The synthesis of N-glycosylated quinolin-2-ones via an intramolecular N-arylation of glycosylamides is reported. The coupling involves the use of only Pd(OAc)2 as the catalyst and nBu4NOAc as the base in 1,4-dioxane. This versatile approach allows the synthesis of various N-glycosylated quinolin-2-ones with exclusive α or β selectivity.
An efficient and selective domino Heck/Buchwald–Hartwig arylations of readily available N‐glycosylcinnamamides with aryl iodides have been established. Using palladium(II) acetate as a catalyst, potassium acetate as the base and tetrabutylamonium bromide as an additive in dioxane, the protocol proved to be general, and a variety of 4‐aryl‐N‐glycosylquinolin‐2‐ones has been prepared in good yields with exclusive α‐ or β‐selectivity.magnified image
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