We report a cooperative catalytic system comprising a PdII complex, XPhos, and the potassium salt of 5‐norbornene‐2‐carboxylic acid that enables the use of epoxides as alkylating reagents in the Catellani reaction, thereby expanding the existing paradigm of this powerful transformation. The potassium salt of inexpensive 5‐norbornene‐2‐carboxylic acid acts as both mediator and base in the process. This
Palladium/norbornene catalysis: a versatile aryl C–H hydroxyalkylation, alkyl cinnamate formation
作者:Farnaz Jafarpour、Nafiseh Jalalimanesh
DOI:10.1016/j.tet.2012.10.013
日期:2012.12
palladium/norbornene catalyzed domino direct alkylation/alkenylation of iodoarenes provides a new strategy for construction of biologically interesting ortho-hydroxyalkyl cinnamic acid alkyl esters. This protocol is compatible with a vide variety of electron-donating and -withdrawing substituents and allows one-pot construction of highly functionalized primary alcohols in high yields.