A) Rosenmunds reaction
B) Stephens reaction
C) Meerwein Ponndorf verley reduction
D) Clemmensens reduction
Correct Answer: A
Solution :
Acid chlorides on reduction with hydrogen in presence of Pd suspended in BaS04 produce aldehyde. This reaction is known as Rosenmunds reaction. \[\underset{acid\text{ }chloride}{\mathop{R\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,Cl}}\,+{{H}_{2}}\xrightarrow[{}]{Pd-BaS{{O}_{4}}}\underset{alkanal}{\mathop{R\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,H}}\,+HCl\]
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