Steric acceleration in the decomposition of pyridinium cations: a safe alternative to the diazonium conversion of aryl amines into aryl thiocyanates
Abstract
The diphenyl-dihydronaphthopyrylium thiocyanate (8) reacts with aryl amines to give the corresponding N-aryl-dihydrobenzoquinolinium thiocyanates (9)(average yield 88%) which thermolyse smoothly at ca. 200 °C to the aryl thiocyanates (average yield 69%).