期刊
TETRAHEDRON LETTERS
卷 50, 期 27, 页码 3840-3844出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2009.04.017
关键词
Bodipy; Pyrene; Sulfobetaine; Water solubility; Fluorescence
Several Bodipy dyes were synthesized with various substituents designed to improve the water solubility. Among the different synthetic strategies protection of sulfonate groups by pyrrole of indopyrrole appears efficient but the deprotection step does not offer viable routes. Conversion of the bromopyrene or iodo Bodipy compounds to sulfobetaine derivatives is feasible either by cross-coupling directly the ethynyl-sulfobetaine or by first cross-coupling 1-(N,N-dimethylamino)-prop-2-yne followed by quaternization of the dimethylamino residue with 1,3-propanesultone. Some of these dyes (Bodipy's and pyrene) are reasonably soluble in water and remain highly fluorescent in polar solvents and water. (c) 2009 Elsevier Ltd. All rights reserved.
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