A General Metal-Assisted Synthesis of α-Halo Oxime Ethers from Nitronates and Nitro Compounds.

Bis(oxy)enamines (I) and (XII) undergo an unprecedented reaction with cobalt(II) halides to produce a variety of cyclic and acyclic ethers of α-halo oximes including previously unavailable trimethylsilyl ethers of α-iodo oximes.