Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Lewis acid-ene cyclization of ω-olefinic trifluoromethyl ketones provides trifluoromethyldecalins and trifluoromethylhydrindans in high yields. Similar reactions were performed successfully with the corresponding β-keto esters. ... The resulting tertiary alcohol-Lewis acid complexes ...