Catalytic Enantioselective Synthesis of
<i>anti</i>
‐Vicinal Silylboronates by Conjunctive Cross‐Coupling
作者:Yan Meng、Ziyin Kong、James P. Morken
DOI:10.1002/anie.202000937
日期:2020.5.25
1,2-bimetallic reagents are useful motifs in synthetic chemistry. Although syn-1,2-bimetallic compounds can be prepared by alkene dimetallation, anti-1,2-bimetallics are still rare. The stereospecific 1,2-metallate shift that occurs during conjunctive cross-coupling is shown to enable a practical and modular approach to the catalytic synthesis of enantioenriched anti-1,2-borosilanes. In addition to
Selective CH Borylation of Alkenes by Palladium Pincer Complex Catalyzed Oxidative Functionalization
作者:Nicklas Selander、Benjamin Willy、Kálmán J. Szabó
DOI:10.1002/anie.201000690
日期:2010.6.1
The CHborylation of simple alkenes catalyzed by palladium pincer complex 1 was performed in the presence of hypervalent iodine and bis(pinacolato)diboron compounds. The borylation reaction probably occurs by a PdII→PdIV oxidation–diboronate transmetalation sequence. TFA=trifluoroacetate.
与c ħ硼化由钯钳形络合物催化简单烯烃的1在高价碘和双(频哪醇合)二硼化合物的存在下进行。硼酸化反应可能是由Pd II →Pd IV氧化-二硼酸盐的重金属化序列发生的。TFA =三氟乙酸盐。