Organic and biomolecular chemistry p. 257 - 264 (2004)
Update date:2022-08-04
Topics: Lewis acid Cyclization Heteroatom-substituted Enynes
Yamazaki, Shoko
Yamada, Kuriko
Yamamoto, Kagetoshi
Lewis acid-promoted cyclizations of heteroatom-substituted enynes have been examined. The reaction of enynes and bearing silicon substituents on an alkyne afforded the halogenated five-membered gamma-lactones and gamma-lactams as the main products. The reaction of substrates and having 2-phosphonoacrylate instead of malonate also gave halogenated five-membered cyclic compounds and as the major products. The cyclized products are highly substituted and potentially useful for further synthetic transformations.
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