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- W2017497498 abstract "The reactions of tetrabutylammonium aci-nitronates with p-dinitrobenzene in dimethyl sulfoxide, benzene or acetone proceed far more rapidly than the reactions of the corresponding lithium salts and give, in unhindered cases, good yields of C-arylates, e.g. p-(1-methyl-1-nitroethyl)nitrobenzene (in 73-89% yields) and p-nitro(l,3,3-trimethyl-1-nitrobuty1)benene (in 70% yield). With more sterically hindered nitronates, O-arylation increases, giving phenols and ketoxime O-p-nitrophenyl ethers, presumably derived from the novel, intermediate p-nitrophenyl aci-nitronate esters. aci-Nitronate ions with more than two β-methyl groups gave no C-arylation. Similar results were obtained with p-fluoronitrobenzene and p-nitrobenzonitrile, A mechanism for the conversion of the intermediate aci-nitronate esters into the ketoxime ethers is proposed." @default.
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- W2017497498 date "1979-01-01" @default.
- W2017497498 modified "2023-09-23" @default.
- W2017497498 title "Nucleophilic Substitution Reactions of Tetrabutylammoniumaci-Nitronates with p-Substituted Nitrobenzenes" @default.
- W2017497498 doi "https://doi.org/10.1071/ch9792413" @default.
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