The reaction of 2-fluoroalkyl-1-iodoethylenes with arylamines () and the subsequent acid promoted transformation of the products were described. In the presence of ZnCl2 and triethylamine, reacted readily with various p-substituted anilines in HMPA under a vacuum of 60–70mmHg to give the corresponding enaminoaldehydes () as a mixture of E-and Z- isomers. Cyclization of, without further purification in refluxing toluene, catalyzed by strong ...