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中文摘要：
在催化量氢氧化铯存在下, O,O-二烷基膦酸酯与二芳基二硒醚在DMSO中、室温、空气氛中反应, 高收率得到磷酸硒酯. 反应机理为氢氧化铯与O,O-二烷基膦酸酯反应生成的（RO）2P-（O）Cs＋, （RO）2P-（O）Cs＋亲核进攻ArSeSeAr生成磷酸硒酯和ArSe-Cs＋, 后者在水存在下, 被氧化得到ArSeSeAr和氢氧化铯. 这方法为合成磷酸硒酯提供了一条简便有效的路径.
英文摘要：
In the presence of cesium hydroxide, using dimethyl sulfoxide （DMSO） as solvent, dialkyl phosphites reacted with diaryldiselenides at room temperature to afford the corresponding Se-aryl phosphoroselenoates in high yields. The reaction mechanism is that dialkyl phosphites reacted with cesium hydroxide to give （RO）2P-（O）Cs＋, which underwent nucleophilic attack on ArSeSeAr to give product Se-aryl phosphoroselenoates and ArSe-Cs＋, the latter was oxidized in the presence of water to form diaryldiselenides and catalyst cesium hydroxide. The method could provide a new and expedient way for the Se-aryl phosphoroselenoates.
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