Nuclear fluorination of 2,4-diarylthiazoles with Accufluor®
作者:Timmeda F. Campbell、Chad E. Stephens
DOI:10.1016/j.jfluchem.2006.08.007
日期:2006.12
A series of 2,4-diphenylthiazole derivatives were synthesized and directly fluorinated at the 5-position by reaction with the N-F fluorinating reagent Accufluor (R). Although fluorination occurred selectively at the thiazole ring, it was always incomplete and thus yields for the novel fluorinated products were low to moderate (19-43%) following purification to remove starting material. Nonetheless, the target compounds were obtained in a convenient and straightforward manner. Selectfluor (R) was not as effective as Accufluor (R) as it gave a trace amount of the 5-chlorothiazole that was difficult to remove by chromatography. (c) 2006 Elsevier B.V. All rights reserved.
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