Synthesis of 2,3,8,9-Dibenzo-5,6-(substituted)benzo-1,4-dithio-7-oxacyclonona-2,5,8-trienes and some electrophilic substitution reactions
作者:Man Nyoung Kim、Kyongtae Kim
DOI:10.1002/jhet.5570350143
日期:1998.1
in tetrahydrofuran at reflux gave the title compounds 5 in excellent yields. For the reactivities of the compounds 5, the selected compounds 5 were subjected under the conditions of electrophilic substitution reactions. Bromination of 5,6-3-(2-butyl)benzo}-2,3,8,9-dibenzo-1,4-dithio-7-oxacyclonona-2,5,8-triene (5f) in acetic acid at 60° afforded two bromo compounds 9 (22%) and 10 (69%), which were
在四氢呋喃中用氢化钠在回流下处理5-(2-羟基芳基)噻吩基高氯酸盐1,以优异的收率得到标题化合物5。为了使化合物5反应,将选择的化合物5在亲电取代反应的条件下进行。5,6- 3-(2-丁基)苯并} -2,3,8,9-二苯并-1,4-二硫基-7-氧杂环环酮-2,5,8-三烯(5f)的溴化反应在60℃得到两个溴化合物9(22%)和10(69%),这是由氧化米氯过苯甲酸,得到tetraoxides 11(95%)和12(97%)。在氯化铝存在下,在二硫化碳中,0°下用乙酰氯处理5f,得到乙酰化的化合物13(58%)。在50°下用硝酸在乙酸中将5f硝化,得到硝基化合物17(15%)以及尚未建立区域化学反应的1,4-二氧化物7e(22%)和5-氧化物18(3%)。另一方面,5,6-(3-甲基苯并)-2,3,8,9-二苯并-1,4-二硫-7-氧杂环酮-2,5,8-三烯(5a)与乙酰氯在室温下反应。在