484-17-3Relevant articles and documents
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Fieser,Jacobsen,Price
, p. 2163,2165 (1936)
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Itoh et al.
, p. 1059,1060-1062 (1979)
Preparation method of 9-hydroxyphenanthrene
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, (2021/08/07)
The invention discloses a preparation method of 9-hydroxyphenanthrene, the preparation method comprises the following steps: taking a phenanthrene solution as a raw material, carrying out bromination, methoxylation and demethylation reaction to obtain the 9-hydroxyphenanthrene. The preparation method has the advantages of low preparation cost, high preparation efficiency, environmental friendliness, greatly improved product yield and high quality of the prepared product, is suitable for industrial production, and can be used for large-scale industrial preparation of 9-hydroxyphenanthrene and derivatives thereof.
β-Diketone boron difluoride dye-functionalized conjugated microporous polymers for efficient aerobic oxidative photocatalysis
Dong, Kaixun,Gong, Weitao,Hassan, Mehdi,Liu, Lu,Ning, Guiling
, p. 3905 - 3913 (2021/06/18)
Incorporation of organic chromophores into conjugated micro/mesoporous polymers (CMPs) provides a promising avenue for developing recyclable heterogeneous photocatalysts by overcoming tedious separation and low reusability of homogeneous organic dye-based photocatalysts. However, the design principle and the underlying structure-property relationship for fabricating and selecting various organic dye-embedded CMPs for efficient photocatalysis have not been well-constructed so far. In this study, we described the rational fabrication of two new CMPsviathe one-step Sonogashira coupling using β-diketone boron difluoride dye as the key linker and commonly used building blocks (triphenylamine/triphenylbenzene) as the cores. The resulting boron-dye containing CMPs were efficiently employed as the metal-free photocatalysts in two typical aerobic oxidative organic transformations including coupling of benzylamine and oxidation of aryl boronic acids to corresponding aryl phenols, which have never been explored with other boron-dye-embedded CMPs. They exhibited superior photocatalytic performance compared to their boron-free counterparts due to their wide visible-light absorption, narrow optical bandgaps, and extended π-conjugation due to boron-complexation. The present study establishes β-diketone boron difluoride dyes as efficient building blocks for fabricating new CMP-based photocatalysts.