Question

How will you bring about the following conversions in not more than two steps? Benzoic acid to Benzaldehyde

Answer 1

This Reaction can be easily brought by using the suitable catalytic conditions.

Reaction is shown below,

Benzoic acid -------- SO₂Cl₂ and H₂/Pd, BaSO₄ ------- Benzaldehyde.

In the Presence of the Quiniline and Palladium this reaction will occur and BaSO₄ or Barium sulfate will be the solution which will favor this reaction and will acts as a solvent.

Correct equation will be,

C₆H₅COOH -----------⇒ C₆H₅CHO

Refers to the attachment please.

Hope it helps.

Answer 2

HEY DEAR ...✌️

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Here's , Your Answer ...

=) ⏺️] Benzoic acid =)

(i) Molecular Weight = 122.12 g/mol .

(ii) Molecular formula = C7H6O2 .


⏺️] Benzaldehyde =)

(i) Molecular Weight = 106.12 g/mol .

(ii) Molecular Formula = C7H6O .


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=) Conversion :-

C6H5COOH (presence of SOCl2) ------------> C6H5COCl --------------> (presence of Pd + BaSO4) C6H5CHO .


This Conversion is also known as Rosendmund's reduction .

=) Rosendmund's reduction = Acid chlorides are converted to corresponding aldehydes in the presence of palladium deposited over BaSO4 partially poisoned with sulphur or quinoline .

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HOPE , IT HELPS ... ✌️