aliphatic and aromatic carboxylic acids to their corresponding nitro compounds using nitroniumtetrafluoroborate and silver carbonate in dimethylacetamide has been described. This transformation is believed to proceed via the alkyl-silver or aryl-silver intermediate, which subsequently reacts with the nitroniumion to form nitro substances. Mild reaction conditions, tolerant of a broad range of functional
The c-alkylation of nitroalkame anions by l-substituted-2--butyl-4-phenyl- and -2,4-diphenyl-5,6-dihydrobenzo(ulbarh]quinolinium cations
作者:Alan R. Katritzky、M. Akram Kashmiri、Dieter K. Wittmann
DOI:10.1016/s0040-4020(01)91797-1
日期:1984.1
- The N-substituents are transferred from the title cations to the C-atom of nitroalkane anions in highyield at 25-80°C in DMSO solution. The title cations are readily available from the appropriate pyrylium cations and primary amines of types RCH2,NH2, and RR'CHNH2, allowing a general 2-step method for the preparation of higher nitro- alkanes. Spectral properties of a variety of nitroalkanes are
The non-chain radicaloid c-alkylation of nitronate anions: further evidence for the mechanism
作者:Alan R. Katritzky、Jen-luan Chen、Charles M. Marson、Angelamaria Maia、M.Akram Kashmiri
DOI:10.1016/s0040-4020(01)87407-x
日期:1986.1
The effects of the variation of solvent, pyridinium leaving group, -substituent, and nitronate nucleophile have been studied in the -alkylation of nitronateanions. These variations and studies of the effects of inhibitors, attempted entrainment reactions, and ESR work are all in accord with our previously suggested mechanism.