Alternative pathways to α,β-unsaturated ketones via direct oxidative coupling transformation using Sr-doped LaCoO3 perovskite catalyst

A strontium-doped lanthanum cobaltite perovskite material was prepared, and used as a recyclable and effective heterogeneous catalyst for the direct oxidative coupling of alkenes with aromatic aldehydes to produce α,β-unsaturated ketones. The reaction afforded high yields in the presence of di- tert...

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Published inRoyal Society open science Vol. 6; no. 11; p. 191313
Main Authors Trinh, Khang H, Doan, Son H, Huynh, Tien V, Tran, Phuong H, Pham, Diep N, Le, Minh-Vien, Nguyen, Tung T, Phan, Nam T S
Format Journal Article
LanguageEnglish
Published The Royal Society 01.11.2019
Subjects
alkenes
catalysis
Chemistry
lacoo3
oxidative coupling
perovskite
αβ-unsaturated ketones
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Summary:A strontium-doped lanthanum cobaltite perovskite material was prepared, and used as a recyclable and effective heterogeneous catalyst for the direct oxidative coupling of alkenes with aromatic aldehydes to produce α,β-unsaturated ketones. The reaction afforded high yields in the presence of di- tert -butylperoxide as oxidant. Single oxides or salts of strontium, lanthanum and cobalt, and the undoped perovskite offered a lower catalytic activity than the strontium-doped perovskite. Benzaldehyde could be replaced by benzyl alcohol, dibenzyl ether, 2-oxo-2-phenylacetaldehyde, 2-bromoacetophenone or (dimethoxymethyl) benzene in the oxidative coupling reaction with alkenes. To our best knowledge, reactions between these starting materials with alkenes are new and unknown in the literature.
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This article has been edited by the Royal Society of Chemistry, including the commissioning, peer review process and editorial aspects up to the point of acceptance.
Electronic supplementary material is available online at https://doi.org/10.6084/m9.figshare.c.4742099.
ISSN:2054-5703
2054-5703
DOI:10.1098/rsos.191313