An Examination of the Palladium/Mor-DalPhos Catalyst System in the Context of Selective Ammonia Monoarylation at Room Temperature
作者:Pamela G. Alsabeh、Rylan J. Lundgren、Robert McDonald、Carin C. C. Johansson Seechurn、Thomas J. Colacot、Mark Stradiotto
DOI:10.1002/chem.201203640
日期:2013.2.4
(Mor‐DalPhos=di(1‐adamantyl)‐2‐morpholinophenylphosphine) catalyst system in Buchwald–Hartwig aminations employing ammonia was conducted to better understand the catalyst formation process and to guide the development of precatalysts for otherwise challenging room‐temperature ammonia monoarylations. The combination of [Pd(cinnamyl)Cl}2] and Mor‐DalPhos afforded [(κ2‐P,N‐Mor‐DalPhos)Pd(η1‐cinnamyl)Cl] (2)
在使用氨的布赫瓦尔德-哈特维格胺胺化反应中,对[Pd(肉桂基)Cl} 2 ] / Mor-DalPhos(Mor-DalPhos =二(1-金刚烷基)-2-吗啉代苯基膦)催化剂体系进行了检查,以更好地理解该催化剂形成过程,并指导用于挑战室温氨单芳基化的预催化剂的开发。[的Pd(肉桂基)}氯的组合2 ]时,可以得到莫尔- DalPhos [(κ 2 - P,N -MOR-DalPhos)的Pd(η 1 -cinnamyl)CL](2),其在存在碱和氯苯,生成[(κ 2 - P,ñ -MOR-DalPhos)的Pd(PH)CL](1一)。从卤化物抽象1,得到[(κ 3 - P,N,O -MOR-DalPhos)的Pd(PH)]光学传递函数(5),带来的是由莫尔- DalPhos提供光的电位稳定的相互作用。的检查[(κ 2 - P,Ñ -MOR-DalPhos)的Pd(芳基)氯](图1b -