The conformational dependence of 15n13c spin spin coupling constants

2-Azabicyclo(2.2.2)octan-3-One 1, N-isopropylpivaloylamide 2 and 4-azatricyclo(4.3.1.1^3,8)undecan-5-one 3 have been prepared with a ¹⁵N label. The amides were reduced to the corresponding amines 2-azabicy-clo(2.2.2)octane 4, N-isopropyl-N-neopentylamine 5 and 4-azatricyclo(4.3.1.1^3,8)undecane 6. The ¹³C spectra of these compounds and their hydrochlorides were measured and the ¹⁵N¹³C spin coupling constants interpreted in terms of their conformational dependence.