84389-41-3Relevant articles and documents
Trifluoromethanesulphonic Acid as Cyclodehydrating Agent: Synthesis of Nitrogen Heterocycles via 5,6-Dihydro-2,4-diphenylpyrylium Cation
Elshafie, Sayed Mahmoud M.
, p. 586 - 588 (2007/10/02)
N-Substituted 5,6-dihydro-2,4-diphenylnaphtho-pyridinium triflates (5a-q) have been prepared in high yields by the condensation of 5,6-dihydro-2,4-diphenylnaphthopyrylium triflate (4) with different amines.The pyrylium salt (4) in turn can b