Direct One-Pot Synthesis of Phenanthrenes via Suzuki−Miyaura Coupling/Aldol Condensation Cascade Reaction
作者:Young Ha Kim、Hyuk Lee、Yeong Joon Kim、Bum Tae Kim、Jung-Nyoung Heo
DOI:10.1021/jo702001n
日期:2008.1.1
We have developed an efficient cascade reaction, a Suzuki−Miyaura coupling followed by an aldolcondensation, for the construction of phenanthrene derivatives using microwave irradiation. For example, the reaction of methyl 2-bromophenylacetamide with 2-formylphenylboronic acid in the presence of a palladium catalyst and a base provided a biaryl intermediate, which underwent in situ cyclization to