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Communication | Regular issue | Vol 23, No. 8, 1985, pp.1943-1946
Published online, 1st January, 1970
DOI: 10.3987/R-1985-08-1943
Photo-induced Formation of meta-Bridged Aromatic Lactams Having Eleven Membered Ring

Osamu Hoshino,* Hiromichi Ogasawara, Atsuo Takahashi, and Bunsuke Umezawa

*Faculty of Pharmaceutical Sciences, Science University of Tokyo, 2641 Yamazaki, Noda, Chiba 278-8510, Japan


Irradiation of N-[2-(2- or 4-hydroxyphenyl)ethyl]-3-(2-bromophenyl)propionamides (10) under basic conditions gave eleven membered ring lactams (12a,b,e and 13), which were formed by aryl-aryl coupling at the ortho and para positions to a hydroxyl group in 10, in moderate yields.