cinnoline Chem.
(ˈsɪnəʊlɪn)
[ad. G. cinnolin (V. von Richter 1883, in Ber. d. Deut. Chem. Ges. XVI. 677); cf. chinoline, quinoline.]
A poisonous crystalline base, C8H6N2.
| 1883 Jrnl. Chem. Soc. XLIV. 1105 Cinnoline-derivatives. By V. v. Richter. Ibid., This base may be looked upon as quinoline in which one CH-group has been replaced by N, and the author therefore proposes the name cinnoline for it. 1929 Encycl. Brit. V. 386/2 The fusion of pyridazine with benzene may result in either cinnoline or phthalazine. 1946 Jrnl. Amer. Chem. Soc. LXVIII. 1310 (title) 4-Substituted Cinnoline Derivatives. Ibid., Work on the synthesis of cinnoline derivatives is limited, but has shown that the most practical method of obtaining such compounds..involves the spontaneous cyclization of diazotized o-aminophenyl⁓ethylenes. Ibid., Cinnoline-4-carboxylic acid was esterified readily. 1965 Austral. Jrnl. Chem. XVIII. 713 The non-uniform effect of the heteroatom on ortho coupling constants in the aromatic ring noted previously is again observed in quinazoline and cinnoline. |