TY  - JOUR
A1  - Scherpf, Thorsten
A1  - Schwarz, Christopher
A1  - Scharf, Lennart T.
A1  - Zur, Jana-Alina
A1  - Helbig, Andeas
A1  - Gessner, Viktoria H.
T1  - Ylide-Functionalized Phosphines: Strong Donor Ligands for Homogeneous Catalysis
JF  - Angewandte Chemie - International Edition
N2  - 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.
KW  - carbanion
KW  - homogeneous catalysis
KW  - phosphine ligands
KW  - structure elucidation
KW  - ylides
Y1  - 2018
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-228551
VL  - 57
IS  - 39
ER  -