The invention is directed to a process to prepare ε-caprolactam and/or unsaturated ε-caprolactam from a pentenamide by contacting the pentenamide with a mixture of hydrogen and carbon monoxide in the presence of a solvent and a catalyst system comprising of a Group 8-10 metal and a phosphorus-donor ligand. The ligand may be a xantphos-type ligand.
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(2014/10/18)
Pyrolytic study of cyclic 2-azidoketones
Flash vacuum pyrolysis of 2-azidocyclohexanone (1) gave a condensed dimer (6), a ring expanded product (7) and 2-methylpyridine (8). On the other hand, pyrolysis of 2-azidocyclopentanone (4) and 2-azidocycloheptanone (5) gave ring expanded products (12) and (13), respectively, as the main products.