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选择N-烯丙基-2-氨基吡啶(NPAP+)作为底物,利用荧光光谱、1H NMR技术等方法考察了七、八元瓜环与NPAP+的相互作用,并探讨了七、八元瓜环对NPAP+发生光致环加成的反应位点、产物的立体选择性,以及动力学性质.结果表明七、八元瓜环与NPAP+可形成1∶1的配合物,并对NPAP+发生光致环加成反应产物的结构有选择性催化作用.
The interaction between NPAP + and seven or eight membered rings was investigated by fluorescence spectroscopy, 1H NMR and other methods with N-allyl-2-aminopyridine (NPAP +) as the substrate. The reaction site of the photocyclic addition to NPAP +, the stereoselectivity of the product, and the kinetic properties were studied. The results showed that the seven- and eight-membered guaiacin ring could form a 1: 1 complex with NPAP + The structure of the addition reaction product has a selective catalytic effect.