DIALKYL(2-ALKOXY-6-AMINOPHENYL)PHOSPHINE, THE PREPARATION METHOD AND USE THEREOF
申请人:Ma Shengming
公开号:US20140309422A1
公开(公告)日:2014-10-16
The present invention relates to the compound of dialkyl(2-alkoxy-6-aminophenyl)phosphine and the preparation method thereof and the application in the palladium catalyzed coupling reactions of aryl chloride and ketone. The dialkyl(2-alkoxy-6-aminophenyl)phosphine of the present invention could coordinate with the palladium catalyst to highly selectively activate the inert carbon-chlorine bond, and to catalyze direct arylation reaction in the α-position of ketones to produce corresponding coupling compounds. The preparation method of the present invention is a simple one-step method which produces the air-stable dialkyl(2-alkoxy-6-aminophenyl)phosphine. Compared with the synthetic routes of ligands to be used in the activation of carbon-chlorine bonds in the prior arts, the preparation method of the present invention has the advantages of short route and easy operation.
Alkoxide Activation of Aminoboranes towards Selective Amination
作者:Cristina Solé、Elena Fernández
DOI:10.1002/anie.201305098
日期:2013.10.18
the (inter)action: The interaction of alkoxides with the sp2 Bpin (pin=pinacol) moiety in aminoboranes forms the in situ Lewis acid–base adduct [RO−→B(OR)2N(R′)2] which enables the amino moiety to react as a strong nucleophile with several electrophiles, thus providing amino alcohols, β‐enamino esters, and β‐hydroxy amides in a direct and remarkably selective way (see scheme).
The stereochemical course of the reactionbetween organo-metals and β-asymmetric amino-ketones has been investigated by varying the nature of the reagent and the substituents in the substrate, as well as the distance of the amino-group from the reaction center.