Chemistry Letters

Lewis acid-induced stereoselective ene-cyclization of. OMEGA.-unsaturated trifluoromethylketones.

C Aubert, JP Bégué, D Bonnet-Delpon

Index: Aubert, Corinne; Begue, Jean-Pierre; Bonnet-Delpon, Daniele Chemistry Letters, 1989 , p. 1835 - 1838

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Abstract

1&8 GwmsuyLamm,1989 a mixture of 69 and the isomeric A4-10—octa1in; the axial position of chlorotitanium alkoxide can favor an intramolecular transfer of chloride and explains the stereochemistry of 14. HO CF3 @ In this way, functionalized mono and bicyclic six—membered ring compounds bearing a CF3 group are available. An extension of this reaction to obtain other polycyclic compounds is now under investigation. We are grateful to Professor Takeshi Nakai for good criticisms. ...