2-Acetylamidomethyl-4-(4-fluorobenzyl)morpholine is a useful pharmaceutical intermediate for the synthesis of Mosapride, which is a gastroprokinetic agent that acts as a selective 5HT₄ agonist.

Synthesis and Biological Activity of 4-Amino-5-chloro-2-ethoxy-3-hydroxybenzamides, Metabolites of a New Gastroprokinetic Agent, Mosapride. [1]

Reference:

[1] S.KATO, et al, Chem. Pharm. Bull.(Tokyo), 1996, 44(8), pp 1484-1492.