Silica‐Supported Tripod Triarylphosphane: Application to Transition Metal‐Catalyzed C(
<i>sp</i>
<sup>3</sup>
)H Borylations
作者:Tomohiro Iwai、Ryo Murakami、Tomoya Harada、Soichiro Kawamorita、Masaya Sawamura
DOI:10.1002/adsc.201301147
日期:2014.5.5
A silica‐supported tripod triarylphosphane (Silica‐3p‐TPP), containing a triphenylphosphane‐type core tripodally immobilized on the silica surface, allows rhodium‐ and iridium‐catalyzed C(sp3)H borylations of amide, urea and alkylpyridine derivatives. The 31P CP/MAS NMR studies for the coordination behavior of the tripod phosphane towards a rhodium complex indicate efficient site isolation of the
的二氧化硅负载的三脚架triarylphosphane(二氧化硅-3P-TPP),含tripodally固定在二氧化硅表面上的三苯基膦型铁芯,使得铑和铱催化的C(SP 3) ħ酰胺,脲和烷基吡啶衍生物的borylations。对三脚架膦对铑配合物的配位行为的31 P CP / MAS NMR研究表明,每个膦烷中心都有效地被隔离,从而允许与金属中心进行独立的单P配位。