%0 Journal Article
%T Synthesis of 2,3-Dimethoxy-7-methyl-7,12-dihydro-6H-[1]-benzofuro-[2,3-c]-[1]-benzazepin-6,12-dione
%A Yvette A. Jackson
%A Karla-Sue C. Marriott
%J Molecules
%D 2002
%I MDPI AG
%R 10.3390/70300353
%X Treatment of 5,6-dimethoxy-2-(methylphenylcarbamoyl)-benzofuran-3-carboxylic acid with PPA yielded 2,3-dimethoxy-7-methyl-7,12-dihydro-6H-[1]-benzofuro-[2,3-c]-[1]-benzazepin-6,12-dione. The analogous 2-[(5,6-dimethoxybenzofuran-2-carbonyl)methylamino]benzoic acid was resistant to cyclization, whereas 2-[(6-methoxybenzofuran-2-carbonyl)-amino]benzoic acid underwent cyclization to the corresponding 3,1-benzoxazin-4-one.
%K PPA
%K cyclization
%K benzoxazinone
%K benzofuro-[2
%K 3-c]-[1]-benzazepin-6
%K 12-dione
%U http://www.mdpi.com/1420-3049/7/3/353