<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>In the presence of the chiral chloride (NHC), α‐aroyloxyaldehydes undergo stereoselective cyclization with (E)‐ and (Z)‐trifluoromethyl enones to afford syn‐ and anti‐dihydropyranones.</p> </abstract>