Journal
ORGANIC LETTERS
Volume 20, Issue 4, Pages 1261-1264Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.8b00270
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Funding
- Bundesministerium fur Bildung und Forschung (BMBF, Germany) [FKZ 13N12995]
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Nucleophilic addition of phosphinic acid, phosphites, sodium dialkyl phosphites, phosphoramidites, phosphinites, and phosphonites to highly polarized or cationic fluorophores, followed by oxidation, results in new PONy dyes with auxochromic phosphinate, phosphonate, or phosphonamidate groups. The reaction was applied to a wide variety of coumarins, (thio)pyronins, and N-alkylacridinium and 5,6-dihydrobenzo[c]xanthen-12-ium salts as well as a meso-chlorinated BODIPY to provide compact dyes with red-shifted absorption and emission bands and Stokes shifts up to 8200 cm(-1)
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