A new synthesis of 1,5-dicarbonyl compounds under neutral conditions
作者:Noboru Ono、Hideyoshi Miyake、Aritsune Kaji
DOI:10.1039/c39830000875
日期:——
Michael addition of α-nitroketones to methyl vinyl ketone or acrylaldehyde followed by denitration with Bu3SnH affords 1,5-dicarbonylcompounds in good yields.
The reaction of α-nitro ketones to the corresponding α-hydroxy ketones under basic aqueous conditions, a novel transformation, was studied. The investigation revealed that the reaction is only possible with α-nitro ketones that are CH-acidic in the α′-position and readily deprotonated under the reaction conditions. The NO2/OH exchange was established to proceed with retention of configuration at the