Flash vacuum pyrolysis of one example from a wide range of α-benzotriazolyl-β-oxo phosphorus ylides results in extrusion of Bun3P to give 3-acetyl-1,2,4-benzotriazine and o-cyanoacetophenone, products apparently derived from rearrangement of the initially formed title carbene, and involving in the latter case a novel 1,3-acetyl migration process.
R. A. Aitken, I. M. Fairhurst, A. Ford, P. E. Y. Milne, D. W. Russell and M. Whittaker, J. Chem. Soc., Chem. Commun., 1993, 1517 DOI: 10.1039/C39930001517
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