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Eswaran, SV and Neela, HY and Ramakumar, S and Viswamitra, MA (1996) The unusual formation of methyl alpha-(5,6-dimethoxycarbonyl-2,3-dimethoxyazepin-7-ylidene)-alpha-[5-methoxycarbonyl-2,3-dimethoxypyrid-6-yl)acetate during the pyrolysis of ''azido-meta-hemipinate'' - First example of a reaction involving a concomitant ring expansion and ring extrusion. In: Journal of Heterocyclic Chemistry, 33 (4). 1333-1337 .
