81176-00-3Relevant academic research and scientific papers
REACTIONS OF STERICALLY HINDERED PHOSPHINES WITH CARBON TETRAHALIDES: P-HALOGENYLIDS
Kolodyazhnyi, O. I.
, p. 2125 - 2137 (2007/10/02)
1.A study has been made of the effects of steric factors on the reactions of tertiary phosphines with carbon tetrahalides.It is found that in the interaction of sterically hindered phosphine with carbon tetrabromide one gets the formation of bromophosphonium tribromomethylid, which exists at a low temperature, this being in an ionic pair containing the anion CBr3-.A sterically hindered phosphine having hydrogen at the α carbon atom forms P-halogenylids on reaction with carbon tetrahalides. 2.Unstabilized P-halogenylids with unsubstituted methylene and alkylidene gr oups have been synthesized, and also P-halogenylids with trimethylsilyl, methyl sulfide, phosphine, acyl, and aromatic groups on the ylid carbon atom. 3.A study has been made of the reactions of P-chlorylids with chlorine-bearing electrophilic reagents , which give rise to new P-halogenylids.
