title: Direct synthesis of fluorescent 1,3a,6a-triazapentalene derivatives via click-cyclization-aromatization cascade reaction.
abstract: An efficient and versatile method was established for the preparation of 1,3a,6a-triazapentalenes. The 1,3a,6a-triazapentalene skeleton without an additional fused ring system was discovered to be a compact and highly fluorescent chromophore, which exhibited various interesting fluorescent properties such as a noteworthy correlation of luminescent wavelength with the Hammett σ(p) value and a strongly positive solvatofluorochromism.
authors: Division of Chemistry, Graduate School of Science, Hokkaido University, Kita-ku, Sapporo 060-0810, Japan. namba@mail.sci.hokudai.ac.jp
authors: Kosuke
authors: K
authors: Namba
authors: Ayumi
authors: A
authors: Osawa
authors: Shoji
authors: S
authors: Ishizaka
authors: Noboru
authors: N
authors: Kitamura
authors: Keiji
authors: K
authors: Tanino
mesh_terms: D019086:Bridged Bicyclo Compounds, Heterocyclic / Q000138:chemical synthesis* / Q000737:chemistry; D057930:Click Chemistry; D018360:Crystallography, X-Ray; D003500:Cyclization; D005453:Fluorescence; D008958:Models, Molecular; D015394:Molecular Structure; D013237:Stereoisomerism
chemical_list: C568178:1,3a,6a-triazapentalene; D019086:Bridged Bicyclo Compounds, Heterocyclic