The axial/equatorial preference of the diphenylphosphino group bonded to the phosphorus of a 2-oxo-1,3,2-dioxaphosphorinanyl ring
✍ Scribed by Andrzej Okruszek; Wojciech J. Stec; Robin K. Harris
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 210 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Proton, ^13^C and ^31^P n.m.r. spectra of the diastereoisomeric 2‐diphenylphosphino‐2‐oxo‐4‐methyl‐1,3,2‐dioxaphosphorinans indicate that the diphenylphosphino group is essentially axial for the trans isomer, whereas it is predominantly equatorial in the case of the cis isomer.
📜 SIMILAR VOLUMES
The conformations of a series of 5,5-dimethyl-Z-Z-1,3f2-oxazaphosphorinanes (Z = MeO, (CF,),CHO, Ph, MeaN, and I-Pr N) have been investigated by H NMR spectroscopy and by X-ray crystallography. Surprising y, T Me,N displays a strong preference for axial attachment to the ring; and 1-Pr,N also is axi
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
## Abstract A tris(imino)phosphane (3), its sulfide [3(S)], an iminodiphenylphosphane (4), and an iminotrimethylsilane (5), in all of which the imino group belongs to a __pseudo__‐ephedrine‐derived 2‐imino‐1,3‐selenazolidine ring, were prepared and studied by multinuclear magnetic resonance (^1^H,