Enolate Ions as β-Activators of Ortho-Metalation: Direct Synthesis of 3-Aminoindenones
作者:Nadim E. Kayaleh、Ramesh C. Gupta、Francis Johnson
DOI:10.1021/jo991968k
日期:2000.7.1
condensation of benzoate esters with alkyl- or phenylacetonitriles lead to 3-aminoindenones in the presence of excess LDA. This new reaction is also applicable to pyridine carboxylic esters. All of the 3-aminoindenones and their aza analogues can be hydrolyzed by acid to give the corresponding 1,3-indandiones. The mechanism of the reaction falls into the directed-ortho-metalation class in which the initial
A new anionic cyclization reaction: Condensation of benzoate esters with nitriles to give 3-amino-2-inden-1-ones
作者:Nadim E. Kayaleh、Ramesh C. Gupta、John F. Morrissey、Francis Johnson
DOI:10.1016/s0040-4039(97)10181-2
日期:1997.11
β-oxonitriles undergo cyclization to give, in most instances, superior yields of the same compounds. Acid hydrolysis of these indenones leads in high yield to the corresponding biologically active (anticoagulant) indandiones.