𝔖 Bobbio Scriptorium
✦   LIBER   ✦

1H, 13C, 31P NMR and conformational study of 7-membered ring organophosphorus compounds. 1,3,2-dioxaphosphepanes

✍ Scribed by A. C. Guimaraes; J. B. Robert; C. Taieb; J. Tabony

Publisher
John Wiley and Sons
Year
1978
Tongue
English
Weight
721 KB
Volume
11
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

The *H, '% and 31P NMR data of several Z-R-2-thiono-1,3-dioxa organophosphorus molecules with 7-membered rings [R = 43, OC6H,, C,H,, CH3, N(CH,),] are reported. The conformation of the 7-membered ring is discussed by reference to the 'J(P0CH) coupling constants which are compared with those observed in 6-membered 1,3,2-dioxaphosphorinanes. It is shown that caution must be exercised in using the 'J(POCH) angular dependence as a stereochemical tool. The 31P spin lattice relaxation times of some of these 7-membered rings have been measured and the values are discussed.

📜 SIMILAR VOLUMES

1H-, 31P- and 13C-NMR spectra of some 2-
1H-, 31P- and 13C-NMR spectra of some 2-arylsulphonylamido-2-thiono-5-methyl-1,3,2-dioxaphospholanes
✍ A. Barabás; V. Mureşan; L. Almási 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 512 KB

## Abstract Some 2‐arylsulphonylamido‐2‐thiono‐5‐methyl‐1,3,2‐dioxaphospholanes (1), containing two chiral centres, give NMR spectra in which splittings of the ^1^H and ^13^C signals of the 5‐methyl substituent and of the ^31^P signal indicate that they exist in an approximately 70:30% ratio of two

2-Dimethoxyphosphoryl-1,3-dithiane: A co
2-Dimethoxyphosphoryl-1,3-dithiane: A comparison of NMR studies for 1H, 13C and 31P nuclei by one- and two-dimensional NMR techniques
✍ Michael Engelhardt; Gerhard Hägele; Marian Mikolajczyk; Piotr Balczewski; Detlef 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 403 KB

2-Dimethoxyphosphoryl-l,3-dithiane was obtained by the reaction of 2-ddoro-1,3&thia~~e with trimethyl phosphite. Studies at 200,360 and 400 MHz using 'H, 13C and " P nuclei and lDand 2D NMR techniques are described. Long-range coupling constants were extracted by iterative treatment of [ A B ] , C D

Synthesis and 1H, 13C and 31P NMR studie
Synthesis and 1H, 13C and 31P NMR studies of 2,10-dichloro-6-aryloxy-12H-dibenzo [d,g] [1,3,2]-dioxaphosphocin 6-oxides
✍ C. Devendranath Reddy; R. S. N. Reddy; C. Naga Raju; Marwan ElMasri; K. Darrell 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 499 KB

## Abstract The spectral analyses and syntheses of several novel 2,10‐dichloro‐6‐aryloxy/alkyl‐12__H__‐dibenzo [__d__,__g__] [1,3,2] dioxaphosphocin 6‐oxides have been achieved. Long‐range coupling [^5^__J__(H,P) = 2.4 Hz] was observed between phosphorus and the bridged methylene protons. Based upo

1H and 13C NMR study of 2,3-di- carboxym
1H and 13C NMR study of 2,3-di- carboxymethyl-7-oxabicyclo[2.2.1]hepta-2,5-diene derivatives
✍ Ange Bighelli; Félix Tomi; Joseph Casanova 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 211 KB

## Abstract ^13^C and ^1^H NMR spectral assignments have been obtained for 2,3‐di‐carboxymethyl‐ 7 ‐oxabicyclo[2.2.1]hepta‐ 2,5‐diene and 19 of its derivatives. The use of a combination of one‐dimensional and two‐dimensional NMR techniques allowed the unambiguous assignments of all ^13^C resonances

Conformation and dynamic structure of po
Conformation and dynamic structure of poly(inosinic acid) in neutral aqueous solution by 1H-, 2H-, 13C-, and 31P-NMR spectroscopy
✍ J. M. Neumann; S. Tran-Dinh 📂 Article 📅 1981 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 966 KB

The conformation and dynamic stucture of single-stranded poly(inosinic acid), poly(I), in aqueous solution a t neutral pH have been investigated by nmr of four nuclei a t different, trequencies: 'H (90 and 250 MHz), 'H (13.8 MHz), '"C (75.4 MHz), and 31P (36.4 and 111.6 MHz). Measurements of the pro