Hutchins, Robert O. published the artcileConformational analysis of phosphorus heterocycles. Proton and phosphorus-31 nuclear magnetic resonance study of N,N’-dimethyl-(2R)-2-phospha-1,3-diazacyclohexanes, Safety of (1-Methylpiperidin-3-yl)methanamine, the publication is Journal of the American Chemical Society (1972), 94(26), 9151-8, database is CAplus.
An examination of a series of N,N’-dimethyl-(2R)-2-phospha- and N,N’-5,5-tetramethyl-(2R)-2-phospha-1,3-diazacyclohexanes (R = Cl, OMe, Et, Me, Ph) by H and 31P NMR spectra reveals predominantly single chair conformations, probably with diequatorial N-methyl groups. The P-N-C-H coupling constants are quite variant with the P substituent and suggest that the N hybridization, and consequently the flattening of the rings, is very dependent upon the electronegativity of the P substituent. The stereochemistry of the P substituents is discussed.
Journal of the American Chemical Society published new progress about 14613-37-7. 14613-37-7 belongs to piperidines, auxiliary class Piperidine,Amine, name is (1-Methylpiperidin-3-yl)methanamine, and the molecular formula is C7H16N2, Safety of (1-Methylpiperidin-3-yl)methanamine.
Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem