Triarylborane-dipyrromethane conjugates bearing dual receptor sites: the synthesis and evaluation of the anion binding site preference.
The synthesis and optical properties of four new triarylborane-dipyrromethane (TAB-DPM) conjugates (3a-d) containing dual binding sites (hydrogen bond donor and Lewis acid) have been reported. The new compounds exhibit a selective fluorogenic response towards the F(-) ion. The NMR titrations show that the anions bind to the TAB-DPM conjugates via the Lewis acidic triarylborane centre in preference to the hydrogen bond donor (dipyrromethane) units.
Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, India. thilagar@ipc.iisc.ernet.in.
Chinna Ayya
CA
Swamy P
Ragam N
RN
Priyanka
Pakkirisamy
P
Thilagar
D001665:Binding Sites; D001880:Boranes / Q000737:chemistry*; D005459:Fluorides / Q000032:analysis* / Q000737:chemistry; D011758:Pyrroles / Q000138:chemical synthesis* / Q000737:chemistry; D013057:Spectrum Analysis / Q000379:methods; D014961:X-Ray Diffraction
D001880:Boranes; D011758:Pyrroles; C512015:dipyrromethane; D005459:Fluorides