Tk. Sarkar et al., Methyl 4,6-dichloro-3-diethylaminofuro[3,4-c]pyridine-1-carboxylate: Synthesis of the first stable azaisobenzofuran by a Hamguchi-Ibata reaction, TETRAHEDR L, 40(2), 1999, pp. 397-398
The title compound, an intermediate in the Hamaguchi-Ibata reaction involvi
ng the Rh-II-catalysed intramolecular reaction of a diazo group with the ca
rbonyl of an adjacent amido group has been isolated and characterized. PM3
calculations reveal the heat of formation(Delta H-f) of this remarkably sta
ble molecule to be -77.69 kcal/mol. (C) 1998 Published by Elsevier Science
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