Bulletin of the Chemical Society of Japan p. 1550 - 1555 (1992)
Update date:2022-08-05
Topics:
Yamamoto, Makoto
Furusawa, Atsuko
Iwasa, Seiji
Kohmoto, Shigeo
Yamada, Kazutoshi
A novel intramolecular ketene radical cyclization was described.Treatment of α-bromo-β-alkoxycarbonyl- and α-bromo-β-oxoketene dithioacetals with tributyltin hydride and AIBN gave lactones and cyclic ketones bearing bis(methylthio)methylene substituent at α-position in moderate yields.Tandem radical cyclization of ketene radical synthons were also carried out.
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