The synthesis of silafluorene derivativesfrom aminobiphenyl compounds and dihydrosilanes via a double sila-Friedel–Crafts reaction using a borane catalyst has been achieved. This method is applicable to the synthesis of a variety of silafluorene derivatives, such as multisubstituted silafluorenes, spirosilabifluorenes, and silicon-bridged terphenyl compounds, which are not readily obtained using conventional
In one embodiment, the application discloses ligands, such as a ligand from a dihydrobenzo[1,3] oxaphosphole scaffold, and palladium complexes comprising the ligands and methods for performing cross coupling reactions and asymmetric cross coupling reactions with high selectivity and efficiency.
Synthesis of six-membered silacycles by borane-catalyzed double sila-Friedel–Crafts reaction
We have developed a catalytic synthetic method to prepare phenoxasilins. A borane-catalyzed double sila-Friedel–Crafts reaction between amino group-containing diaryl ethers and dihydrosilanes can be used to prepare a variety of phenoxasilin derivatives in good to excellent yields. The optimized reaction conditions were also applicable for diaryl thioethers to afford their corresponding six-membered
[EN] SUBSTITUTED QUINOXALINE DERIVATIVES<br/>[FR] DÉRIVÉS DE QUINOXALINE SUBSTITUÉS
申请人:SELVITA S A
公开号:WO2016180536A1
公开(公告)日:2016-11-17
The present invention relates to substituted quinoxaline derivatives. These compounds are useful for the prevention and/or treatment of several medical conditions including hyperproliferative disorders and diseases.