1. Tetrahedron Lett. - 1968. - Vol.9. - No.10. - P.1153-1157.
M.J.T. Robinson
NMR chemical shifts as criteria of the conformation of the nitrogen atom in piperidines.
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dx.doi.org/10.1016/S0040-4039(01)98910-5L.M. Jackman, T.S. Dunne, J.L. Roberts, B. Mller, H. Quast.
Cooperative effects in restricted rotations of aryl groups in 2,4,6,8-tetraary-3,7-diazabicyclo[3.3.1]nonanes and related systems
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dx.doi.org/10.1016/0022-2860(85)80132-0N.S. Zefirov, S.V. Rogozina
Stereochemical studies—XVIII : Conformational study of heteroanalogues of bicyclo[3.3.1]nonane
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dx.doi.org/10.1016/S0040-4020(01)97102-9J. Spieler, O. Huttenloch, H. Waldmann.
Synthesis of Chiral Amino Alcohols Embodying the Bispidine Framework and Their Application as Ligands in Enantioselectively Catalyzed Additions to C=O and C=C Groups.
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dx.doi.org/10.1002/(SICI)1099-0690(200002)2000:3<391::AID-EJOC391>3.0.CO;2-R