A stable enol in small ring systems: clear differentiation between penta- and tri-valency of phosphorus atoms

Literature Information

Publication Date 2008-09-22
DOI 10.1039/B809877H
Impact Factor 6.222
Authors

Alex S. Ionkin, William J. Marshall, Brian M. Fish, Matthew F. Schiffhauer, Charles N. McEwen


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Abstract

The first stable enols in 1,2-dihydrophosphetes 6 and 10 were synthesized and structurally characterized with intermolecular hydrogen bonds to phosphoryl groups in 10-membered dimeric structures; in contrast, trivalent analogue 9 exists in keto-form, where such stabilization by hydrogen bonds is not feasible.

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