Pd-Catalyzed Carboetherification of β,γ-Unsaturated Oximes: A Novel Approach to Δ2-Isoxazolines
摘要:
A novel route to the synthesis of Delta(2)-isoxazoline derivatives is described. Reaction of beta,gamma-unsaturated oximes with aryl bromides via palladium-catalyzed carboetherification affords 3,5-disubstituted Delta(2)-isoxazolines in good yields. The use of Xantphos as ligand is crucial for the transformation. The carboetherification products can be further converted to beta-hydroxy ketones in the presence of Fe powder and NH(4)Cl.
Pd-Catalyzed Carboetherification of β,γ-Unsaturated Oximes: A Novel Approach to Δ<sup>2</sup>-Isoxazolines
作者:Dahong Jiang、Jinsong Peng、Yuanwei Chen
DOI:10.1021/ol8002173
日期:2008.5.1
A novel route to the synthesis of Delta(2)-isoxazoline derivatives is described. Reaction of beta,gamma-unsaturated oximes with aryl bromides via palladium-catalyzed carboetherification affords 3,5-disubstituted Delta(2)-isoxazolines in good yields. The use of Xantphos as ligand is crucial for the transformation. The carboetherification products can be further converted to beta-hydroxy ketones in the presence of Fe powder and NH(4)Cl.