N,N′-(Phenylmethylene)diacetamide Analogues as Economical and Efficient Ligands in Copper-Catalyzed Arylation of Aromatic Nitrogen-Containing Heterocycles
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
Synthesis and Preliminary Pharmacological Evaluation of a Series of N,N′-Arylidenebis(acid amides)
作者:Theron A. Ebel、Arthur A. Harwood、Allan M. Burkman
DOI:10.1021/jm00317a045
日期:1967.9
<i>N</i>,<i>N</i>′-(Phenylmethylene)diacetamide Analogues as Economical and Efficient Ligands in Copper-Catalyzed Arylation of Aromatic Nitrogen-Containing Heterocycles
N,N′-(Phenylmethylene)diacetamide analogues which were simply prepared from the condensation reaction of an aldehyde with an amide or urea were found to be efficient ligands in copper-catalyzed coupling reaction of aryl halides with various azole nucleophiles. The newly developed ligand showed broad application scope in this conversion. Compounds including imidazoles, benzoimidazoles, pyrrole, indole, and benzotriazole were successfully arylated with diversified aromatic halides to give corresponding products in moderate to excellent yields.