Tetrahedron p. 8023 - 8030 (1992)
Update date:2022-08-11
Topics:
Aitken, R. Alan
Raut, Swati V.
Ferguson, George
Two zwitterionic adduct between tri-n-butylphosphine and carbon disulphide reacts under neutral conditions with two equivalents of dimethyl- and diethyl acetylenedicarboxylate, dibenzoylacetylene and methyl benzoylpropiolate to give novel crystalline dithiole-containing phosphorus ylides.An X-ray structure, spectroscopic and chemical properties all show these to be significantly stabilised by delocalisation.
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