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- W2964680771 abstract "Abstract Reaction of PhMgBr with (Me3Si)HNO(SiMe3)[TMSHA] in the presence of CuI or CuCN catalysis (10–20 mol %) in THF:cosolvent (cosolvent = HMPA or TMEDA) at room temperature can provide an atom-economic and step-economic access for arylamine synthesis starting from aryl Grignard reagents. Chemoselectivity to yield C–N or C–O coupling can be controlled by changing reaction parameters. Cu(I) catalyzed reaction of PhMgBr in THF or in THF:HMPA (or TMEDA) affords both C–N and C–O coupling products, i.e. aniline and phenol (mol ratio ≥ 7:3), whereas uncatalyzed reaction of PhMgBr gives phenol. Mechanisms were proposed for the solvent dependence of chemoselectivity in the coupling of both uncatalyzed and Cu(I) catalyzed Grignard reagent with (TMS)HNO(TMS)." @default.
- W2964680771 created "2019-08-13" @default.
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- W2964680771 date "2019-10-01" @default.
- W2964680771 modified "2023-09-23" @default.
- W2964680771 title "Electrophilic amination of Cu(I) catalyzed phenylmagnesium bromide with N,O-bis(trimethylsilyl)hydroxylamine in THF:N-donor solvent. Control of C–N and C–O chemoselectivity" @default.
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- W2964680771 doi "https://doi.org/10.1016/j.jorganchem.2019.120884" @default.
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