Aerobic oxidation of benzylic alcohols catalysed by new (aryl‐BIAN)copper(I) complexes: Their synthesis and structural characterization
作者:Vitor Rosa、Helena Laronha、Clara S. B. Gomes、Cristina M. Cordas、João Brinco、Flávia Freitas、Marco D. R. Gomes da Silva、Teresa Avilés
DOI:10.1002/aoc.7193
日期:2023.9
behaviour of complexes: 1 (1a, and 1b), 2, and 3 (3a and 3b) and the known compound [Cu(2-iPrC6H4-BIAN)2][BF4] (7) were investigated by cyclic voltammetry. The new complexes 1 (1a, 1b), 2, and 3 (3a, 3b) were tested as catalysts for the aerobic oxidation of benzylic alcohols into aldehydes; they all catalyse the reaction, with good results; the catalytic studies were extended to the similar known complexes
一种新的中性二聚 Ar-BIAN Cu(I) 络合物(其中 Ar-BIAN = 双(芳基亚氨基)苊)的配方 [CuBr(4- i PrC 6 H 4 -BIAN)] 2 ( 2 ) 通过反应获得CuBr 和配体 4- i PrC 6 H 4 -BIAN ( L2 ) 在氩气气氛下在回流乙腈中。当使用的配体是 2,4,6-Me 3 C 6 H 2 -BIAN ( L1 ) 时,我们得到1,其中存在预期的二聚体 ( 1a ),但我们也可以在溶液中观察到存在双螯合物二聚体 [Cu(2,4,6-Me3 C 6 H 2 -BIAN) 2 ][CuBr 2 ] ( 1b ) 带有 CuBr 2 -作为抗衡离子;将他们分开的尝试失败了。当使用的配体是 2- i PrC 6 H 4 -BIAN ( L3 ) 时,我们得到了3,其中预期的二聚体 ( 3a ) 在溶液中与其双螯合物异构体 [Cu(2- i PrC