W. Ried, E. König
Apr 13, 1973
Citations
0
Influential Citations
1
Citations
Journal
European Journal of Organic Chemistry
Abstract
1-Methoxy-1,1,4-triphenyl-2-butin-4-on bildet mit Desoxybenzoin und 2-Aminophenol an der Dreifachbindung Additionsprodukte. Diese reagieren unter sauren Bedingungen mit ihrer Methoxy-diphenylmethyl-Gruppe zu Derivaten des 2,3-Dihydrofurans oder 3,4-Dihydro-2H-1,4-benzoxazins. Substituted 2,3-Dihydrofurans and 3,4-Dihydro-2H-1,4-benzoxazines as Result of Intramolecular Ring-Closures with Diphenylmethylcarbonium Ions 1-Methoxy-1,1,4-triphenyl-2-butyn-4-one adds deoxybenzoin and 2-aminophenol to the triple bond. Under acid conditions the products react with their methoxydiphenylmethyl group to give derivatives of 2,3-dihydrofuran or 3,4-dihydro-2H-1,4-benzoxazine.