ISSN:
0749-1581
Keywords:
1H, 13C and 31P NMR shifts
;
2,10-Dichloro-6-aryloxy-12H-dibenzo[d,g][1,3,2]dioxaphosphocin 6-oxides
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The spectral analyses and syntheses of several novel 2,10-dichloro-6-aryloxy/alkyl-12H-dibenzo [d,g] [1,3,2] dioxaphosphocin 6-oxides have been achieved. Long-range coupling [5J(H,P) = 2.4 Hz] was observed between phosphorus and the bridged methylene protons. Based upon NMR data, a tub-like conformation is proposed for the central eight-membered dioxaphosphocin ring. Long-range 2J(P,O,C) and 3J(P,O,C,C) couplins were determined, as were the 31P chemical shifts for sixteen members of these new heterocycles. A variable-temperature study of one member suggested the presence of a tub form as a reasonable candidate for one major conformer but the presence of other forms was also implied.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260291111
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