1, 3-Dipolar Cycloaddition Reaction of Nitrones with Methyl cis- and trans-Cinnamates and p-Substituted Chalcones
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چکیده
منابع مشابه
A homo [3+2] dipolar cycloaddition: the reaction of nitrones with cyclopropanes.
Cycloadditions are among the most trusted of chemical transformations available to the synthetic chemist. The predictability of the transition state based on steric and electronic considerations allows for the strategic construction of complex molecular assemblies. While the Diels–Alder reaction has received the most attention, 1,3-dipolar cycloadditions have also maintained a place of prominen...
متن کامل1,3-dipolar cycloaddition reactions of N-methyl-substituted tricyclic imides.
The [3+2] cycloadditions of N-methyl derivatives of unsaturated imides with various nitrile oxides to yield new bridged isoxazoline derivatives with potential biological activity is described.
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متن کاملREACTION OF 4-METHYL- 1 2,4-TRIAZOLINE- 3,5-DIONE WITH DI AND TRI-SUBSTITUTED STYRENES S.E. Mallakpour* and G.B. Butler**
2,4,6-Triisopropylstryrene was synthesized in a single step via the Witting Reaction from the corresponding aldehyde. The reaction of three styrene's derivatives, 2,6-dimethylstyrene, 2,4,6-trimethylstyrene, and 2,4,6- triisopropylstyrene with 4-methyl-l,2,4-triazoline-3,5-dion(M eTD) was investigated. These reactions are instantaneous at room temperature and lead to the formation of 2: 1 ...
متن کاملA molecular electron density theory study of the [3 + 2] cycloaddition reaction of nitrones with ketenes.
The [3 + 2] cycloaddition (32CA) reaction between nitrones and ketenes has been studied within the Molecular Electron Density Theory (MEDT) at the Density Functional Theory (DFT) MPWB1K/6-311G(d,p) computational level. Analysis of the conceptual DFT reactivity indices allows the explanation of the reactivity, and the chemo- and regioselectivity experimentally observed. The particular mechanism ...
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ژورنال
عنوان ژورنال: NIPPON KAGAKU KAISHI
سال: 1972
ISSN: 2185-0925,0369-4577
DOI: 10.1246/nikkashi.1972.1448