Abstract A series of phosphonate-containing compounds based on dibenzo[ d,f ][1,3,2]dioxaphosphepine 6-oxide (BPPO) is presented. BPPO is synthesized by a three–component condensation and is added to activated alkenes with systematically… Click to show full abstract
Abstract A series of phosphonate-containing compounds based on dibenzo[ d,f ][1,3,2]dioxaphosphepine 6-oxide (BPPO) is presented. BPPO is synthesized by a three–component condensation and is added to activated alkenes with systematically varied structure via phospha-Michael addition. Acrylates, α,β-unsaturated carboxylic acid diesters and benzoquinone are used as activated alkenes. The new compounds are characterized by 1 H, 13 C and 31 P NMR spectroscopy. The as-prepared phosphonates are envisioned to have flame retardant properties.
               
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