EVIDENCE IN SUPPORT OF TETRAOXASPIROPHOSPHORANE INTERMEDIATES WITH A SIX-MEMBERED RING AND AP [sbnd] H BOND IN INTRAMOLECULAR …

JJC Van Lier, RJM Hermans…

文献索引：Lier, Johan J. C. Van; Hermans, Rob J. M.; Buck, Henk M. Phosphorus and Sulfur and the Related Elements, 1984 , vol. 19, p. 173 - 188

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被引用次数: 7

摘要

Abstract Preparation of tetraoxaspirophosphorane 5 via two possible routes, starting from the isomeric P (V) precursors 10 and 11 results in identical 31P NMR spectra indicative of various P (III) compounds. By analysis of the products and application of low-temperature 31P NMR techniques it is shown that the phosphorane 5 is involved as an intermediate in the intramolecular transesterification 10⇄ 11. Closure of the six-membered ring in 11 ...