- Novel five- to ten-membered organoselenium heterocycles from the seienation of aromatic diols
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Reaction of Woollins' reagent - WR, 2,4-bis(phenyl)-1,3- diselenadiphosphetane 2,4-diselenide [[PhP(Se)(μ-Se)}2] - with aromatic diols in refluxing toluene afforded a series of novel five- to ten-membered phosphorus-selenium heterocycles 1-10 with an O-P(Se)-O or O-P(Se)-Se-P(Se)-O or O-P(Se)-OP(Se)-O linkage in 12-74% isolated yields. It was found that the diphosphorus species O-P(Se)-Se-P(Se)-O rings could be readily reduced into the monophosphorus species O-P(Se)O rings in almost quantitative yields via further reaction with another equivalent of corresponding aromatic diol. All new compounds have been characterized by IR 1H NMR 13C NMR 31P NMR 77Se NMR, mass spectrometry and elemental analysis or accurate mass measurement. Seven representative X-ray structures are reported.
- Hua, Guoxiong,Fuller, Amy L.,Slawin, Alexandra M. Z.,Woollins, J. Derek
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experimental part
p. 2607 - 2615
(2010/09/05)
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