Preparative Organic Chemistry
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ChemInform Abstract: Photochemical Rearrangements of 3-Methylisoxazolopyridines.
First published: January 10, 1989
Abstract
Photolysis of the isoxazolopyridines (I), (IV), (VII), and (X) in moist ether results in rearrangement, yielding the oxazolopyridines (II), (V), (VIII), and (XI).
ChemInform Abstract
Photolysis of the isoxazolopyridines (I), (IV), (VII), and (X) in moist ether results in rearrangement, yielding the oxazolopyridines (II), (V), (VIII), and (XI). Additionally, minor amounts of the N-methylcarboxamides (III), (VI), (IX), and (XII) are obtained via 1,2-migration of the methyl group. In contrast, irradiation of the hydrazinoisoxazolopyridine (XIII) produces the N-aminopyrazolopyridine (XIV) which is converted into the pyrazolopyridine (XVII).
