Tetrahedron letters

Reactions of ketene silyl acetals with imine-complexes of titanium tetrachloride. New and convenient routes to 5, 6-dihydro-2-pyridones and 5-amino-2-alkenoates

SM Brandstadter, I Ojima, K Herai

Index: Brandstadter, Stephan M.; Ojima, Iwao; Hirai, Kenji Tetrahedron Letters, 1987 , vol. 28, # 6 p. 613 - 616

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Citation Number: 35

Abstract

Abstract The reactions of vinylketene silyl acetals (VKSAs) with imine complexes of TiCl 4 give the corresponding 5, 6-dihydro-2-pyridones and/or 5-amino-2-alkenoates in good to excellent yields. It is suggested that an addition-cyclization mechanism is operative for the ...