[CuII-Hfur–imidazole] compounds as precursors of efficient hydrogenation and reductive alkylation catalysts in flow systems
作者:Kseniya A. Koshenskova、Denis N. Nebykov、Anastasia V. Razvalyaeva、Alexandr O. Panov、Vladimir M. Mokhov、Fedor M. Dolgushin、Dmitriy E. Baravikov、Nikolay P. Simonenko、Tatiana L. Simonenko、Valery G. Shtyrlin、Anton V. Ermolaev、Matvey V. Fedin、Andrey V. Khoroshilov、Igor L. Eremenko、Irina A. Lutsenko
DOI:10.1016/j.poly.2023.116744
日期:2024.1
selectivity (97 %) of the catalyst obtained from an ethanolic solution of complex 1 in the reaction of partial hydrogenation to DHDCPD under continuous process conditions even at high conversion values (up to 96 %) and with an excess of hydrogen, whereas the catalyst obtained from an aqueous solution of complex 1 showed 98 % total hydrogenation product (THDCPD) selectivity. The catalysts based on all the complexes
乙酸铜(II)与糠酸(2Hfur / 3Hfur)和咪唑(Im)在甲醇中反应生成单核配合物[Cu(fur) 2 ( Im ) 2 (H 2 O)]·L (fur - = 2fur) - ( 1 , 2 ), 3fur - ( 3 ) ;L = MeCN ( 1 ) ),其结构通过直接单晶X射线分析确定。首次发现用四氢硼酸钠化学还原1、2、3 (从溶液中预沉积在表面)得到的固定在γ-Al 2 O 3 表面的铜纳米粒子表现出高的单-选择性。和三环[5.2.1.0 2,6 ]十-3,8-二烯(二环戊二烯,DCPD)的二氢化。催化活性测试表明,在连续工艺条件下,即使在高转化率(高达 96%)和过量的情况下,从配合物1的乙醇溶液中部分加氢生成 DHDCPD 的反应中获得的催化剂也具有高选择性(97%)。氢,而从配合物1的水溶液获得的催化剂显示出 98% 的总氢化产物 (THDCPD) 选择性。基于所有配合物1