329200-99-9Relevant academic research and scientific papers
Reaction of trihalo(phenylenedioxy)phosphoranes with arylacetylenes: VII. Regiochemistry of reaction 2,2,2-tribromo-5-halobenzo[d]-[1,3, 2λ5]dioxaphospholes with arylacetylenes
Mironov,Azancheev,Musin,Konovalov
, p. 541 - 548 (2005)
It was for the first time shown that 2,2,2-tribromo- and 2,2-dibromo-2-fluoro-5-halobenzo[d]-[1,3,2λ5]dioxaphospholes react with arylacetylenes with preferential formation of heterocycles monohalogenated in the benzo fragment, viz. 4-aryl-2-bromo(fluoro)-7- halobenzo[e][1,2]oxaphosphinines. Their structure was established by NMR spectroscopy. By varying in such a way the nature of the halogen at the phosphorus atom one can obtain 6- or 7-halo-substituted regioisomers of benzo[e][1,2]oxaphosphinines. 2005 Pleiades Publishing, Inc.
