Tetrahedron Letters p. 613 - 616 (1987)
Update date:2022-08-04
Topics:
Brandstadter, Stephan M.
Ojima, Iwao
Hirai, Kenji
The reactions of vinylketene silyl acetals (VKSAs) with imine complexes of TiCl4 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 formation of 5,6-dihydro-2-pyridones in this formal cyclocondensation reaction.
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