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
Faculty of Chemical Engineering, HCMC University of Technology, VNU-HCM, 268 Ly Thuong Kiet, District 10, Ho Chi Minh City, Viet Nam.
R Soc Open Sci. 2019 Nov 27;6(11):191313. doi: 10.1098/rsos.191313. eCollection 2019 Nov.
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--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.
制备了一种锶掺杂的镧钴矿钙钛矿材料，并将其用作可循环使用的有效多相催化剂，用于烯烃与芳香醛直接氧化偶联制备α,β-不饱和酮。在二叔丁基过氧化物作为氧化剂的情况下，该反应能获得高产率。锶、镧和钴的单一氧化物或盐以及未掺杂的钙钛矿的催化活性低于锶掺杂的钙钛矿。在与烯烃的氧化偶联反应中，苯甲醛可以被苯甲醇、二苄基醚、2-氧代-2-苯基乙醛、2-溴苯乙酮或（二甲氧基甲基）苯取代。据我们所知，这些起始原料与烯烃之间的反应在文献中是新的且未知的。
