Abstract
Novel near-infrared pyrimidine-fused pH fluorescent probes were prepared by an unusual barbiturate-mediated debenzoindolation and subsequent heteroannulation. A plausible mechanistic pathway is proposed, and the final structures were further elucidated by 2D-NMR. All new compounds are highly fluorescent in the near-infrared region and possess excellent spectral sensitivities to environmental pH changes.
Original language | English |
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Pages (from-to) | 29-32 |
Number of pages | 4 |
Journal | Organic Letters |
Volume | 11 |
Issue number | 1 |
DOIs | |
State | Published - Jan 1 2009 |