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Communication | Regular issue | Vol 32, No. 12, 1991, pp.2319-2322
Published online, 1st January, 1970
DOI: 10.3987/COM-91-5905
Thiyl Radical Induced Cyclization of Dienylamides for Lactam Synthesis

Takeaki Naito,* Yuko Honda, Okiko Miyata, and Ichiya Ninomiya

*Kobe Women's College of Pharmacy, Motoyamakita, Higashinada, Kobe 658-8558, Japan


A series of dienylamides have been found to undergo radical cyclization when irradiated in the presence of diphenyl disulfide and thiophenol. The present method provides an attractive entry to the preparation of lactams from easily available dienylamides.