Palladium‐Catalyzed Divergent Cyclopropanation by Regioselective Solvent‐Driven C(sp
<sup>3</sup>
)−H Bond Activation
作者:Da Sol Chung、Jae Sung Lee、Ho Ryu、Jiyong Park、Hyunjoong Kim、Joo Hyun Lee、U Bin Kim、Won Koo Lee、Mu‐Hyun Baik、Sang‐gi Lee
DOI:10.1002/anie.201809133
日期:2018.11.19
Reported is a tandempalladium‐catalyzed Heck/regioselective C(sp3)−H activation reaction for the divergent synthesis of spiro‐ and fused‐cyclopropanated indolines from N‐methallylated 2‐bromoarylamides. The regioselectivity of the C−H bond activation in the σ‐alkylPdII intermediate is controlled by the solvent used. DFT calculations suggest that the polarity of solvent molecules could influence the