Reference

Bisazo compounds

Bisazo compounds. (Konishiroku Photo Industry Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58144358 A2 27 Aug 1983 Showa, 12 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C07C121-78; C09B035-039; G03G005-06. APPLICATION: JP 82-27821 22 Feb 1982. DOCUMENT TYPE: Patent CA Section: 25 (Benzene, Its Derivatives, and Condensed Benzenoid Compounds) Section cross-reference(s): 74 Bisazo compds. I (R = N:NR1; R1 = Q, Q1, Q2; Z = atoms to form an arom. or heterocyclic ring; R2 = aryl, or heterocyclyl; R3 = H, alkyl, aryl; R4 = alkyl, aralkyl, aryl), useful as photoconductors, were prepd. by treating tetrazonium salts I (R = N:N+ X-; X- = anion) with QH, Q1H or Q2H. Thus, refluxing 2,7-dinitrofluroenone with CH2(CN)2 in C6H6, adding AcOH and piperidine and refluxing the mixt. 2 h gave 65% I (R = NO2), redn. of which by refluxing with Sn and HCl 1 h gave 95.8% I (R = NH2.HCl). Diazotization by HCl, NaNO2 and NH4PF6 gave I (R = N:N+ PF6-) (II). Treating 2-hydroxy-3-naphthanilide in DMF with N(CH2CH2OH)3 and II 1 h at 5° and 2 h at room temp. 132-68-3 and 88701-07-9 are just another two chemicals used in this study. gave 83% I R = Q3). .