In our studies on the synthesis of polycyclic nitrogen heterocycles, we investigated the reactions of carbanions and other nucleophiles with nitroaromatic compounds, promoted by the Lewis acids, leading to substituted quinoline, [5] [6] 1-hydroxyindole [6] or 2,1-benzisoxazole [7] and also more complex polycyclic heterocyclic structures. [8] The common intermediates in these one-pot reactions seem to be the s H adducts of the nucleophiles to the nitroarenes, ...
[Helmick, John S.; Martin, Kristy A.; Heinrich, Julie L.; Novak, Michael Journal of the American Chemical Society, 1991 , vol. 113, # 9 p. 3459 - 3466]
