$R - C O - R ? \to R - C H_{2} - R$
How many among the following regents can make the conversion?
$(i) Z n - H g / H C l, (i i) L i A l H_{4}, (i i i) C H C l_{3} / K O H$
$(i v) N_{2} H_{4} / O H^{-}, (v) H S - C H_{2} - C H_{2} - S H, H_{2} / N i$
$(v i) S e O_{2}, (v i i) P C C$

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Solution

Clemmensen reduction $(Z n - H g / H C l)$ , Wolff Kishner reduction $(N_{2} H_{4} / O H^{-})$ and raney-nickel desulphurisation $(H S - C H_{2} - C H_{2} - S H, H_{2} / N i)$ will reduce the carbonyl group to methylene $(C H_{2})$ group.

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Similar questions

R - C O - R ? \to R - C H_{2} - R

(i) Z n - H g / H C l, (i i) L i A l H_{4}, (i i i) C H C l_{3} / K O H

(i v) N_{2} H_{4} / O H^{-}, (v) H S - C H_{2} - C H_{2} - S H, H_{2} / N i

(v i) S e O_{2}, (v i i) P C C

Ph - {CH}_{2} - {CH}_{2} - {CH}_{2} - OH PCC - - \to

{C H}_{2} - C O - C H_{2} - {C H}_{2} - {C H}_{2} - {C H}_{3}

{C H}_{3} - C H_{2} - {C H}_{2} - C O O H

{C H}_{3} {- C H}_{2} - {C H}_{2} - {C H}_{2} - C H O

{C H}_{3} - {C H}_{2} - O H

C H_{2} = C H_{2}, N H_{3}, H_{2} O; C H_{3} - C H_{3} H F, C H_{3} C H_{2} - O H, C H_{3} - C H_{2 -} S H,

C H_{3} - C H_{2} - C H_{2} - O H

H C O O H

C H_{3} - C H_{2} - C H = C H_{2}

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