The surprisingly facile dehydrohalogenation of a hydrazonoyl chloride into a stable phosphorus-substituted nitrilimine
Abstract
Tetrachloro-o-benzoquinone reacts with bis(diisopropylamino)thioxophosphoranenitrile N-[(phenyl)(2,4,6-trifluoromethylphenyl)phosphanyl]imide 1b affording the corresponding σ5λ5-phosphorus-substituted nitrilimine 2b; addition of HCl to 2b leads to hydrazonoyl chloride 4b which gives back nitrilimine 2b by simple filtration on silica gel.