Visible light-promoted metal-free sp(3)-C-H fluorination.

Visible light-promoted metal-free sp(3)-C-H fluorination.
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DOI:
10.1039/c4cc05650g
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发表时间:
2014-10-11
期刊:
Chemical communications (Cambridge, England)
影响因子:
--
通讯作者:
Chen C
Chen C
中科院分区:
其他
文献类型:
--
作者:
Xia JB;Zhu C;Chen C

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光激发苯乙酮可以催化未活化的C(sp3)-H基团的取代。苯乙酮是一种无色的油,在可见光区域只有微量的吸收,而它的光激发可以通过家用紧凑型荧光灯(CFL)产生的光照射来实现。这种操作简单的方法为氟原子直接掺入简单的有机分子提供了改进的基底范围。CFL-照射也可用于促进无色单芳基酮和烯酮/烯醛的某些经典UV促进的光反应。
Photoexcited acetophenone can catalyze the fluorination of unactivated C(sp3)–H groups. While acetophenone, a colorless oil, only has a trace amount of absorption in the visible light region, its photoexcitation can be achieved by irradiation with light generated by a household compact fluorescent lamp (CFL). This operational simple method provides improved substrate scope for the direct incorporation of a fluorine atom into simple organic molecules. CFL-irradiation can also be used to promote certain classic UV-promoted photoreactions of colorless monoarylketones and enones/enals.
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