title: Poly(4-vinylpyridinium)hydrogen sulfate: a novel and efficient catalyst for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes under conventional heating and ultrasound irradiation.
abstract: A simple and convenient procedure for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes is described through a one-pot condensation of 2-naphthol with aryl aldehydes in the presence of poly(4-vinylpyridinium)hydrogen sulfate as an efficient, cheap, readily synthesized and eco-friendly catalyst in a solvent free media using conventional heating and ultrasound irradiation.
authors.affiliation: Department of Chemistry, College of Science, University of Guilan, Rasht, P.O. Box 41335-19141, Iran. ngkhaligh@gmail.com
authors.forename: Nader Ghaffari
authors.initials: NG
authors.lastname: Khaligh
mesh_terms: D002384:Catalysis; D006358:Hot Temperature; D011145:Polyvinyls / Q000737:chemistry*; D011726:Pyridinium Compounds / Q000737:chemistry*; D013010:Sonication; D014966:Xanthenes / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D011145:Polyvinyls; D011726:Pyridinium Compounds; D014966:Xanthenes; C572918:poly(4-vinylpyridinium)hydrogen sulfate; C019535:poly(4-vinylpyridine)