been developed for the conversion of the oximes of alpha-aryl ketones to azirines. On heating, the azirines rearrange smoothly to the corresponding indoles. The overall transformation offers a versatile route to indoles, complementary to the Fischer indole synthesis.
Rhodium-Catalyzed Intramolecular C−H Insertion of α-Aryl-α-diazo Ketones
作者:Douglass F. Taber、Weiwei Tian
DOI:10.1021/jo0624694
日期:2007.4.1
Direct diazo transfer proceeds smoothly with alpha-aryl ketones. The derived alpha-aryl-alpha-diazo ketones cyclize efficiently with Rh catalysis to give the corresponding alpha-aryl cyclopentanones.