BIS(6-METHYL-3-SULPHOPHENYL)PHENYLPHOSPHINE, AMMONIUM SALT THEREOF, AND METHOD FOR PRODUCING SAME
申请人:HOKKO CHEMICAL INDUSTRY CO., LTD.
公开号:US20160052947A1
公开(公告)日:2016-02-25
Provided are a water-soluble triarylphosphine for a palladium catalyst, which has high selectivity in a telomerization reaction and can be recovered with efficiency, an ammonium salt thereof, and a method for efficiently producing the same. Specifically, provided are bis(6-methyl-3-sulphophenyl)phenylphosphine; a bis(6-methyl-3-sulphonatophenyl)phenylphosphine diammonium salt obtained by reacting the phosphine with a tertiary amine having a total of 3 to 27 carbon atoms in groups bonded to one nitrogen atom; and a method for producing the same.
PROCESS FOR PREPARING SECONDARY AMIDES BY CARBONYLATION OF A CORRESPONDING TERTIARY AMINE
申请人:SRASRA Mondher
公开号:US20100130785A1
公开(公告)日:2010-05-27
The present invention relates to a process for preparing secondary amides with good selectivity by carbonylating a corresponding tertiary amine with carbon monoxide in a reaction mixture in the presence of a metal catalyst and in the presence of a halogen containing promoter. The metal catalyst comprises palladium. A same or even a much better catalytic activity can be obtained with palladium than with the much more expensive rhodium, especially when the palladium is used in a low concentration. Moreover, also a good selectivity can be achieved.
Fast continuous alcohol amination employing a hydrogen borrowing protocol
作者:Ricardo Labes、Carlos Mateos、Claudio Battilocchio、Yiding Chen、Paul Dingwall、Graham R. Cumming、Juan A. Rincón、Maria José Nieves-Remacha、Steven V. Ley
DOI:10.1039/c8gc03328e
日期:——
A continuous flow method for the direct conversion of alcohols to amines via a hydrogen borrowing approach is reported. The method utilises a low loading (0.5%) of a commercial catalyst system ([Ru(p-cymene)Cl2]2 and DPEPhos), reagent grade solvent and is selective for primary alcohols. Successful methylation of amines using methanol and the direct dimethylamination of alcohols using commercial dimethylamine
Put a label on it: Carbondioxide with H2 is shown to be an efficient and selectivemethylation reagent for aromatic and aliphatic amines (see scheme; acac=acetylacetonate, triphos = 1,1,1‐tris(diphenylphosphanylmethyl)ethane). A variety of functionalized amines including 13C‐labelled drugs were obtained with good yields and functional‐group tolerance.