Аннотация:
The review observes the published literature data concerning preparative procedures and reactivity of 1-oxa-2-phosphol-3-enium salts as a part of useful 3-step method for ketone derivatization (ketone(aldehyde)→propargylic alcohol→P-bearing allene→P-heterocycle via 1-oxa-2-phosphol-3-enium intermediate). The salts were prepared by the reaction of phosphorus-containing allenes with protic acids, Hal2, and X-Hal. The stability and fruitful reactions of the salts discussed with the support of DFT-calculations. Keywords: phosphorus • heterocycles • DFT • allenes • 1-oxa-2-phosphol-3-enium
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