137661-29-1Relevant articles and documents
Photoreactivity of 4-nucleophile-substituted isoxazoles
Donati, Donato,Fusi, Stefania,Ponticelli, Fabio
, p. 329 - 334 (2007/10/02)
The photoreactivity of 1a-1c under steady-state irradiation has been examined and the photoproducts characterized.Several heterocycloes were obtained: 1a gave the pyrrazolines 6 and 7 and the triazine 8; 1b yielded the azetidine 9 and the imidazole 10; 1c gave the imidazole 10, the piperazine 15, the aziridine 16 and the pyrazole 19.In addition, open-chain products were obtained, i.e., the methylaminovinyl ketone 12 from 1b and the enaminones 17 and 18 from 1c.While the formation of most of the products can be explained via the expected intermediate ketenimines, azirines and nitrile ylides, new pathways are involved in the formation of the isoxazole 13 and the pyrazole 19 from 1c