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3-(Nitrobenzylidene)-2,4(3H,5H)-furandiones in the Hantzsch Pyridine Synthesis. Part 1. A New Approach to Furo[3,4-b]pyridines.

✍ Scribed by K. Goerlitzer; U. Bartke

Publisher
John Wiley and Sons
Year
2003
Weight
137 KB
Volume
34
Category
Article
ISSN
0931-7597

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m. p.=248-250GC (dec.; from methanol); [.ID= -129.' (DMSO, c = 1.00); 'H-NMR (D6-DMSO); t=4.13 and 4.18 (s, I-H+l'-H and s, 2 2-benzyl-H, or vice versa); MS: 520 (M+)]. The amino ketone ( 8 ) is probably first formed, being later aromatized by dimerization and air oxidation to yield ( 9 ) . The firs