Me3(OMe)tBuXPhos: A Surrogate Ligand for Me4tBuXPhos in Palladium-Catalyzed C–N and C–O Bond-Forming Reactions
摘要:
A new biarylphosphine ligand, Me-3(OMe)tBuXPhos (L3), was designed as a surrogate for Me(4)tBuXPhos (L1). The Me-3(OMe)tBuXPhos could be prepared in a chromatography-free manner from inexpensive and readily available 2,3,6-trimethylphenol. Comparative studies demonstrated that a catalyst based on Me-3(OMe)tBuXPhos displayed the same reactivity as a catalyst based on Me(4)tBuXPhos for Pd-catalyzed C-N and C-O bond-forming processes.
Me<sub>3</sub>(OMe)<i>t</i>BuXPhos: A Surrogate Ligand for Me<sub>4</sub><i>t</i>BuXPhos in Palladium-Catalyzed C–N and C–O Bond-Forming Reactions
作者:Satoshi Ueda、Siraj Ali、Brett P. Fors、Stephen L. Buchwald
DOI:10.1021/jo202537e
日期:2012.3.2
A new biarylphosphine ligand, Me-3(OMe)tBuXPhos (L3), was designed as a surrogate for Me(4)tBuXPhos (L1). The Me-3(OMe)tBuXPhos could be prepared in a chromatography-free manner from inexpensive and readily available 2,3,6-trimethylphenol. Comparative studies demonstrated that a catalyst based on Me-3(OMe)tBuXPhos displayed the same reactivity as a catalyst based on Me(4)tBuXPhos for Pd-catalyzed C-N and C-O bond-forming processes.