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Derivate des Benzo[1.3]dioxols, 47 [1]. Darstellung und Reaktionen des 4.8-Dimethoxy-bis[1.3]dioxolo[4.5]benzo- [1.2-d; 1′ .2′ -f] [1.3]dioxepins / Derivatives of 1,3-Benzodioxoles, 47 [1]. Preparation and Reactions of 4,8-Dimethoxy-bis[1,3]dioxolo[4,5]benzo- [1,2-d; 1',2'-f][1,3]dioxepine
1983
Zeitschrift für Naturforschung. B, A journal of chemical sciences
In 1957 some dibenzo[d,f][1,3]dioxepines were isolated from Cercospora kikuchii. We describe the preparation of 4,8-dimethoxy-bis[1,3]dioxolo[4,5]benzo[1,2-d; 1',2'-f][1,3]-dioxepine (3). It shows a high SE-reactivity. Bromination yields the monobromo-and dibromocompounds 3 a and 3 b. Treatment of 3 with copper(II) nitrate leads to the dinitrocompound 3c. With the same reagent 3a gives 3d. Reduction of 3d with hydrogen and Palladium as catalyst yields the mono-amine 3e under bromine loss. Under
doi:10.1515/znb-1983-0320
fatcat:pzvew65cgjba7muuyozk467ajm