四氯苯醌的合成

SYNTHESIS OF TETRACHLORO-1.4-BENZOQUINONE (CHLORANIL)

以对苯二酚为原料，二氯苯－ 醋酸－ 水为溶剂，温度８０ ℃，氯化得到四氯苯醌，熔点２９０ ．０ ℃（ 分解） ，摩尔产率９３．５％ ，与文献报导的醋酸－ 水做溶剂相比较，产品纯度高，反应过程重复性好。溶剂可重复使用至少１２次。

Using dichlorobenzene- acetic acid-water mixed solvent instead of acetic acid-water mixture, the synthesis of chloranil from hydroquinone under 80 ℃ was proposed. The yield of pure chloranil was over 93.5%(mol). The result shows good repeatability of the proposed procedure. The mixed solvent can be reproduced and applied for several times.