科研之友
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摘要
A novel protocol has been reported for synthesis of pyrazoles by visible light irradiation in the presence of eosin Y, an organophotocatalyst under atmospheric oxygen. We have successfully carried out a visible light induced Michael addition followed by intramolecular cyclization reactions for the formation of heterocyclic ring. The present method incorporates advantages such as being eco-friendly, involving metal free condition, reporting excellent yields, using minimum reaction time, making use of an easily available catalyst, and eliminating the use of column chromatography.
- 出版日期2015-10-21
