Chemoselective Aromatic C–H Insertion of α-Diazo-β-ketoesters Catalyzed by Dirhodium(II) Carboxylates
摘要:
The ability of alpha-diazo-beta-ketoesters bearing a substituent on the benzylic position to undergo aromatic C-H insertion is described. Good to excellent yields of the aromatic C-H insertion products were observed with Rh-2(tpa)(4) or Rh-2(esp)(2) catalysts. This is an attractive strategy to prepare tetralins carrying a methyl group on the benzylic position, a structural motif found in several types of natural products.
Chemoselective Aromatic C–H Insertion of α-Diazo-β-ketoesters Catalyzed by Dirhodium(II) Carboxylates
作者:Esdrey Rodriguez-Cárdenas、Rocío Sabala、Moisés Romero-Ortega、Aurelio Ortiz、Horacio F. Olivo
DOI:10.1021/ol202968z
日期:2012.1.6
The ability of alpha-diazo-beta-ketoesters bearing a substituent on the benzylic position to undergo aromatic C-H insertion is described. Good to excellent yields of the aromatic C-H insertion products were observed with Rh-2(tpa)(4) or Rh-2(esp)(2) catalysts. This is an attractive strategy to prepare tetralins carrying a methyl group on the benzylic position, a structural motif found in several types of natural products.