| 释义 |
phenoxazine, n. Chem.|fiːˈnɒksəziːn|
Also † phenazoxine.
[ad. G. Phenoxazin (R. Nietzki et al. 1889, in Ber. d. Deut. Chem. Ges. XXII. 3034), f. a rearrangement of Phenazoxin (A. Bernthsen 1887, in Ibid. XX. 942): cf. phenothiazine n.]
A violet-red, crystalline, heterocyclic compound, C12H9NO , used in the preparation of the oxazine dyes; also used of a class of compounds whose molecule contains the same skeleton.
1887Jrnl. Chem. Soc. LII. 665 Phenazoxine..is obtained when equimolecular proportions of catechol and orthamidophenol are heated at 260–280° for 40 hours, and after treating the residue with water and aqueous soda, can be extracted from it by ether. 1893[see *oxazine n.]. 1934Jrnl. Chem. Soc. 717 Phenoxazine..which Bernthsen..had obtained by heating o-aminophenol and catechol in a sealed tube. 1957D. E. Pearson in R. C. Elderfield Heterocyclic Compounds VI. xiv. 701 The absorption spectra data of phenoxazine dyes also confirm the general opinion that the phenoxazine system is less aromatic than the phenazine system. 1974Organic Magnetic Resonance VI. 119/2 It would thus seem that coupling of the amine proton to the aromatic protons is stronger in phenoxazine than in phenothiazine. 1986Jrnl. Heterocyclic Chem. XXIII. 1004/1 Compound 6..seems..to arise from the oxidation of the phenoxazine.., which itself is formed on heating o-aminophenol in a protic medium. |