Abstract
A series of novel functionalised benzophenoxazinones, analogues of Nile Red, is prepared and their fluorescence properties evaluated. The ring system is prepared by reaction of 5-diethylamino-2-nitrosophenol with 1,6-dihydroxynaphthalene followed by alkylation of the 2-hydroxy group with 6-bromohexanoic acid derivatives. Subsequent ester cleavage under a variety of conditions gives the acid 6. Replacement of the 9-diethylamino group with the N-ethyl-(3-sulfonylpropyl)amino group is carried out to increase water solubility and the resulting dye 14 has similar fluorescence properties. The acid 6 is coupled to a range of amino compounds.
| Original language | English |
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| Pages (from-to) | 1051-1058 |
| Number of pages | 8 |
| Journal | Royal Chemical Society. Journal. Perkin Transactions 1 |
| Issue number | 7 |
| Publication status | Published - 7 Apr 1997 |