The Biginelli Reaction with an Imidazolium-Tagged Recyclable Iron Catalyst: Kinetics, Mechanism, and Antitumoral Activity
作者:Luciana M. Ramos、Bruna C. Guido、Catharine C. Nobrega、José R. Corrêa、Rafael G. Silva、Heibbe C. B. de Oliveira、Alexandre F. Gomes、Fábio C. Gozzo、Brenno A. D. Neto
DOI:10.1002/chem.201204314
日期:2013.3.25
The present work describes the synthesis, characterization, and application of a new ion‐tagged iron catalyst. The catalyst was employed in the Biginelli reaction with impressive performance. High yields have been achieved when the reaction was carried out in imidazolium‐based ionicliquids (BMI⋅PF6, BMI⋅NTf2, and BMI⋅BF4), thus showing that the ionic‐liquid effects play a role in the reaction. Moreover
Zn-CurOAc, as a bio-metal–organic framework (MOF) has been prepared and evaluated in the one-pot three-component Biginelli condensation reaction of substituted aromatic aldehydes, urea, and dimedone in ethanol. Zn-CurOAc shows an excellent catalytic performance for the synthesis of tetrahydroquinazolinone derivatives at room temperature with high turnover frequency (TOF) values (5.43–10.86 h−1). The chemical