Synthesis and study of an unprecedented 1-hydro-1-lithio-1-silafluorene anion.
The 1-hydro-1-lithio-silafluorene anion 2 has been isolated and characterized by single-crystal X-ray analysis for the first time. Three tetrahydrofuran molecules coordinate with lithium atoms in the crystal structure of 2. 2 was reacted with a number of electrophilic reagents and it can be used as a useful reagent for generating various functional hydrogen-substituted silafluorenes. Treatment of 2 with 2 equiv. of chlorobis(isopropyl)phosphine afforded chloro-substituted silafluorene 4. The reaction of 8 which has a SiH-SiBr fragment with IiPr2Me2(IiPr2: 2,5-diisopropyl-3,4-dimethylimidazol-1-ylidene) led to the formation of an Si-Si bond cleavage product, NHC-stabilized silacyclopentadienylidene 9.
College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, 393 Binshui West Road, Tianjin 300387, China. hxxytdw@mail.tjnu.edu.cn.
Dawei
D
Tian
College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, 393 Binshui West Road, Tianjin 300387, China. hxxytdw@mail.tjnu.edu.cn.
Xiaofei
X
Li
College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, 393 Binshui West Road, Tianjin 300387, China. hxxytdw@mail.tjnu.edu.cn.
YuanYuan
Y
Liu
College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecule, Tianjin Normal University, 393 Binshui West Road, Tianjin 300387, China. hxxytdw@mail.tjnu.edu.cn.
Yue
Y
Cao
State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China. cuicm@nankai.edu.cn.
Tianhao
T
Li
State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China. cuicm@nankai.edu.cn.
Hongfan
H
Hu
State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China. cuicm@nankai.edu.cn.
Chunming
C
Cui