Helvetica Chimica Acta p. 629 - 635 (1995)
Update date:2022-08-05
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Reactions of 3-silylated β-lactams (1) with α,β-unsaturated ketones give the propylidene-β-lactams 3 and the cycloalkenylidene derivatives 5. Structure and configuration are elucidated by spectroscopic methods, and the reactivity is discussed. While compounds 5 do not react with dienophiles, the (Z)-isomers of 3 are the favored substrates for Diels-Alder reactions yielding the spiro compounds 6 and 7.
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(1995)