Conformational studies on twelve-membered heterocycles. Crystal structure of 5,18 – dimethyl – 5,18 – diazatribenzo[a,e,i] – cyclododecene – 6,17(5H,18H) – dione
Conformational studies on twelve-membered heterocycles. Crystal structure of 5,18 – dimethyl – 5,18 – diazatribenzo[a,e,i] – cyclododecene – 6,17(5H,18H) – dione, (W. D. Ollis, J. S. Stephanatou, J. F. Stoddart, A. Quick, D. Rogers, and D. J. Williams), Angew. Chem. Int. Ed. Engl. 1976, 15, 757-759.