Beilstein J. Org. Chem.2009,5, No. 66, doi:10.3762/bjoc.5.66
-methyl-3-oxo-pentanoic acid phenylamide with tertiary butyl carbazate and subsequent condensation of the resulting carbamate derivative with a chalcone provided a facile new approach to pyrrolo[1,2-b]pyridazine derivatives.
Keywords: 1,4-diketone; migrationandcyclization; pyrrolo[1,2-b]pyridazine