Novel, heterocyclic derivatives of trithiophosphoric acid have been achieved through phosphorylation of quaternary salts of N-heterocycles with phosphorus trichloride, the iminohalophosphines, thus obtained in situ were subjected to nucleophilicsubstitution with mercaptans in organic solvents in the presence of HCl acceptors, preferably triethylamine. Synthesized derivatives exhibited potential insecticidal
Ultraviolet Absorption and Fluorescence Studies of 1-Methyl-2(1H)-Pyridinimine and Derivative in Polar and Non-Polar Solvents
作者:Hassimi Traore、Michael Saunders、Scott Blasiman
DOI:10.1071/ch00053
日期:——
The ultraviolet (u.v.) and fluorescence spectra and relative fluorescenceintensities of 1-methyl-2(1H)-pyridinimine (1-MIP) and1,2-dimethylpyridinimine (2-MIP) were measured in several solvents at roomtemperature. The solvents’ effect on the absorption and fluorescencespectra of MIP indicates that the ππ* transition shifts to higherenergies (shorter wavelengths) are due to solvents’ interactions and
Excellent correlation between substituent constants and pyridinium N-methyl chemical shifts
作者:Sha Huang、Jesse C.S. Wong、Adam K.C. Leung、Yee Man Chan、Lili Wong、Myrien R. Fernendez、Amanda K. Miller、Weiming Wu
DOI:10.1016/j.tetlet.2009.06.081
日期:2009.9
Substituents on the pyridinium ring of N-methylpyridinium derivatives, especially those on the 2- or 4-position, have a large effect on the 1H and 13C NMR chemical shifts of the N-methyl group. Reasonable correlations between the chemical shift changes and the resonance substituentconstants are observed. The dual substituent parameter approach provides an excellent correlation when a combination of
phosphorus trichloride as a phosphorylating agent, fourteen novel chiral cyclic organophosphorus derivatives were achieved using different 2-aminocycloimines as starting material. The resulting five-membered cyclic derivatives have shown the ABCX3 system associated with one phosphorus nucleus in 1H NMR. The present study thus describes a novel synthetic strategy for phospholanes, which are analogous to cyclophosphamides
Synthesis and properties of aza analogs of merocyanine dyes based on N-substituted 2- and 4-aminopyridinium salts
作者:I. A. Borisova、A. A. Zubarev、L. A. Rodinovskaya、A. M. Shestopalov
DOI:10.1007/s11172-018-2054-2
日期:2018.1
A series of aza analogs of the merocyanine dyes based on 1-N-alkyl-2- and 1-N-alkyl-4-aminopyridinium salts and ethoxymethylidenemalononitrile was synthesized. Their physico-chemical properties were studied.