An Anthyridine-Based Pentanitrogen Donor Switches from Mono- to Tetradentate with Pd(II) Ions
作者:Bo-Kai Su、Yi-Hung Liu、Shie-Ming Peng、Shiuh-Tzung Liu
DOI:10.1021/acs.organomet.1c00569
日期:2021.12.27
[Pd2L(CH3CN)2Me2](BF4)2 (5), which could be prepared from complexation of L with 2 equiv of [(COD)Pd(CH3CN)Me](BF4). Thus, [trans-(PPh3)2PdLMe](BF4) (7) was obtained by the reaction of 5 with PPh3. However, the reaction of PPh3 with [Pd2L(CH3CN)2(MeCO)2](BF4)2 (6), a CO insertion product of 5, gave a messy result. The catalytic activity of these complexes in the Suzuki–Miyaura coupling of aryl halide with arylboronic
在银盐的存在下,用 (PPh 3 ) 2 PdCl 2或 (dppe)PdCl 2处理 5-苯基-2,8-双(2-吡啶基) 蒽 ( L )导致形成 [反式- ( PPh 3 ) 2 Pd L Cl](BF 4 ) ( 1a ), [ trans- (PPh 3 ) 2 Pd L (MeCN)](BF 4 ) 2 ( 1b ), [ trans- (PPh 3 ) 2 Pd L Cl ](PF 6 ) (1c ),或[顺式- (dppe)Pd L Cl](BF 4 ) ( 4 )。这些配合物中的配体L充当单齿配体,其中 N (10)的蒽啶与金属中心结合。在PPh 3存在下,双核配合物[Pd 2 L (CH 3 CN) 2 Cl 2 ](BF 4 ) 2 ( 2 ) 和[Pd 2 L (CH 3 CN) 4 ](BF 4 ) 4 ( 3 )) 容易地进行去螯合,分别产生1a , b,而2与 d