Two perhalo-1,4-dioxins, representatives of a previously unknown class of compounds, have been synthesized and shown to exhibit unusual reactivity. In particular, reaction with oxygen is spontaneous and exothermic, and radical-catalyzed homopolymerization will proceed through a fluorinated double bond. Representatives of the perhalo-2,3-dihydro-1,4-dioxin class have also been prepared and found to have reactivity in general intermediate to that of the perhalodioxoles and acyclic trifluorovinyl ethers. Computational studies of the two systems established that introduction of the first double bond raises the energy substantially, while the second double bond results in a near-planar ring with dramatically increased energy content.
KRESPAN, CARL G.;DIXON, DAVID A., J. ORG. CHEM., 56,(1991) N2, C. 3915-3923
作者:KRESPAN, CARL G.、DIXON, DAVID A.
DOI:——
日期:——
POLYHALODIHYDRODIOXINS AND POLYHALODIOXOLES
申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP0491872B1
公开(公告)日:1994-08-03
US5026801A
申请人:——
公开号:US5026801A
公开(公告)日:1991-06-25
US5334731A
申请人:——
公开号:US5334731A
公开(公告)日:1994-08-02
[EN] POLYHALODIHYDRODIOXINS AND POLYHALODIOXOLES
申请人:——
公开号:WO1991004251A2
公开(公告)日:1991-04-04
[FR] Halodihydrodioxines, leur préparation et leurs polymères produisant des homopolymères amorphes résistant au déclenchement cyclique de réactions secondaires. On peut utiliser les polymères ainsi obtenus pour des films et des objets moulus thermostables, des revêtements pour substrats tels que le bois, le verre, le papier et le métal ainsi que dans des conditionnements protecteurs. L'invention concerne également la préparation de dioxoles polyhalogénés.