METHOD OF HYDROSILYLATION IMPLEMENTING AN ORGANIC CATALYST DERIVED FROM GERMYLENE
申请人:BLUESTAR SILICONES FRANCE SAS
公开号:US20170313729A1
公开(公告)日:2017-11-02
The present invention concerns a method for the hydrosilylation of an unsaturated compound comprising at least one ketone function, one aldehyde function, one alkene function and/or one alkyne function, with a compound comprising at least one hydrogen-silyl function implementing an organic catalyst of tri-coordinated germanium.
allowed: A stable and isolable tricoordinate silicon(II) hydride stabilized by a phosphine ligand was successfully synthesized and fully characterized (see structure, Si green, P yellow, N blue, C gray, H white). Interestingly, this silicon hydride adds to olefins in an unprecedented catalyst‐free hydrosilylation reaction in very mild conditions.
A borylidene–phosphorane, the lightestphosphoranylidene, which is stabilized by an N‐heterocyclic carbene ligand, was synthesized and fully characterized. Experimental electron density analysis and DFT calculations indicate an enhanced ylene character (rather than an ylide character) with an exceptionally strong B→P π‐back bonding related to the less electronegative boron compared to phosphorus.
Reductive Elimination at Pb(II) Center of an (Amino)plumbylene‐Substituted Phosphaketene: New Pathway for Phosphinidene Synthesis
作者:Vladislava Timofeeva、José Miguel Léon Baeza、Raphael Nougué、Mikhail Syroeshkin、Rene Segundo Rojas Guerrero、Nathalie Saffon‐Merceron、Gül Altınbaş Özpınar、Saskia Rathjen、Thomas Müller、Antoine Baceiredo、Tsuyoshi Kato
DOI:10.1002/chem.202201615
日期:2022.8.4
synthesized by the successivereactions of PbCl2 with two anionic reagents (lithium amidophosphine and NaPCO). Of particular interest, the thermal evolution of 3, at 80 °C, leads to the transient formation of corresponding amino- and phosphanylidene-phosphaketenes (6 and 7), via a reductive elimination at the PbII center forming new N-P and P-P bonds. Further evolution of 6 gives a new cyclic (amino)phosphanylidene