The author of 《Immobilization of manganese dioxide nanoparticles on modified poly 2,4-dichlorostyrene microspheres: a highly efficient and recyclable catalyst for borrowing hydrogen reactions》 were Qiu, Ye; Zhang, Yilin; Jin, Lu; Pan, Le; Du, Guangming; Ye, Dongdong; Wang, Dawei. And the article was published in Organic Chemistry Frontiers in 2019. SDS of cas: 873-75-6 The author mentioned the following in the article:
Manganese dioxide nanoparticles have been fabricated using a facile approach and immobilized onto the surface of modified poly 2,4-dichlorostyrene microspheres. The resulting multifunctional hybrid materials were characterized by SEM, transmission electron microscopy, energy dispersive X-ray spectroscopy, X-ray power diffraction and X-ray photoelectron spectrometry. This cheap heterogeneous manganese catalyst revealed excellent reactivity and stability for the direct alkylation of primary alcs. with ketones via a hydrogen borrowing pathway. In addition, this catalytic system could be readily recycled more than five times with high reactivity retained, which provided a practical atom-economical approach for C-C bond formation and 1-benzyl-2-aryl-1H-benzo[d]imidazole synthesis. Mechanism investigations were conducted to better understand this catalyst system and these transformations. In the experiment, the researchers used (4-Bromophenyl)methanol(cas: 873-75-6SDS of cas: 873-75-6)
(4-Bromophenyl)methanol(cas: 873-75-6) undergoes three-component reaction with acetylferrocene and arylboronic acid to give ferrocenyl ketones containing biaryls.SDS of cas: 873-75-6 It undergoes oxidation reaction in the presence of polyvinylpolypyrrolidone-supported hydrogen peroxide, silica sulfuric acid and ammonium bromide to yield 4-bromobenzaldehyde.
Referemce:
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Alcohols – Chemistry LibreTexts