Photochemical reactions of aziridines

Excellent coverage of the photochemical reactions of aziridines may be found in earlier reviews 73Mi 101-03, B-83MI101-01,84CHEC-i(7)47 . Generally, C—C bond rupture occurs, followed by a wide 

Photochemically induced 1,3-rearrangements of 2-aroyl-3-aryl-2//-azirines result in the formation of either oxazoles or isoxazoles, depending on the wavelength of light used 72JA1199 . Padwa and co-workers have studied the photochemical rearrangement of 2Ff-azirines which bear an unsaturated 

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The thermal and photochemical reactions of aziridines and azirines primarily involve opening of the strained three-membered ring. Aziridines produce azomethine ylides, while 2//-azirines produce nitrile ylides or nitrenes. Typically, these intermediates react further in cycloaddition processes or other rearrangements. 

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