2-Nitrofuran and 2-nitropyrrole are converted on irradiation into the previously unknown 3-hydroxyiminofuran-2(3H)-one and 3-hydroxyiminopyrrol-2(3H)-one by a process analogous to that reported for the photorearrangement of certain conjugated nitroalkenes. 2-Methyl-5-nitrofuran undergoes an identical rearrangement, whereas 3-methyl-2-nitrofuran is converted into 5-hydroxyimino-3-methylfuran-2(4H)-one.(E 3400) aiid 315 nm (8100).15 Irradiation of a solution in acetone with a medium-pressure mercury arc sur-1

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bury, Kent CT2 7NHPyrex-filtered irradiation of 1 -(2-pyridy1)-and 1 -(3-pyridyl)-2-nitropropene in acetone solution gives 1 -(2-pyridyl)and 1 -(3-pyridyl) -1 -hydroxyiminopropan-2-one, respectively, in high yield.

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