New facile and mild synthesis of 2-substituted oxazolopyridines
作者:Stefan Heuser、Martine Keenan、Andreas G. Weichert
DOI:10.1016/j.tetlet.2005.10.109
日期:2005.12
A new, two-step synthesis of oxazolopyridines is described. The synthesis involving amide formation between o-aminopyridinols and aliphatic or aromatic carboxylic acids followed by condensation with hexachloroethane/triphenylphosphine takes place at room temperature and thereby gives mild access to all regioisomeric, 2-substituted oxazolopyridines in good yields.