A clear trend emerged when we explored electronic effects of the aromatic ring: higher dr values were observed for electron-withdrawing substituents (4-CF 3 , 28 ) compared to electron-rich (4-OMe, 25 ) or neutral substituents ( 22 ).
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Simultaneous Stereoinvertive and Stereoselective C(sp<sup>3</sup>)-C(sp<sup>3</sup>) Cross-Coupling of Boronic Esters and Allylic Carbonates.
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