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

H_{2}

H_{2}

C H_{2}

\to

R — C H_{2}

C H_{2} — C H O

H_{2}

H_{2} + C O + R - C H = C H_{2} \to R - C H_{2} - C H_{2} - C H O

R - C H_{2} - O H C u - -- \to 573 K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C H_{3} - C H = C H_{2} + H_{2} O^{+} . . . . . . . . . . . . . . . . . . . . . . . . . . .

{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

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