Copper-catalyzed amidations of bromo substituted furans and thiophenes
摘要:
The C-N cross-coupling reaction between aromatic halides and amides has now been applied to 2- and 3-substituted bromofurans and bromothiophenes. Catalytic CuI in the presence of N,N'-dimethylethylenediamine as a ligand and K3PO4 or K2CO3 as the base furnished 2- and 3-substituted amidofurans and thiophenes ranging from 11 to 99% depending on the particular amide source used. (C) 2002 Published by Elsevier Science Ltd.
Copper-catalyzed amidations of bromo substituted furans and thiophenes
作者:Kenneth R Crawford、Albert Padwa
DOI:10.1016/s0040-4039(02)01725-2
日期:2002.10
The C-N cross-coupling reaction between aromatic halides and amides has now been applied to 2- and 3-substituted bromofurans and bromothiophenes. Catalytic CuI in the presence of N,N'-dimethylethylenediamine as a ligand and K3PO4 or K2CO3 as the base furnished 2- and 3-substituted amidofurans and thiophenes ranging from 11 to 99% depending on the particular amide source used. (C) 2002 Published by Elsevier Science Ltd.