2-溴蒽醌以9,10-二蒽酮为母核,通过不同程度的还原可转化为氧化蒽酚、蒽酮和蒽酚结构。其侧位基团可以被羟基、甲氧基、甲基、羟甲基、卤素或糖苷等取代基团所取代。由于母核中含有大量生色团和助色团,蒽醌类化合物呈现出较深的颜色,并具有荧光特性。
制备在25毫升单颈圆底烧瓶中混合邻苯二甲酸酐(1毫摩尔)、取代苯(1.1毫摩尔)和水(5毫升),并加入25%的催化剂。将反应混合物在室温下搅拌适当时间(参见表2,条目3a-j)。通过薄层色谱(TLC)监测反应进程。反应完成后,使用乙酸乙酯(2-10毫升)萃取混合物。合并有机相,并在无水硫酸钠上干燥。然后在减压下蒸发以除去溶剂;粗产物通过硅胶柱层析纯化,最终得到2-溴蒽醌,产率为80%,熔点为205-206°C。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-氨基-3-溴蒽醌 | 2-amino-3-bromoanthraquinone | 6337-00-4 | C14H8BrNO2 | 302.127 |
2-苯甲酰基-4-溴苯甲酸 | 2-benzoyl-4-bromobenzoic acid | 412299-83-3 | C14H9BrO3 | 305.128 |
1-溴蒽醌 | 1-Bromoanthraquinone | 632-83-7 | C14H7BrO2 | 287.112 |
蒽醌 | 9,10-phenanthrenequinone | 84-65-1 | C14H8O2 | 208.216 |
2-(3-溴苯甲酰基)苯甲酸 | 2-(3-bromobenzoyl)benzoic acid | 65565-11-9 | C14H9BrO3 | 305.128 |
2(4-溴苯甲酰基)苯甲酸 | 2-(4-bromobenzoyl)benzoic acid | 2159-40-2 | C14H9BrO3 | 305.128 |
2-氨基蒽醌 | 2-aminoanthraquinone | 117-79-3 | C14H9NO2 | 223.231 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-bromoanthrone | 76656-50-3 | C14H9BrO | 273.129 |
蒽醌 | 9,10-phenanthrenequinone | 84-65-1 | C14H8O2 | 208.216 |
—— | 9,10-dioxo-9,10-dihydroanthracene-2-carbonitrile | 37649-98-2 | C15H7NO2 | 233.226 |
2-乙烯基蒽醌 | 2-Vinyl-anthrachinon | 13388-33-5 | C16H10O2 | 234.254 |
2-羟基蒽醌 | 2-hydroxy-9,10-anthraquinone | 605-32-3 | C14H8O3 | 224.216 |
2-氨基蒽醌 | 2-aminoanthraquinone | 117-79-3 | C14H9NO2 | 223.231 |
—— | 2-ethynylanthraquinone | 78053-65-3 | C16H8O2 | 232.238 |
2-(三氟甲基)蒽-9,10-二酮 | 2-trifluoromethyl-anthraquinone | 362-21-0 | C15H7F3O2 | 276.215 |
2-(4-甲基戊-3-烯基)蒽-9,10-二酮 | 2-(4-methyl-3-pentenyl)-anthraquinone | 71308-16-2 | C20H18O2 | 290.362 |
—— | 2,2'-Dianthrachinonyl | 809-63-2 | C28H14O4 | 414.417 |
2-苯基蒽醌 | 2-Phenyl-anthrachinon | 6485-97-8 | C20H12O2 | 284.314 |
—— | 2,2'-sulfanediyl-di-anthraquinone | 749250-55-3 | C28H14O4S | 446.483 |
—— | 2-(4-aminophenyl)anthracene-9,10-dione | 856357-68-1 | C20H13NO2 | 299.329 |
Halodimethylsulfonium halide 1, which is readily formed in situ from hydrohaloic acid and DMSO, is a good nucleophilic halide. This activated nucleophilic halide rapidly converts aryldiazonium salt prepared in situ by the same hydrohaloic acid and nitrite ion to aryl chlorides, bromides, or iodides in good yield. The combined action of nitrite ion and hydrohaloic acid in DMSO is required for the direct transformation of aromatic amines, which results in the production of aryl halides within 1 h. Substituted compounds with electron-donating or -withdrawing groups or sterically hindered aromatic amines are also smoothly transformed to the corresponding aromatic halides. The only observed by-product is the deaminated arene (usually <7%). The isolated aryldiazonium salts can also be converted to the corresponding aryl halides using 1. The present method offers a facile, one-step procedure for transforming aminoarenes to haloarenes and lacks the environmental pollutants that usually accompany the Sandmeyer reaction using copper halides. Key words: aminoarenes, haloarenes, halodimethylsulfonium halide, halogenation, amination.