Synthesis and conformational analysis of exo-and endo-7-substituted-3-azabicyclo[3.3.1]nonanes
作者:T.H.Reints Bok、W.N. Speckamp
DOI:10.1016/s0040-4020(01)99493-1
日期:1979.1
The synthesis of some 7-substituted-3-azabicyclo[3.3.1]nonanes is described. Routes followed were the debenzoylation of the 7-benzoyl derivative 7 and the decarboxylation of the 7-carboxy compounds 21 and 27. The so-obtained 7-oxo-N-tosyl-3-azabicyclo[3.3.1]nonanes 8and 11 show an extremely low reactivity towards a series of nucleophilic reagents. From analysis of the 1H NMR spectral data of a series
描述了一些7-取代的3-氮杂双环[3.3.1]壬烷的合成。遵循的途径是7-苯甲酰基衍生物7的脱苯甲酰化和7-羧基化合物21和27的脱羧。如此获得的7-氧代-N-甲苯磺酰基-3-氮杂双环[3.3.1]壬烷8和11对一系列亲核试剂显示出极低的反应性。通过分析一系列衍生物的1 H NMR光谱数据,可以看出7- exo化合物的双链构象和7- endo化合物的椅形构象。