PALLADIUM-CATALYZED DECARBONYLATION OF FATTY ACID ANHYDRIDES FOR THE PRODUCTION OF LINEAR ALPHA OLEFINS
申请人:CALIFORNIA INSTITUTE OF TECHNOLOGY
公开号:US20140155666A1
公开(公告)日:2014-06-05
The present invention is directed to methods of forming olefins, especially linear alpha olefins from fatty acids or anhydrides, each method comprising: contacting an amount of precursor carboxylic acid anhydride with a palladium catalyst comprising a bidentate bis-phosphine ligand in a reaction mixture so as to form an olefin in a product with the concomittant formation and removal of CO and water from the reaction mixture, either directly or indirectly, wherein the reaction mixture is maintained with a sub-stoichiometric excess of a sacrificial carboxylic acid anhydride, an organic acid, or both, said sub-stoichiometric excess being relative to the amount of the precursor carboxylic acid anhydride. The precursor carboxylic acid anhydride may be added to the reaction mixture directly or formed in situ by the reaction between at least one precursor carboxylic acid with a stoichiometric amount of the sacrificial acid anhydride.
本发明涉及从脂肪酸或酸酐中形成烯烃的方法,特别是线性α-烯烃的方法,每种方法包括:将一定量的前体羧酸酐与含有双配位双膦配体的钯催化剂在反应混合物中接触,从而形成产物中的烯烃,并伴随着从反应混合物中直接或间接形成和去除CO和水,其中反应混合物保持有亚化学计量的献祭羧酸酐、有机酸或两者的过量,所述亚化学计量的过量相对于前体羧酸酐的量。前体羧酸酐可以直接加入反应混合物中,也可以由至少一种前体羧酸与化学计量的献祭酸酐之间的反应在原位形成。