76017-62-4Relevant 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
The Preparation of 2,4,6-Triphenylpyrylium Trifluoromethanesulphonate, Fluorosulphonate, Ethoxysulphonate, Naphthalene-2-sulphonate, Stannochloride, Trichloroacetate, and Trifluoroacetate and other Pyrylium Trifluoromethanesulphonates and their Reactions
Katritzky, Alan R.,El-Mowafy, Azzahra M.,Marzorati, Liliana,Patel, Ranjan C.,Thind, Sukhpal S.
, p. 4001 - 4030 (2007/10/02)
The title pyrylium salts are all readily prepared in high yield from 1,3,5-triphenylpent-2-ene-1,5-dione.Amines react with the trifluoromethanesulphonate, naphthalene-2-sulphonate, and trifluoroacetate to give the corresponding pyridinium salts in high yi