HEWSON M. J. C.; SCHMUTZLER R., PHOSPH. AND SULFUR, 1980, 8, NO 1, 9-26
作者:HEWSON M. J. C.、 SCHMUTZLER R.
DOI:——
日期:——
Hewson, Michael J. C.; Schmutzler, Reinhard, Phosphorus and Sulfur and the Related Elements, 1980, vol. 8, p. 9 - 26
作者:Hewson, Michael J. C.、Schmutzler, Reinhard
DOI:——
日期:——
15N nuclear magnetic resonance studies of azabicycles; unusual deshielding of nitrogen in the 7-azabicyclo[2.2.1]heptyl ring system
作者:Djballah Belkacemi、John W Davies、John R Malpass、Antoinette Naylor (née Bathgate)、Craig R Smith
DOI:10.1016/s0040-4020(01)89045-1
日期:——
samples of derivatives of the 7-azabicyclo[2.2.1]heptyl system were synthesised and 15N NMR spectra were recorded using 15N-enriched and natural abundance samples; separate signals were observed for the two invertomers in N-methyl and N-chloro derivatives. Considerable deshielding was observed in comparison with simple amines and with 8-azabicyclo[3.2.1]octyl and 9-azabicyclo[4.2.1]nonyl analogues.