The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Ultraviolet spectra of N-heterocyclic systems. II. The spectra of 5(6,7, or 8)-hydroxyisoquinolines and related compounds》. Authors are Nakanishi, Koji; Ohashi, Mamoru; Kumasaki, Shoichiro; Koike, Hisashi.The article about the compound:Isoquinolin-6-olcas:7651-82-3,SMILESS:OC1=CC2=C(C=NC=C2)C=C1).Synthetic Route of C9H7NO. Through the article, more information about this compound (cas:7651-82-3) is conveyed.
cf. CA 54, 17412d; 55, 15113f. The mold pigment, monascorubrin, yields a degradation product monascaminone, apparently an isoquinoline derivative hydroxylated at the 5-, 6-, 7-, or 8-position. These 4-isoquinolinols, the 6- and 7-OMe, and methiodides of the 5-, 7-, and 8-OH compounds (I, II, and III, resp.) were synthesized and the ultraviolet spectra determined in neutral(excepting I, II, and III), 0.1N HCl, and 0.1N NaOH- MeOH solutions For preparation of I-III, 100 mg. of the resp. OH compound was refluxed 1 hr. in 10 ml. 1:1 Me2CO-C6H6 with 3 ml. methyl iodide. The recrystallized (EtOH) products m. 235-7, 218-20, and 217-19°, resp. The ultraviolet spectra of I, II, and III were given. Also tabulated were Δλmax between ionic species of 7- and 8-hydroxyisoquinolines, and classification of ultraviolet spectra of hydroxyand hydroxyisoquinolines, all in MeOH. W. A. Peabody
In some applications, this compound(7651-82-3)Synthetic Route of C9H7NO is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.
Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method