title: Tetrasubstituted olefinic xanthene dyes: synthesis via Pd-catalyzed 6-exo-dig cyclization/C-H activation of 2-bromobenzyl-N-propargylamines and solid state fluorescence properties.
abstract: Tetrasubstituted olefin based new xanthene derivatives have been synthesized via palladium-catalyzed carbopalladation/C-H activation of 2-bromobenzyl-N-propargylamine derivatives. The synthesized compounds display a pronounced solid state fluorescence due to their restricted internal rotation of a C-Ar bond in the solid or aggregation state.
authors.affiliation: Organic Chemistry Division, CSIR-Central Leather Research Institute, Adyar, Chennai-600 020, India.
authors.forename: Avanashiappan
authors.initials: A
authors.lastname: Nandakumar
authors.forename: Paramasivan Thirumalai
authors.initials: PT
authors.lastname: Perumal
mesh_terms: D000475:Alkenes / Q000737:chemistry; D002384:Catalysis; D004396:Coloring Agents / Q000138:chemical synthesis* / Q000737:chemistry; D005453:Fluorescence; D015394:Molecular Structure; D010165:Palladium / Q000737:chemistry*; D010293:Pargyline / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry; D011437:Propylamines / Q000138:chemical synthesis* / Q000737:chemistry; D014966:Xanthenes / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D000475:Alkenes; D004396:Coloring Agents; D011437:Propylamines; D014966:Xanthenes; C009054:propargylamine; D010165:Palladium; D010293:Pargyline