Acylation

Relative reactivity of carbonyl compounds towards nucleophile? 1) Acyl halide > Acid anhydride > Aldehyde > Carboxylic acid. 2) Carboxylic acid > Aldehyde > Acid anhydride > Acyl halide. 3) Acyl halide > Aldehyde > Acid anhydride > Carboxylic acid. 4) Acid anhydride > Acyl halide > Carboxylic acid > Aldehyde.

Which of the following cannot be acylated ?

How are phenols acylated?

Which of the following cannot be acylated ?

The conversion of O-acylated phenol in presence of AlCl_(2) to C-acylated phenol is an example for this type of organic reaction .