Jerchel et al., Chemische Berichte, 1956, vol. 89, p. 2921,2928
作者:Jerchel et al.
DOI:——
日期:——
KATRITZKY A. R.; BELTRAMI H.; KEAY J. G.; ROGERS D. N.; SAMMES M. P.; LEU+, ANGEW. CHEM., 1979, 91, NO 10, 856-857
作者:KATRITZKY A. R.、 BELTRAMI H.、 KEAY J. G.、 ROGERS D. N.、 SAMMES M. P.、 LEU+
DOI:——
日期:——
SAMMES M. P.; LEUNG C. W. F.; MAK C. K.; KATRITZKY A. R., J. CHEM. SOC. PERKIN TRANS., 1981, PART 1, NO 5, 1589-1590
作者:SAMMES M. P.、 LEUNG C. W. F.、 MAK C. K.、 KATRITZKY A. R.
DOI:——
日期:——
Synthetic applications of N–N linked heterocycles. Part 12. The preparation of 4-alkylthio- and 4-arylthio-pyridines by regiospecific attack of thioalkoxide lons on N-(4-oxopyridin-1-yl)pyridinium salts
作者:Michael P. Sammes、Christopher W. F. Leung、Chi Keung Mak、Alan R. Katritzky
DOI:10.1039/p19810001585
日期:——
Thiolate ions add regiospecifically to N-(4-oxopyridin-1-yl)pyridinium salts (2)–(7) to give in good to excellent yields only the 1,4-dihydropyridine adducts (8)–(13), regardless of whether or not the pyridone moiety carries substituents for sterically shielding the 2- and 6-positions of the pyridinium ring. The addition is believed to be thermodynamically controlled. Decomposition of the dihydro-adducts