Green Synthesis of Halogenated Thiophenes, Selenophenes and Benzo[b]selenophenes Using Sodium Halides as a Source of Electrophilic Halogens.
Green Synthesis of Halogenated Thiophenes, Selenophenes and Benzo[b]selenophenes Using Sodium Halides as a Source of Electrophilic Halogens.
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DOI:
10.1016/j.tetlet.2017.01.007
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发表时间:
2017-02-15
影响因子:
1.8
通讯作者:
Olaitan AD
中科院分区:
文献类型:
--
作者:
Kesharwani T;Giraudy KA;Morgan JL;Kornman C;Olaitan AD
Herein, we report the first synthesis of chlorinated benzo[b]selenophenes via environmentally friendly electrophilic chlorocyclization reaction using “table salt” as a source of “electrophilic chlorine” and ethanol as a solvent. In addition, the synthesis of diverse halogenated heterocycles, including 3-chloro, 3-bromo and 3-iodo thiophenes, selenophenes, and benzo[b]selenophenes was successfully accomplished under the same environmentally benign reaction conditions. This methodology has several advantages over other previously reported reactions as it employs simple starting compounds, an environmentally friendly solvent, ethanol, and non-toxic inorganic reagents under mild reaction conditions, resulting in the high product yields.
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