108593-64-2Relevant articles and documents
Syntheses, Structures, and Properties of 1,1-Dialkoxy-2-azapropenylium Salts
Krestel, Magda,Kupfer, Rainer,Allmann, Rudolf,Wuerthwein, Ernst-Ulrich
, p. 1271 - 1280 (2007/10/02)
1,1-Dialkoxy-2-azapropenylium salts 1 were synthesized by alkylation at the oxygen atom of N-methylenecarbamates 4 with trialkyloxonium salts 5, in cases, where steric hindrance makes N-alkylation difficult (4a); otherwise the iminium salts 6 are formed p