An unusual twist-boat conformation for a six-membered ring phosphorus heterocycle

DG Gorenstein, R Rowell

文献索引：Gorenstein,D.G.; Rowell,R. Journal of the American Chemical Society, 1979 ,  vol. 101,  # 17  p. 4925 - 4928            

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被引用次数: 54

摘要

Abstract: Configurational and conformational analysis of isomeric 2-p-nitrophenoxy-2-oxo- 1.3, 2-dioxaphosphorinane (1) and isomeric 2-p-nitrophenoxy-2-oxo-l, 3, 2- oxazaphosphorinane (2) is presented. Based upon'H NMR coupling data and 31P NMR spectra the axial and equatorial p-nitrophenoxy isomers of 1 are both in chair conformations as is the axial isomer of 2. However, NMR data support the assignment of a twist-boat ...