Cellulosic CuI Nanoparticles as a Heterogeneous, Recyclable Catalyst for the Borylation of α,β-Unsaturated Acceptors in Aqueous Media

Copper Foam as Active Catalysts for the Borylation of α, β-Unsaturated Compounds

“…To investigate the reaction mechanism of copper foam in catalyzing the boron-addition reaction of α, β -unsaturated acceptors, we performed deuteration experiments using 4-methoxychalcone as raw material using the one-pot method, as shown in Table 3 . The results are in general agreement with the previous experiments in Zhou’s report [ 46 ]. Both MeOH and H 2 O were used as solvent and proton sources during the catalytic cycle reaction.…”

“…It has been reported that proton-type solvents [ 37 , 46 ], such as methanol, can better promote the boron addition reaction of α, β -unsaturated receptors. Therefore, we first chose the proton solvent as the solvent for the reaction.…”

“…Numerous reports [ 43 , 44 , 45 , 46 ] have shown that the oxidation reaction of organoboron compounds is an equivalent transformation. To verify the utility of the copper foam catalytic system, we employed a “one-pot” strategy to extend the substrate by direct conversion of α, β -unsaturated acceptors to β -hydroxy compounds under optimal reaction conditions.…”

“…In previous work, we immobilized copper salts or copper nanoparticles on Zeolite [ 43 ], chitosan microspheres [ 44 ], chitosan films [ 45 ], and cellulose [ 46 ] and they all had high catalytic activity in the boron addition reaction. As a continuation of the above work, we believe that copper foam can also be used directly as catalysts for boronization processes.…”

Research Progress of Chitosan Supported Copper Catalyst in Organic Reactions

“…2016 年, 朱磊课题组 [53] 制备了壳聚糖负载 Cu(OH) 2 催化剂(CS@Cu(OH) 2018 年, 朱磊课题组 [54] 将壳聚糖(CS)和聚乙烯醇 (PVA)经戊二醛交联, 制备出复合膜后吸附 Cu(II), 再经 [55] 又利用纤维素负载 CuI 纳米粒子制备出催 化剂, 与壳聚糖载体相比络合能力较弱, 添加手性膦配 体的情况下, 在水相中实现了 α,β-不饱和受体的不对称 硼加成反应.…”