REARRANGEMENT OF 2,2'-DIPROPIONYLAZOXYBENZENES TO 3-BENZOISOXAZOLES
2,2'-Dipropionylazoxybenzenes undergo rearrangement to the corresponding 3-benzoisoxazoles in the case of base catalysis; this transformation is realized only in the case of ortho,ortho' orientation of the propionyl groups in the substrate molecule and with the participation of the solvent as a reagent.A mechanism for the rearrangement that assumed the participation of one of the propionyl groups in intramolecular reduction of the azoxy group to an azo group is proposed.
Mochalov, S. S.,Fedotov, A. N.,Shabarov, Yu. S.
p. 593 - 598
(2007/10/02)
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