Polymethine dyes — Furo[3,2-f]quinol-7-yl and furo[3,2-f]quinol-9-yl derivatives |
| |
Authors: | P I Abramenko V G Zhiryakov |
| |
Institution: | (1) All-Union State Scientific-Research and Design Institute of the Photographic-Chemical Industry, 125167 Moscow |
| |
Abstract: | New heterocyclic bases — 7- and 9-methylfuro3,2-f]quinolines — were synthesized by condensation of 5-aminobenzofuran double tin hydrochloride salt with paraldehyde in dilute hydrochloric acid and with methyl vinyl ketone in ethanol in the presence of ferric chloride and zinc chloride. Polymethine dyes of various types were obtained from the quaternary salts of the synthesized bases. The introduction of a furan ring in the 5,6 position of quino-2- and quino-4-carbocyanines gives rise to a smaller bathochromic effect than the analogous introduction of a thieno and, particularly, a benzo group.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 391–394, March, 1977. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|