v. Kostanecki, Chemische Berichte, 1892, vol. 25, p. 1644
作者:v. Kostanecki
DOI:——
日期:——
Synthesis of Heterocyclic Compounds by the Skraup Reaction of Amino-9H-xanthen-9-ones
作者:Hidetoshi Fujiwara、Ichizo Okabayashi
DOI:10.3987/com-93-6575
日期:——
The Skraup reaction of amino-9H-xanthen-9-ones was conducted in the presence of glycerol, fuming sulfuric acid, nitrobenzene, iron (II) sulfate and boric acid. 1-Amino-9H-xanthen-9-one gave 12H[1]benzopyrano[2,3-h]quinolin-12-one. 2- And 3-amino-9H-xanthen-9-ones gave angular-type products, 12H-[1]-benzopyrano[3,2-f]quinolin-12-one and 7H-[1]benzo-pyrano[3,2-g]quinolin-7-one respectively, without linear-type products. 4-Amino-9H-xanthen-9-one gave 7H-[1]benzopyrano[3,2-h]quinolin-7-one.
Fujiwara Hidetoshi, Okabayashi Ichizo, Heterocycles, 38 (1994) N 3, S 541-550
作者:Fujiwara Hidetoshi, Okabayashi Ichizo
DOI:——
日期:——
YOKOE ICHIRO; HIGUCHI KYOKO; SHIRATAKI YOSHIAKI; KOMATSU MANKI, J. CHEM. SOC. CHEM. COMMUN., 1981, NO 10, 442-443