63673-39-2Relevant articles and documents
Nitrosation of 2-Aryl-3,5-dimethyl-1,1-dioxo-1,2-thiazines - an Unusual Ringtransformation to Mesoionic Pyridazinium Salts
Fanghaenel, E.,Hucke, A.,Hasan, H.,Ullrich, K.,Radeglia, R.,Simonsen, O.
, p. 104 - 108 (2007/10/02)
The thiazines 1b-e, g, h react with isoamyl nitrite/HClg by nitrosation of the 3-methyl group to the 3-cyano-thiazines 3b-e, g, h.As by-products the mesoionic pyridazinium salts 4b, c are formed.The compounds 4b-i and 4-1e-i became main products by nitros