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NMR and conformations of some 5-t-butyl-2-methoxy- and 2-chloro-1,3,2-dioxaphosphorinanes

โœ Scribed by J. Howard Hargis; Wesley G. Bentrude

Publisher
Elsevier Science
Year
1968
Tongue
French
Weight
234 KB
Volume
9
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

A great deal of effort has been expended in the past decade in nmr studies of the conformation of six-membered rings (l), but six-membered-ring phosphorus heterocycles have received little attention.

RMR studies of 5,'j-disubstituted-l,J,2_dioxaphosphorinanes, Id and II (2,3), and the synthesis of isomers , presumably cis and w, -of 4-and s-substituted six-membered

๐Ÿ“œ SIMILAR VOLUMES

Direct NMR evidence of the axial prefere
Direct NMR evidence of the axial preference of the substituent on phosphorus in 2-chloro- and 2-methoxy-1,2,3-dioxaphosphorinanes.
โœ M. Haemers; R. Ottinger; J. Reisse; D. Zimmermann ๐Ÿ“‚ Article ๐Ÿ“… 1971 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 214 KB

It was shown by NMR spectmscopy that the 1,3,2-dioxaphosphorinane cycle has a chair conformation [1.2.31. In tricoordinate phosphorus derivatives, the preferred orientation for the substituent on phosphorus (-OR or halogen1 remains a subject of discussion. In fact, proofs of the preferred axiality h