Biimidazol‐2‐yl–BF 2 complexes
1993; Wiley; Volume: 4; Issue: 6 Linguagem: Inglês
10.1002/hc.520040614
ISSN1098-1071
AutoresTimothy W. Ross, Govindarao Sathyamoorthi, Joseph H. Boyer,
Tópico(s)Fluorine in Organic Chemistry
ResumoAbstract Nonfluorescent 4,4′,5,5′‐tetramethyl‐ and 4,5,4′,5′‐bistetramethylene biimidazol‐2‐yls 5 and 6 combined with boron trifluoride to give the tetramethyl and bistetramethylenebiimidazol‐2‐yl–BF 2 complexes 9 and 10 isolated as strongly fluorescent BF 3 salts, λ f (dichloromethane): 377 nm Φ 0.93 and 386 nm Φ 0.90. Similarly, fluorescent bibenzimidazol‐2‐yl 7 , λ f (ethanol), 370 nm Φ 0.14, gave a BF 2 complex 11 isolated as a BF 3 salt λ f (ethanol), 417 nm Φ 0.68.
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