Synthesis of 10-cyano-9-(β, β-substituted)ethenylanthracenes and their application on polyester fibres as disperse dyes

Abstract

<span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:calibri;mso-bidi-theme-font:minor-latin;="" mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">10-Chloroanthracene-9-aldehyde (<b>I</b>) obtained from anthrone was condensed with compounds containing active methyl or methylene group in refluxing acetic acid in the presence of fused sodium acetate to give a variety of 10-chloro-9-(<span style="mso-bidi-font-weight: bold">β,<span style="mso-bidi-font-weight:bold"> β-substituted)ethenylanthracenes (<b>III</b>). The chloroanthracenes thus obtained were converted to 10-cyano-9-(<span style="mso-bidi-font-weight:bold">β,<span style="mso-bidi-font-weight:bold">β<b>-</b>substituted)ethenylanthracenes (<b>IV</b>) by the treatment with cuprous cyanide in refluxing DMF. The fluorescent properties of <b>IV</b> were studied. When applied on polyester fibres these. compounds gave bright yellow shades with greenish fluorescence having moderate to good pick-up, moderate light fastness and good to very good sublimation fastness.</span></span></span></span></span>