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Paper | Regular issue | Vol 24, No. 12, 1986, pp.3467-3471
Published online, 1st January, 1970
DOI: 10.3987/R-1986-12-3467
Solid State Photodimerization Reaction of Some 3-Sytrylisoxazolo[3,4-d]pyridazin-7(6H)-ones

Stefano Chimichi,* Giovanna Ciciani, Vittorio Dal Piaz, Francesco De Sio, Piero Sarti-Fantoni, and Tomas Torroba

*CNR, Centro di Studio Sulla Chimica e la Struttura dei Composti Eterociclici e lolo Applicazioni, c/o Dipartimento di Chimica Organica "Ugo Schiff", Università di Firenze, Via Gino Capponi 9, I-50121 Firenze, Italy


The solid state irradiation of the title compounds 4a-b gave two colourless products which were recognized as the corresponding dimers 5a-b. The cyclobutane centrosymmetric structure of the dimers was demonstrated by taking into account the spectroscopic data and the nature of the oxidation products 6a-b.