Synthesis of Polyfunctionalized Triaryllanthanum Reagents by Using Ph<sub>3</sub>
La and Related Species as Exchange Reagents
作者:Andreas D. Benischke、Lucile Anthore-Dalion、Fabien Kohl、Paul Knochel
DOI:10.1002/chem.201801527
日期:2018.8.1
Ph3La⋅5 LiCl and the related (m‐xylyl)3La⋅5 LiCl were used as Hal/La exchange reagents (Hal=Br, I) for the preparation of various triaryl‐ and triheteroaryl‐lanthanum derivatives. These new exchange reagents are compatible with isoquinolines and some functional groups such as a nitrile or an ester. The reactivity of the resulting lanthanum compounds towards electrophiles, such as ketones, aldehydes
pH值3的La ⋅ 5 LiCl和相关的(米-二甲苯)3的La ⋅ 5的LiCl用作哈尔/ LA交换试剂(HAL = Br的,I)关于各种三芳基和triheteroaryl镧衍生物的制备。这些新的交换试剂与异喹啉和某些官能团(例如腈或酯)兼容。研究了所得镧化合物对亲电子试剂(如酮,醛,N,N-二甲基酰胺和伯烷基卤化物)的反应性。此外,还开发了Pd催化与芳基溴化物的交叉偶联程序。