4766-33-0Relevant articles and documents
PONy Dyes: Direct Addition of P(III) Nucleophiles to Organic Fluorophores
Butkevich, Alexey N.,Sednev, Maksim V.,Shojaei, Heydar,Belov, Vladimir N.,Hell, Stefan W.
, p. 1261 - 1264 (2018)
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.
Synthesis of Positional Isomeric Phenylphenalenones
Ospina, Felipe,Ramirez, Adrian,Cano, Marisol,Hidalgo, William,Schneider, Bernd,Otálvaro, Felipe
, p. 3873 - 3879 (2017/04/11)
A series of isomeric phenylphenalenones in which the phenyl ring is located at all possible peripheral positions of the phenalenone nuclei was synthesized. The structural characteristics of the series, in which topological variation is permitted with minimal electronic disturbance, could, in principle, allow for easy pharmacophore recognition when the compounds are aligned in steroidomimetic conformations.
Direct cyanation of picolinamides using K4[Fe(CN)6] as the cyanide source
Guan, Dinghui,Han, Lu,Wang, Lulu,Song, He,Chu, Wenyi,Sun, Zhizhong
supporting information, p. 743 - 745 (2015/06/22)
The efficient, simple, and environment-friendly route of direct cyanation of picolinamides has been developed with nontoxic K4[Fe(CN)6] as the cyanide source through Pdcatalyzed C-H bond activation. A series of N-(naphthalene-1- yl)picolinamide derivatives were successfully transformed to the corresponding cyanation products. The cyanation mechanism has also been speculated.