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链接剂辅助的 CdS-TiO 纳米杂化体作为可重复使用的可见光光催化剂，用于芳基硼酸的氧化羟基化反应。

Linker-Assisted CdS-TiO Nanohybrids as Reusable Visible Light Photocatalysts for the Oxidative Hydroxylation of Arylboronic Acids.

机构信息

INFIQC-CONICET-UNC, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina.

CENSALUD-UES, Departamento de Química, Física y Matemática, Facultad de Química y Farmacia, Universidad de El Salvador, Final Av. Mártires y Héroes del 30 de Julio, San Salvador 1101, El Salvador.

出版信息

J Org Chem. 2023 May 19;88(10):6489-6497. doi: 10.1021/acs.joc.2c02964. Epub 2023 Mar 17.

DOI:10.1021/acs.joc.2c02964
PMID:36930860
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10204062/
Abstract

A variety of phenols have been obtained in aqueous media with moderate to excellent chemical yields (≤100%) by using arylboronic acids and esters as substrates, a robust CdS-TiO nanohybrid as a heterogeneous photocatalyst, visible light irradiation (467 nm), and an O-saturated atmosphere. The nanohybrid was prepared through a linker-assisted methodology that uses mercapto alkanoic acids as the organic linkers. The nanohybrid showed improved photocatalytic activity in the hydroxylation of substituted arylboronic acids and phenyl boronic esters compared with that of pristine CdS quantum dots. The nanohybrid can be reused in up to five photocatalytic cycles with ∼90% of its outstanding activity preserved.

摘要

在水相介质中，使用芳基硼酸和酯作为底物，以一种坚固的 CdS-TiO 纳米杂化物为多相光催化剂，可见光照射（467nm）和 O2 饱和气氛，获得了多种酚类化合物，其化学产率（≤100%）适中到优异。纳米杂化物是通过一种使用巯基链烷酸作为有机连接体的连接体辅助方法制备的。与原始 CdS 量子点相比，纳米杂化物在取代的芳基硼酸和苯硼酸酯的羟基化反应中表现出更高的光催化活性。该纳米杂化物可在多达五个光催化循环中重复使用，其出色的活性保留了约 90%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5520/10204062/178e93d9380b/jo2c02964_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5520/10204062/b48630b98275/jo2c02964_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5520/10204062/8595ae8b50f1/jo2c02964_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5520/10204062/a4b847fd46bc/jo2c02964_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5520/10204062/f9e869b1988d/jo2c02964_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5520/10204062/178e93d9380b/jo2c02964_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5520/10204062/b48630b98275/jo2c02964_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5520/10204062/8595ae8b50f1/jo2c02964_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5520/10204062/a4b847fd46bc/jo2c02964_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5520/10204062/f9e869b1988d/jo2c02964_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5520/10204062/178e93d9380b/jo2c02964_0005.jpg

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本文引用的文献

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UPS and UV spectroscopies combined to position the energy levels of TiO anatase and rutile nanopowders.
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Visible-Light Photocatalytic Synthesis of Amines from Imines via Transfer Hydrogenation Using Quantum Dots as Catalysts.以量子点为催化剂通过转移氢化从亚胺可见光光催化合成胺
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Pd-Catalyzed Hydroxylation of Aryl Boronic Acids Using In Situ Generated Hydrogen Peroxide.钯催化原位生成过氧化氢对芳基硼酸的羟基化反应
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