标题:Preparation of hydrido [CNC]-pincer cobalt complexes via selective C-H/C-F bond activation and their catalytic performances
作者:Yang, Fei; Wang, Yangyang; Lu, Faguan; Xie, Shangqing; Qi, Xinghao; Sun, Hongjian; Li, Xiaoyan; Fuhr, Olaf; Fenske, Dieter
作者机构:[Yang, Fei; Wang, Yangyang; Lu, Faguan; Xie, Shangqing; Qi, Xinghao; Sun, Hongjian; Li, Xiaoyan] Shandong Univ, Minist Educ, Key Lab Special Funct Agg 更多
通讯作者:Li, XY
通讯作者地址:[Li, XY]Shandong Univ, Minist Educ, Key Lab Special Funct Aggregated Mat, Sch Chem & Chem Engn, Shanda Nanlu 27, Jinan 250100, Shandong, Peoples R Chi 更多
来源:NEW JOURNAL OF CHEMISTRY
出版年:2018
卷:42
期:19
页码:15578-15586
DOI:10.1039/c8nj02979b
摘要:Polyfluorinated aryl imines 2,4,5-R-1,R-2,R-3-C6H2-HC=N-1-C10H7 (R-1 = F, R-2 = F, R-3 = H (1); R-1 = F, R-2 = H, R-3 = F (2) and R-1 = F, R-2 = F, R-3 = F (3)) and F5C6-HC=N-1-C10H7 (7) reacted with CoMe(PMe3)(4) to give rise to hydrido [CNC]-pincer cobalt(iii) complexes (2,4,5-R-1,R-2,R-3-C6H-HC=N-1-C10H6)Co(H)(PMe3)(2) (R-1 = F, R-2 = F, R-3 = H (4); R-1 = F, R-2 = H, R-3 = F (5); R-1 = F, R-2 = F, R-3 = F (6)) and (F4C6-HC=N-1-C10H6)Co(H)(PMe3)(2) (8) via selective C-F/C-H bond activation. Penta-coordinate dicarbonyl cobalt(i) complexes (2,4,5-R-1,R-2,R-3-C6H-HC=N-1-C10H7)Co(CO)(2)(PMe3) (R-1 = F, R-2 = H, R-3 = F (9); R-1 = F, R-2 = F, R-3 = F (10)) were obtained from reactions of hexa-coordinate cobalt(iii) complexes 5 and 6 with carbon monoxide through reductive elimination. Cobalt(iii) halides (2,4,5-R-1,R-2,R-3-C6H-HC=N-1-C10H6)Co(i)(PMe3)(2) (R-1 = F, R-2 = F, R-3 = H (11); R-1 = F, R-2 = H, R-3 = F (12); R-1 = F, R-2 = F, R-3 = F (13)) and (2,4,5-R-1,R-2,R-3-C6H-HC = N-1-C10H6)Co(Br)(PMe3)(2) (R-1 = F, R-2 = F, R-3 = H (14); R-1 = F, R-2 = H, R-3 = F (15); R-1 = F, R-2 = F, R-3 = F (16)) were prepared by the interaction between hydrido cobalt(iii) complexes 4-6 and MeI or EtBr. The molecular configurations of complexes 4, 8, and 11 were determined by single crystal X-ray diffraction. We then confirmed that the four hydrido cobalt(iii) complexes 4-6 and 8 could be used as catalysts for reduction of aldehydes and ketones. Complex 8 is the best catalyst among the four complexes and can selectively catalyze the carbonyl groups of alpha,beta-unsaturated aldehydes and ketones.
收录类别:SCOPUS;SCIE
Scopus被引频次:1
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054041123&doi=10.1039%2fC8NJ02979B&partnerID=40&md5=45e770bb9ff060cead2efab261596553
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