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- W2316372813 endingPage "4007" @default.
- W2316372813 startingPage "3997" @default.
- W2316372813 abstract "A novel sp2–sp3 diboron reagent has been developed for the copper-catalyzed β-boration of α,β-unsaturated conjugated compounds. The reaction proceeds under mild conditions with various substrates, i.e., α,β-unsaturated esters, ketones, nitriles, ynones, amides, and aldehydes, in the absence of additives such as phosphine and sodium tert-butoxide to provide β-borylhomoenolates in good to excellent yields. The presence of an sp3-hybridized boron center, unambigously confirmed by X-ray crystallography, sufficiently activates the unsymmetrical pinacolato diisopropanolaminato diboron (PDIPA diboron, 2) to transfer the sp2-hybridized boron moiety chemoselectively. These observations suggest that the activation of one of the boron atoms is an essential step in the Cu-catalyzed β-boration catalytic cycle." @default.
- W2316372813 created "2016-06-24" @default.
- W2316372813 creator A5031741553 @default.
- W2316372813 creator A5033699090 @default.
- W2316372813 creator A5033993046 @default.
- W2316372813 creator A5067452976 @default.
- W2316372813 creator A5073802826 @default.
- W2316372813 creator A5090327801 @default.
- W2316372813 date "2011-04-28" @default.
- W2316372813 modified "2023-10-07" @default.
- W2316372813 title "Structure and Reactivity of a Preactivated sp<sup>2</sup>–sp<sup>3</sup> Diboron Reagent: Catalytic Regioselective Boration of α,β-Unsaturated Conjugated Compounds" @default.
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