Abstract
Six-membered cyclic nitronates smoothly react with trialkylsilyl cyanide/ButMe2SiOTf or tert-butyl isocyanide/ButMe2SiOTf systems to afford 2-trialkylsilyloxy-3-cyanotetrahydro-[4H]-1,2-oxazines or δ-oxo-α-trialkylsilyloximinonitriles depending on the ring-sub- stitution pattern.
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