Substituent effects in 13C NMR spectra of 6-endo substituted 9-thiabicyclo[3.3.1]non-2-enes
作者:J.W. de Hann、L.J.M. van de Ven、H. Vlems、M.M.E. Schefers-Sap、H. Gillissen、H.M. Buck
DOI:10.1016/s0040-4020(01)93698-1
日期:1980.1
For the compounds with X = H and X = Cl our assignments differ from those published previously and hence result in different values of the substituent-induced chemical shifts (SIS-values) in the 9-thiabicyclo[3.3.1] non-2-ene skeleton.
已经合成了许多新的6-内基-X-9-硫代双环[3.3.1]非-2-烯(X =氰基,羧甲基-甲氧基,羧甲氧基,羧酸,氨基甲基,甲苯磺酰基甲基和甲基)。测量了其中六个化合物的13 C NMR光谱以及X =氯,羟基,氢和氘的几种已知类似物的13 C NMR光谱。借助异质(13 C- 1 H)和均质(1 H- 1 H)核解耦技术进行分配。对于X = H和X = Cl的化合物,我们的赋值与之前公布的结果不同,因此在9-噻双环[3.3.1]非-2-原子上产生的取代基诱导的化学位移(SIS值)的值不同。烯骨架。
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