Palladium-Catalyzed Intramolecular O-Arylation of Enolates: Application to Benzo[b]furan Synthesis
摘要:
A catalyst generated from Pd-2(dba)(3) and the ligand DPEphos effects intramolecular C-O bond formation between enolates and aryl halides in the conversion of 1-(2-haloaryl)ketones directly into the corresponding benzofurans. Both cyclic and acyclic ketones are efficient substrates. Thio ketones can also be employed allowing the preparation of the corresponding benzothiophenes.
Palladium-Catalyzed Intramolecular O-Arylation of Enolates: Application to Benzo[b]furan Synthesis
摘要:
A catalyst generated from Pd-2(dba)(3) and the ligand DPEphos effects intramolecular C-O bond formation between enolates and aryl halides in the conversion of 1-(2-haloaryl)ketones directly into the corresponding benzofurans. Both cyclic and acyclic ketones are efficient substrates. Thio ketones can also be employed allowing the preparation of the corresponding benzothiophenes.
Palladium-Catalyzed Intramolecular <i>O</i>-Arylation of Enolates: Application to Benzo[<i>b</i>]furan Synthesis
作者:Michael C. Willis、Dawn Taylor、Adam T. Gillmore
DOI:10.1021/ol047993g
日期:2004.12.1
A catalyst generated from Pd-2(dba)(3) and the ligand DPEphos effects intramolecular C-O bond formation between enolates and aryl halides in the conversion of 1-(2-haloaryl)ketones directly into the corresponding benzofurans. Both cyclic and acyclic ketones are efficient substrates. Thio ketones can also be employed allowing the preparation of the corresponding benzothiophenes.