CuFe 2 O 4超顺磁性纳米粒子被用作可回收的多相催化剂,用于通过交叉脱氢偶联反应直接合成包含酚酯和苯并噻唑部分的化学结构。在纳米催化剂的存在下,几种底物对转化具有反应性,包括苯甲醛,苯甲醇,二苄基醚,2-氧代-2-苯基乙醛和2-碘-1-苯基乙酮。该纳米催化剂显示出比许多均相和非均相催化剂更高的催化效率。纳米CuFe 2 O 4通过使用磁铁可以很容易地将其分离,并且可以多次重复利用而不会显着降低催化性能。据我们所知,这些反应以前没有在文献中报道过。
Copper-Catalyzed Oxidative C–O Bond Formation of 2-Acyl Phenols and 1,3-Dicarbonyl Compounds with Ethers: Direct Access to Phenol Esters and Enol Esters
作者:Jihye Park、Sang Hoon Han、Satyasheel Sharma、Sangil Han、Youngmi Shin、Neeraj Kumar Mishra、Jong Hwan Kwak、Cheong Hoon Lee、Jeongmi Lee、In Su Kim
DOI:10.1021/jo500576x
日期:2014.5.16
A copper-catalyzed oxidative coupling of 2-carbonyl-substituted phenols and 1,3-dicarbonyl compounds with a wide range of dibenzyl or dialkyl ethers is described. This protocol provides an efficient preparation of phenol esters and enol esters in good yields with high chemoselectivity. This method represents an alternative protocol for classical esterification reactions.
Superparamagnetic nanoparticles as a recyclable catalyst: a new access to phenol esters <i>via</i> cross dehydrogenative coupling reactions
作者:Chung K. Nguyen、Hoang H. Vu、Ha V. Dang、Ngon N. Nguyen、Nhan T. H. Le、Nam T. S. Phan
DOI:10.1039/c7ra11706j
日期:——
CuFe2O4 superparamagnetic nanoparticles were utilized as a recyclable heterogeneous catalyst for the direct synthesis of chemical structures containing both phenol ester and benzothiazole moieties via cross dehydrogenative coupling reactions. Several substrates were reactive towards the transformation in the presence of the nano catalyst, including benzaldehyde, benzyl alcohol, dibenzyl ether, 2-oxo-
CuFe 2 O 4超顺磁性纳米粒子被用作可回收的多相催化剂,用于通过交叉脱氢偶联反应直接合成包含酚酯和苯并噻唑部分的化学结构。在纳米催化剂的存在下,几种底物对转化具有反应性,包括苯甲醛,苯甲醇,二苄基醚,2-氧代-2-苯基乙醛和2-碘-1-苯基乙酮。该纳米催化剂显示出比许多均相和非均相催化剂更高的催化效率。纳米CuFe 2 O 4通过使用磁铁可以很容易地将其分离,并且可以多次重复利用而不会显着降低催化性能。据我们所知,这些反应以前没有在文献中报道过。