Ionkin AS, Marshall WJ, Fish BM, Schiffhauer MF, McEwen CN. A stable enol in small ring systems: clear differentiation between penta- and tri-valency of phosphorus atoms.
Chem Commun (Camb) 2008:5432-4. [PMID:
18985234 DOI:
10.1039/b809877h]
[Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first stable enols in 1,2-dihydrophosphetes and were synthesized and structurally characterized with intermolecular hydrogen bonds to phosphoryl groups in 10-membered dimeric structures; in contrast, trivalent analogue exists in keto-form, where such stabilization by hydrogen bonds is not feasible.
Collapse