A single-step preparation of thiazolo[5,4-<i>b</i>]pyridine- and thiazolo[5,4-<i>c</i>]pyridine derivatives from chloronitropyridines and thioamides, or thioureas
作者:Kiran P. Sahasrabudhe、M. Angels Estiarte、Darlene Tan、Sheila Zipfel、Matthew Cox、Donogh J. R. O'Mahony、William T. Edwards、Matthew A. J. Duncton
DOI:10.1002/jhet.185
日期:2009.11
A one-step synthesis of thiazolo[5,4-b]pyridines from an appropriately substituted chloronitropyridine and thioamide, or thiourea, is presented. In particular, the reaction was used to prepare a large number of 6-nitrothiazolo[5,4-b]pyridine derivatives, bearing hydrogen, alkyl, substituted alkyl, cycloalkyl, aryl, heteroaryl, and amine substituents at the 2-position. The reaction could also be extended
提出了由适当取代的氯硝基吡啶和硫代酰胺或硫脲一步合成噻唑并[5,4- b ]吡啶的方法。特别地,该反应用于制备大量的6-硝基噻唑并[5,4- b ]吡啶衍生物,其在2-位带有氢,烷基,取代的烷基,环烷基,芳基,杂芳基和胺取代基。该反应也可以扩展以产生在吡啶环上具有替代取代基的噻唑并[4,5- c ]吡啶衍生物和噻唑并[5,4- b ]吡啶。J.杂环化学,(2009)。