111149-13-4Relevant articles and documents
Pyridinethiones XIV. Reactions of 2- and 4-Alkylthiopyridines; Synthesis of 1,6- and 2,7-Naphthyridines via 2-Methylene-1,2-dihydro- and 4-Methylene-1,4-dihydropyridines
Asaad, Fahmy Mekhail,Becher, Jan,Moller, Jorgen,Varma, Karikath Sukumar
, p. 301 - 304 (2007/10/02)
2,4-Bismethylthiopyridinium iodides prepared from 2(1H)-pyridinethiones react regioselectively with active methylene compounds, preferentially at the 4-position, yielding 4-alkylidene-1,4-dihydropyridines.The corresponding 4-benzylthio-2-methylthiopyridin