The reaction on an alkyl halide with RCOOAg produces

Ester

The reaction of an alkyl halide with RCOOAg produces an ester.

The reaction is called the Claisen-Schmidt condensation. It is a nucleophilic acyl substitution reaction that occurs between an alkyl halide and an ester in the presence of a base. The base, in this case RCOOAg, acts as a nucleophile and attacks the alkyl halide, displacing the halide ion. The resulting intermediate then reacts with the ester to form an ester.

The reaction is shown below:

Where R and R' are alkyl groups, X is a halide, and AgX is a silver halide.

The Claisen-Schmidt condensation is a versatile reaction that can be used to synthesize a variety of esters. It is also used in the production of perfumes and flavors.