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
Kinetics and mechanisms of nucleophilic displacements with heterocycles as leaving groups. 2. N-benzylpyridinium cations: rate variation with steric effects in the leaving group
作者:Alan R. Katritzky、Azzahra M. El-Mowafy、Giuseppe Musumarra、Kumars Sakizadeh、Choudhry Sana-Ullah、Sayed M. M. El-Shafie、Sukhpal S. Thind
DOI:10.1021/jo00332a013
日期:1981.9
KATRITZKY, A. R.;KASHMIRI, M. AKRAM;WITTMANN, D. K., TETRAHEDRON, 1984, 40, N 9, 1501-1510
作者:KATRITZKY, A. R.、KASHMIRI, M. AKRAM、WITTMANN, D. K.