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首页> 外文期刊>RSC Advances >Mesoporous graphitic carbon nitride as a heterogeneous catalyst for photoinduced copper(I)-catalyzed azide-alkyne cycloaddition
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Mesoporous graphitic carbon nitride as a heterogeneous catalyst for photoinduced copper(I)-catalyzed azide-alkyne cycloaddition

机译：介孔石墨碳氮化物作为光催化铜（I）催化的叠氮化物-炔烃环加成反应的非均相催化剂

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摘要

A new protocol for the photoinduced copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) was developed. The system utilizes mesoporous graphitic carbon nitride (mpg-N3C4) as a heterogeneous photocatalyst to realize the in situ formation of the required copper(I) catalyst by reducing copper(II) species upon UV or sunlight irradiation. The efficiency of the system in regard to its ability to photoinitiate the CuAAC of a variety of aliphatic and aromatic azides and alkynes in different solvents was examined. Photocalorimetric measurements confirmed that the rate of the reaction depends on the light intensity and continuous or intermittent irradiation. Importantly, because of the heterogeneous nature of the photocatalyst, mpg-C3N4 can easily be separated and reused in further reactions without loss of activity.
机译：提出了一种新的光诱导铜（I）催化的叠氮化物-炔烃环加成（CuAAC）协议。该系统利用介孔石墨碳氮化物（mpg-N3C4）作为非均相光催化剂，通过在UV或阳光照射下还原铜（II）物种，实现所需铜（I）催化剂的原位形成。关于在不同溶剂中光引发各种脂族和芳族叠氮化物和炔烃的CuAAC的能力，研究了该系统的效率。光热法测量证实，反应速率取决于光强度以及连续或间歇照射。重要的是，由于光催化剂的非均质性质，mpg-C3N4可以很容易地分离并在进一步的反应中重复使用，而不会失去活性。

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