Novel photoreaction of N-alkyl(p-methoxyphenyl)arylamines assisted by protic acids
Abstract
A novel photochemical transformation from N-alkyl(p-methoxyphenyl)arylamines (1a–1f) to 1,2,4-trihydro(4aH)-carbazol-3-ones (2a–2f) is reported with the assistance of protonation at the dihydrocarbazole intermediate followed by sequential formal [1,5]hydrogen, [1,3]hydrogen shifts and