Photosensitizer-free visible light-mediated gold-catalysed cis-difunctionalization of silyl-substituted alkynes,Chemical Science

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Photosensitizer-free visible light-mediated gold-catalysed cis-difunctionalization of silyl-substituted alkynes
Chemical Science ( IF 7.6 ) Pub Date : 2017-09-04 00:00:00 , DOI: 10.1039/c7sc02294h
Jie-Ren Deng _{1,

2,

3,

4,

5} , Wing-Cheung Chan _{1,

5,

6,

7,

8} , Nathanael Chun-Him Lai _{1,

2,

3,

4,

5} , Bin Yang _{1,

2,

3,

4,

5} , Chui-Shan Tsang _{1,

5,

6,

7,

8} , Ben Chi-Bun Ko _{1,

5,

6,

7,

8} , Sharon Lai-Fung Chan _{1,

2,

3,

4,

5} , Man-Kin Wong _{1,

2,

3,

4,

5}

Affiliation

A new photosensitizer-free visible light-mediated gold-catalysed cis-difunctionalization reaction is developed. The reaction was chemoselective towards silyl-substituted alkynes with excellent regioselectivity and good functional group compatibility, giving a series of silyl-substituted quinolizinium derivatives as products. The newly synthesized fluorescent quinolizinium compounds, named JR-Fluor-1, possessed tunable emission properties and large Stokes shifts. With unique photophysical properties, the fluorophores have been applied in photooxidative amidations as efficient photocatalysts and cellular imaging with switchable subcellular localization properties.

中文翻译：

不含光敏剂的可见光介导的金催化的甲硅烷基取代的炔烃的顺式-双官能化

开发了一种新的无光敏剂的可见光介导的金催化的顺式-双官能化反应。该反应对具有优异的区域选择性和良好的官能团相容性的甲硅烷基取代的炔烃具有化学选择性，得到了一系列的甲硅烷基取代的喹啉鎓衍生物。新合成的荧光喹啉鎓化合物，称为JR-Fluor-1，具有可调的发射特性和较大的斯托克斯位移。具有独特的光物理特性，该荧光团已作为有效的光催化剂和具有可切换亚细胞定位特性的细胞成像而应用于光氧化酰胺化中。

更新日期：2017-09-21

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