Generation and cyclotrimerization of 1,4-dioxacyclohexyne (p-dioxyne)
Abstract
1,4-Dioxacyclohexyne (p-dioxyne) has been generated at low temperature in tetrahydrofuran solution from 2,3-dibromo-1,4-dioxacyclohexene, via 2-bromo-3-lithio-1,4-dioxacyclohexene, and isolated as the corresponding cyclotrimer tris(ethylendioxy)benzene (1,2,3,4,5,6,7,8,9,10,11,12-dodecahydro-1,4,5,8,9,12-hexaoxatriphenylene).