(Solved): 7) In the reaction of carbonyl compounds with LiAlH \( { }_{4} \), the effective reducing species i ...

7) In the reaction of carbonyl compounds with LiAlH \( { }_{4} \), the effective reducing species is: a) \( \mathrm{Li}^{+} \) b) \( \mathrm{Al}^{+3} \) c) \( \mathrm{AlH}_{4}{ }^{-} \) d) \( \mathrm{AlH}_{3} \) e) \( \mathrm{H}^{-} \) A B c D 9) Which of the reagents listed below would efficiently accomplish the transformation of \( \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}^{2}=\mathrm{CHCH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{OH}_{1} \) into \( \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}^{2} \mathrm{CHCH}_{2} \mathrm{CH}_{2} \mathrm{CHO} \) ? a) \( \mathrm{KMnO}_{4}, \mathrm{OH}^{-} \) b) \( \mathrm{CrO}_{3} \mathrm{IH}_{2} \mathrm{SO}_{4} \) c)(i) \( \left(\mathrm{COCl}_{2}\right. \), DMSO, \( -60^{\circ} \mathrm{C} \) (ii) \( \mathrm{Et}_{3} \mathrm{~N} \) d) \( \mathrm{Br}_{2}, \mathrm{CCl}_{4} \) e) Two of these choices. A B c D. E 10) Which of the reagents listed below would efficiently accomplish the transformation of \( \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{C}_{2} \mathrm{CCH}_{2} \mathrm{CH}_{2} \mathrm{CHO}_{\mathrm{O}} \) into \( \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{C}=\mathrm{CCH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{OH} \) ? a) \( \mathrm{KMnO}_{4} \) b) \( \mathrm{NaBH}_{4} \) c) \( \mathrm{Br}_{2} \) in \( \mathrm{CCl}_{4} \) d) \( \mathrm{H}_{2}, \mathrm{Ni} \) e) Two of these choices. B 11) What is the major product from the reaction of 2-hexanol with \( \mathrm{KMnO}_{4} \) ? a) \( \mathrm{CH}_{3} \mathrm{CO}_{2} \mathrm{H} \) b) \( \mathrm{CH}_{3}\left(\mathrm{CH}_{2}\right)_{3} \mathrm{CO}_{2} \mathrm{H} \) c) \( \mathrm{CH}_{3}\left(\mathrm{CH}_{2}\right)_{3} \mathrm{CCH}_{3} \) d) \( \mathrm{CH}_{3}\left(\mathrm{CH}_{2}\right)_{4} \mathrm{CO}_{2} \mathrm{H} \) e) Two of these choices. 12) Organomagnesium halides are known as a) Jones reagent b) Grignard reagent c) Swern reagent d) none A B C