9-phenyl xanthene

Meisenbach M, Echner H, Voelter W. New methoxy-substituted 9-phenyl-xanthen-9-ylamine linkers for the solid phase phase synthesis of protected peptide amides. Chem Commun (Cambridge) 1997 849-850. 

Arakawa et al.82) employed various 9-phenyl xanthene derivatives as the dye for DSC, and found that Eosin Y (EY Dye 18) shows relatively high conversion efficiency of 1.3% under 100 mW-cm"2 irradiance. They clarified the efficiency of 9-phenyl xanthene derivatives as follows EY > Dibromofluorescein > Fluorescein = Fluorescin > Rhodamin B > Dichlorofluorescein > Uranine >... 

The photochemicaHy promoted rupture of a benzylic carbon-heteroatom bond is exploited in numerous photolabile protecting groups, for example in the 9-phenyl-xanthen-9-yl (also called pixyl group, X = O in Scheme 13.11) [40] and its sulfur-... 

Dimethoxy-9-phenyl-xanthen 17,169, 9-Methoxy-9-[4-methoxy-phenyl]-xanthen... 

CggHigCLOg 3.6-Dioblor,9 phenyl-xanthen carbonB4aTe (9)- thyle8ter 18 1 446. 

Di thozy-9.phenyl-xanthen 17,168. .y-Di-p-toluyl- -[ .faryl]-wpan 17, 540. x -Oxy- . -mphenyl-a-[a-pnenyI.propylJ. 

Oxy.9.phenyl.xanthen 17 I 80. 9-Phenyl-xanthydrol 17, 138,180, II161. 9-[4.0xy-phenyI]-xanthen 17 I1162. 2-Phenyl- [naphtho-1. 2 5.6-pyranol-(2)]... 

Verbindung Cgll220, yielleicbt 9>Athoxy 3.6 diacetoxy 9-phenyl-xanthen 17 1119. 

S. Sheng, D. Li, T. Lai, X. Liu, C. Song, Organosoluble, low-dielectric-constant fluorinated polyimides based on 9,9-( w[4-(4-amino-2-trifluoromethyl-phenoxy)phenyl]xanthenes, Polym. Int. 60 (8) (2011) 1185-1193. 

Colourless crystals m.p. 174 C. It is obtained by the action of heat on phenyl salicylate. It may be reduced to xanthene. It is the parent substance of the xanthone group of dyestuffs. 

To 4.9 g of finely pulverized sodium in 50 ml of absolute benzene add dropwise with stirring 12 g of chlorobenzene in 50 ml of absolute benzene. As soon as the exothermic reaction begins, maintain the temperature by cooling between 30° and 35°C, and continue stirring for 2 to 3 hours. To the resulting phenyl sodium add dropwise 19.8 g of thio-xanthene in 120 ml of absolute benzene. The slightly exothermic reaction ceases after about 1 to 1 /j hours. 

From the X-ray diffraction data and the calculated sizes of the dye molecules, the conformation of the dye molecules in the interlayer was briefly estimated. Fig. 1 shows the conformation of the dyes, in which the xanthene nucleus of pyronine or rhodamine was positioned parallel, and the phenyl group of rhodamine perpendicular, to the silicate layers of the clay. 

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