Mark All the Sequences of Reactions That Convert a Carboxylic

question 5

Multiple Choice

Mark all the sequences of reactions that convert a carboxylic acid to an aldehyde.
(More than one answer is possible.)

• A) 1) CH₂N₂ 2) DIBAL 3) H₃O⁺
• B) 1) NaBH₄ 2) H₃O⁺ 3) PCC
• C) 1) SOCl₂ 2) LiAl(Ot-Bu)₃H
• D) 1) LiAlH₄ 2) Ag(NH₃)₂OH

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