A convenient synthesis of bisamide from aldehyde and amide with BF3 etherate as catalyst was reported. Both aryl and aliphatic bisamides could be prepared with this procedure in high yield at room temperature and the catalyst loading as low as 0.5 mol % was achieved. Fine-tuned solvent was utilized for both rapid conversion and simple isolation. Two CB2 receptor inverse agonists were synthesized with
The synthesis and structure of pyridine-oxadiazole iridium complexes and catalytic applications: Non-coordinating-anion-tuned selective C N bond formation
作者:Wei Yao、Yilin Zhang、Haiyan Zhu、Chenyang Ge、Dawei Wang
DOI:10.1016/j.cclet.2019.08.049
日期:2020.3
Abstract Several novel pyridine-oxadiazole iridium complexes were synthesized and characterized through X-ray crystallography. The designed iridium complexes revealed surprisingly high catalytic activity in CN bondformation of amides and benzyl alcohols with the assistance of non-coordinating anions. In an attempt to achieve borrowing hydrogen reactions of amides with benzyl alcohols, N,N'-(phenylmethylene)dibenzamide
Abstract Silica-bonded S-sulfonic acid nanoparticles (SBSSANPs) were easily synthesized from silica nanoparticles and showed to be an efficient catalyst in the synthesis the symmetrical N,N′-alkylidene bisamides. Reaction of aldehydes and amides in the presence of the catalyst afforded the corresponding bisamides in good to excellent yields. The extensive range of substrates suggests general applicability
This work presents preparation of a surface modified magnetically tuned solid acid where thiol groups were grafted on magnetic halloysite, followed by oxidation of thiol groups to sulfonicacid groups. The physicochemical properties of the catalyst were analyzed by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), powder X-ray diffraction (XRD), high resolution transmission
A mild, efficient, and environmentally friendly synthesis of N,N′-arylidene bisamides using B(HSO4)3 under solvent-free conditions
作者:Zahed Karimi-Jaberi、Baharak Pooladian
DOI:10.1007/s00706-012-0848-8
日期:2013.5
AbstractA green, efficient, and rapid procedure for the synthesis of N,N′-arylidene bisamide derivatives has been developed by one-pot condensation of aldehydes and amides in the presence of tris(hydrogensulfato)boron as a highly effective heterogeneous catalystundersolvent-freeconditions at 100 °C. Various aromatic aldehydes, acetamide or benzamide were used in the reaction, and in all cases the