Steric Crowding Makes Challenging C(sp3)-F Reductive Eliminations Feasible.
Steric Crowding Makes Challenging C(sp3)-F Reductive Eliminations Feasible.
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DOI:
10.1021/om200515f
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发表时间:
2011-08-08
期刊:
影响因子:
2.8
通讯作者:
Gagné MR
中科院分区:
文献类型:
--
作者:
Zhao SB;Becker JJ;Gagné MR
A high-yielding fluorination of (triphos)Pt-R+ has been achieved using an array of F+ sources, with XeF2 yielding R–F in minutes. The C–F coupling proved to be a stereoretentive process that proceeds via a concerted reductive elimination from a putative dicationic Pt(IV) center. The larger the steric congestion of the (triphos)Pt–Csp3+ complexes, the more efficient the fluorination, seemingly a result of sterically accelerated C–F reductive elimination along with simultaneous deceleration of its competing processes (β-H elimination).
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