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无氧条件下铜、镍和铁催化的芳基硫酚自偶联生成二芳基二硫醚
Synthesis of diaryldisulfides via copper,nickel and iron-catalyzed homocoupling of aryl or benzyl thiols free of oxidants
【摘要】 苯硫酚或苯甲硫醇在CuI/Phen催化下,以Na2CO3为碱,乙二醇二甲醚为溶剂,在氮气保护下,回流搅拌可得二芳基二硫醚,收率为79%~99%;在Ni(PPh3)2Cl2催化下,以K2CO3为碱,得到的二芳基二硫醚的收率为77%~86%;在FeCl3/L-Proline催化下,以K2CO3为碱,甲醇为溶剂时,在氮气保护下,回流搅拌得到二芳基二硫醚,收率为86%~97%.为合成二芳基二硫醚提供了3种有效方法.
【Abstract】 Various symmetric diaryldisulfides were synthesized from commercially available aryl thiols catalyzed by CuI/Phen with Na2CO3 as a base in dimethoxyethane(DME),and stirred and refluxed under the nitrogen atmosphere for high yields of 79%to 99%.In the presence of Ni(PPh3)2Cl2 with K2CO3 as a base under the nitrogen atmosphere,diaryldisulfides can be synthesized from aryl thiols in DME,whose yields are at the range of 77% to86%.Diaryldisulfides can also be synthesized from aryl thiols catalyzed by FeCl3/L-Proline with K2CO3 as a base in MeOH,and its yields are at the range of 86%to 97%.In this paper,we present three methods for the preparation of diaryldisulfides.
- 【文献出处】 浙江大学学报(理学版) ,Journal of Zhejiang University(Science Edition) , 编辑部邮箱 ,2015年04期
- 【分类号】O625.72
- 【被引频次】1
- 【下载频次】119