Molecular tweezers with freely rotating linker and porphyrin moieties
European Journal of Organic Chemistry, 2013•Wiley Online Library
Molecular tweezers were synthesised by using a microwave accelerated alkene plus
cyclobutane epoxide reaction between norbornyl appended porphyrin moieties and a
diepoxide functionalised phenyl diimide spacer. The tweezers contain several rotational
degrees of freedom; about the porphyrin with respect to the norbornyl linker, and between
the two norbornyl backbone sections. The ability of ZnII metallated tweezer 1 to complex 1, 4‐
diazabicyclo [2.2. 2] octane (DABCO) was studied by UV/Vis and 1H NMR spectroscopy and …
cyclobutane epoxide reaction between norbornyl appended porphyrin moieties and a
diepoxide functionalised phenyl diimide spacer. The tweezers contain several rotational
degrees of freedom; about the porphyrin with respect to the norbornyl linker, and between
the two norbornyl backbone sections. The ability of ZnII metallated tweezer 1 to complex 1, 4‐
diazabicyclo [2.2. 2] octane (DABCO) was studied by UV/Vis and 1H NMR spectroscopy and …
Abstract
Molecular tweezers were synthesised by using a microwave accelerated alkene plus cyclobutane epoxide reaction between norbornyl appended porphyrin moieties and a diepoxide functionalised phenyl diimide spacer. The tweezers contain several rotational degrees of freedom; about the porphyrin with respect to the norbornyl linker, and between the two norbornyl backbone sections. The ability of ZnII metallated tweezer 1 to complex 1,4‐diazabicyclo[2.2.2]octane (DABCO) was studied by UV/Vis and 1H NMR spectroscopy and multivariate global spectral analysis. The system was found to form a strong 1:1 intramolecular complex (1:DABCO) with an association constant of K11 = 8.1 × 107 M–1, transforming to a 1:2 open complex [1:(DABCO)2] with K12 = 2.7 × 109 M–2 at high concentrations of DABCO.
Wiley Online Library以上显示的是最相近的搜索结果。 查看全部搜索结果