Question

Explain about Rosenmund Reduction Reaction....!!!

write the reaction and also tell about the catalysts used in this reaction!

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Answer 1

$\mathrm\green{Answer:-}$

The Rosenmund reduction is a hydrogenation process in which an acyl chloride is selectively reduced to an aldehyde.

The reaction was named after Karl Wilhelm Rosenmund, who first reported it in 1918.

... However, for certain reactive acyl chlorides the activity must be reduced further, by the addition of a poison.

$\mathrm\red{Reaction:-}$

The Rosenmund reduction is a hydrogenation process in which an acyl chloride is selectively reduced to an aldehyde.

The reaction, a hydrogenolysis, is catalysed by palladium on barium sulfate, which is sometimes called the Rosenmund catalyst.

$\mathrm\blue{About\: xylene:-}$

chlorides was the original method of Kosenmund2y which involves boiling toluene or xylene as the solvent and sulfur-regulated palladium on barium sulfate as the catalyst.

With this modification acid chlorides can be reduced on palladium at room temperature and at atmos- pheric pressure.

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Answer 2

Answer:

The Rosenmund reduction is a hydrogenation process in which an acyl chloride is selectively reduced to an aldehyde. The reaction was named after Karl Wilhelm Rosenmund, who first reported it in 1918. Rosenmund catalyst can be prepared by reduction of palladium(II) chloride solution in the presence of BaSO4.

EXPLANATION:

The Rosenmund reaction is a hydrogenation process where molecular hydrogen reacts with the acyl chloride in the presence of catalyst palladium on barium sulfate. The barium sulfate reduces the activity of the palladium due to its low surface area, thereby preventing over reduction.

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