may be used more than once.) Hint: step 1 is conducted at -78℃

In each reaction box, place the best reagent and conditions from the list below.

bupropion (Zyban^TM) (used to help people quit smoking)

In each reaction box, place the best reagent and conditions from the list below. 3-Hexanone should be the exclusive final product. (A reagent may be used more thanonce.)