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Ylide‐substituted phosphines (YPhos) are excellent ligands for Pd‐catalyzed cross‐coupling reactions. This work examines the impact of different ligand substituents and the use of defined precatalysts on the catalyst activity in room temperature C−N couplings. Increased selectivities and activities are obtained with the backbone‐modified joYPhos ligand which exhibits extremely high activities (TOF>10...
Palladium allyl, cinnamyl, and indenyl complexes with the ylide‐substituted phosphines Cy3P+−C−(R)PCy2 (with R=Me (L1) or Ph (L2)) and Cy3P+−C−(Me)PtBu2 (L3) were prepared and applied as defined precatalysts in C−N coupling reactions. The complexes are highly active in the amination of 4‐chlorotoluene with a series of different amines. Higher yields were observed with the precatalysts in comparison...
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