Monatshefte fur Chemie p. 219 - 225 (1996)
Update date:2022-08-11
Topics:
Mazurkiewicz
Pierwocha
4-Phosphoranylidene-5(4H)-oxazolones (2), a hardly known class of phosphorus ylides, were readily prepared from 4-unsubstituted-5-(4H)-oxazolones (1) by treatment with Ph3P-Br2, Bu3P-Br2, Ph3P-CCl4, or Ph3P-CBr4 adducts in the presence of triethylamine in CH2Cl2 at room temperature in a novel, efficient one-pot procedure. The spectroscopic properties of the ylides are reported and discussed.
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