36362-81-9Relevant articles and documents
Mono- and diylide-substituted phosphines (YPhos): Impact of the ligand properties on the catalytic activity in gold(i)-catalysed hydroaminations
Schwarz, Christopher,Handelmann, Jens,Baier, Daniel M.,Ouissa, Alina,Gessner, Viktoria H.
, p. 6808 - 6815 (2019)
Understanding the impact of ligand properties on their performance in catalysis is seminal for future ligand design and catalyst improvement. In this work, the influence of the steric and electronic properties on the efficiency of a series of mono- and di
Ylide-Functionalized Phosphines: Strong Donor Ligands for Homogeneous Catalysis
Scherpf, Thorsten,Schwarz, Christopher,Scharf, Lennart T.,Zur, Jana-Alina,Helbig, Andreas,Gessner, Viktoria H.
supporting information, p. 12859 - 12864 (2018/09/25)
Phosphines are important ligands in homogenous catalysis and have been crucial for many advances, such as in cross-coupling, hydrofunctionalization, or hydrogenation reactions. Herein we report the synthesis and application of a novel class of phosphines bearing ylide substituents. These phosphines are easily accessible via different synthetic routes from commercially available starting materials. Owing to the extra donation from the ylide group to the phosphorus center the ligands are unusually electron-rich and can thus function as strong electron donors. The donor capacity surpasses that of commonly used phosphines and carbenes and can easily be tuned by changing the substitution pattern at the ylidic carbon atom. The huge potential of ylide-functionalized phosphines in catalysis is demonstrated by their use in gold catalysis. Excellent performance at low catalyst loadings under mild reaction conditions is thus seen in different types of transformations.
GOLD CATALYZED HYDROAMINATION OF ALKYNES AND ALLENES
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Page/Page column 26; 30; 6/13, (2010/01/29)
Methods are provided for the catalytic hydroamination of compounds having an alkyne or allene functional group, in which the compound is contacted with ammonia or an amine in the presence of a catalytic amount of a gold complex under conditions sufficient for hydroamination to occur.