Lithium Aluminate Complexes and Alumoles from 1,4-Dilithio-1,3-Butadienes and AlEt<sub>2</sub>Cl
作者:Yongliang Zhang、Junnian Wei、Wen-Xiong Zhang、Zhenfeng Xi
DOI:10.1021/acs.inorgchem.5b01551
日期:2015.11.16
A series of lithium aluminate complexes and alumoles were synthesized from 1,4-dilithio-1,3-butadienes 1 and AlEt2Cl. Their structures were characterized using single-crystal X-ray structural analysis and NMR spectroscopy. The structure of the lithium aluminate complex 2-TMEDA showed that the Al atom adopted a tetra-coordinated mode bonded with two butadienyl Csp2 atoms and two ethyl Csp3 atoms. The
Aromatic Tetralithiodigalloles with a Ga–Ga Bond: Synthesis and Structural Characterization
作者:Yongliang Zhang、Yue Chi、Junnian Wei、Qi Yang、Zhenqiang Yang、Hui Chen、Ruina Yang、Wen-Xiong Zhang、Zhenfeng Xi
DOI:10.1021/acs.organomet.7b00447
日期:2017.8.14
Aromatic 1,1,2,2-tetralithiodigalloles 5 with a Ga–Ga bond were realized. Reaction of 1,4-dilithio-1,3-butadienes 6 with 0.5 equiv of GaCl3 afforded lithium spirogallane ate complexes 7 in excellent isolated yields. Reduction of the above ate complexes 7 with an excess amount of lithium generated the 1,1,2,2-tetralithiodigalloles 5 in moderate isolated yields. The structures of compounds 5 and 7 were
Spiro Metalla-aromatics of Pd, Pt, and Rh: Synthesis and Characterization
作者:Yongliang Zhang、Junnian Wei、Yue Chi、Xuan Zhang、Wen-Xiong Zhang、Zhenfeng Xi
DOI:10.1021/jacs.7b02039
日期:2017.4.12
exciting aromatic systems, therefore, continues to drive research in this area. Herein we report the synthesis and characterization of spiro metalla-aromatics, in which the transition metal (Pd, Pt, or Rh) is the spiro atom, that cross-conjugates two aromatic five-membered metallacycles. These spiro metalla-aromatics tend to take square planar geometries, with the dihedral angle being influenced by
Tetralithio Metalla‐aromatics with Two Independent Perpendicular Dilithio Aromatic Rings Spiro‐fused by One Manganese Atom
作者:Yongliang Zhang、Junnian Wei、Miaomiao Zhu、Yue Chi、Wen‐Xiong Zhang、Shengfa Ye、Zhenfeng Xi
DOI:10.1002/anie.201904681
日期:2019.7.8
a class of unprecedented aromatic structures 2: metalla‐aromatics with two independent and perpendicular aromaticrings spiro‐fused by a transition‐metal spiro atom, of which their corresponding organic analogues are impossible. Tetralithio spiro manganacycles 2 are readily synthesized from 1,4‐dilithio‐1,3‐butadienes 1 and MnCl2 in the presence of lithium. The aromaticity of 2 is supported by experimental
Reaction of Dilithio Reagents with PhSiH<sub>3</sub>: Formation of Siloles and 3-Silacyclopentenes
作者:Baosheng Wei、Heng Li、Jianhao Yin、Wen-Xiong Zhang、Zhenfeng Xi
DOI:10.1021/acs.joc.5b01595
日期:2015.9.4
The reaction chemistry between 1,4-dilithio-1,3-butadienes (dilithio reagents for short) and PhSiH3 has been investigated. Direct substitution of two hydride ions from PhSiH3 with the dilithio reagents led to multisubstituted siloles (silacyclopentadienes) in diethyl ether solution, with the concomitant generation of LiH. When THF was used as the solvent, the reaction between PhSiH3 and 1,4-bis(silyl)