Oxazoles are common substructures in numerous biologically active compounds, synthetic intermediates, and pharmaceuticals. 1-3 Accordingly, many strategies have been developed for the preparation of oxazoles. 1 In the classical and widely used Robinson−Gabriel oxazole synthesis, 4 harsh dehydrating reagents (H 2 SO 4 , P 2 O 5 , SOCl 2 , etc.) are usually required, which restricts the range of tolerated functional groups. Milder protocols for ...
