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Paper | Regular issue | Vol 68, No. 11, 2006, pp.2319-2326
Published online, 22nd September, 2006
DOI: 10.3987/COM-06-10853
Synthesis of New 1,2-Diphenyl-4,5-dihydro-3H-3-benzazepines

Chiaki Kaito, Kumiko Sakamoto, Mitsushi Sakamoto, Aiko Yamauchi, and Masaru Kihara*

*Faculty of Pharmaceutical Sciences, The University of Tokushima, 1-78, Sho- machi, Tokushima 770-8505, Japan


1,2-Diphenyl-4,5-dihydro-3H-3-benzazepine derivatives (2a-d) were synthesized via cyclization reaction of N-[2-(2-iodophenyl)ethyl]-α- phenylphenacylamines (5a-c) and (5e) with n-C4H9Li, followed by dehydration of the cyclization products, 1,2-diphenyl-1-hydroxy-3-methyl-2,3,4,5-tetrahydro- 1H-3-benzazepines (4a-d) with trifluoromethanesulfonic acid.