Abstract:Folkers und Roth Arch. Pharm. gewaschen. Feine gelbliche Kristalle, Doppel-Schmp. 147-148"; 177-178" (= 3). Ausb.: 56 % d. Th. CI6Hl4N2O, (346.3) Ber. C 55.5 H 4.07 N 8.1 Gef. C 55.5 H 4.04 N 8.0 Mo1.-Masse 328 (Mt-H20) (ms).
2-Methyl-4-(2-nitrophenyl)-5-0~0-5, 7-dihydrofuro[3,4-b]pyridin-3-carbonaure (5)3 mmol3 werden rnit 20 ml50proz. H2S04 20 h bei 100" geriihrt. Die klare, braune Losung wird mit H20 verdiinnt, mit KOH auf pH -3 gebracht und rnit Et20 extrahiert. Der Riickstand der organischen Phase wird rn… Show more
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