Iodine(III)-Mediated Umpolung of Bromide Salts for the Ethoxybromination of Enamides
摘要:
Using (diacetoxylodo)benzene in conjunction with simple bromide salts in ethanol allows the regioselective ethoxybromination of a wide range of enamides, thus yielding highly versatile alpha-bromo hemiaminals, which can then be engaged in a broad array of transformations.
Ligand-free palladium-catalyzed intramolecular Heck reaction of secondary benzylic bromides
作者:Wei Zhou、Guanghui An、Guangqian Zhang、Jianlin Han、Yi Pan
DOI:10.1039/c1ob05231d
日期:——
A facile ligand-free palladium-catalyzed intramolecular Heck reaction of β-hydrogen-containing secondary benzylic bromides was developed, which affords pyrroline derivatives with good regioselectivities.