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Paper | Regular issue | Vol 26, No. 9, 1987, pp.2419-2424
Published online, 1st January, 1970
DOI: 10.3987/R-1987-09-2419
3-Phenyl-5-carbomethoxymethylene-5H-isoxazolo[4,5-e][1,4]diazepine-6,8(4H,7H)-dione: A New Seven Membered Binuclear System

Rodolfo Nesi, Donatella Giomi, Laura Quartara, Sandro Papaleo, and Piero Tedeschi

*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 ring closure of the Michael-type adduct (5), easily available from the nitro ester (2) through the corresponding amino derivatives (3) and (4), afforded the previously unreported heterocyclic system (6) in good yields; some spectral features of the new products were emphasized.