Zirconium Complexes with Cyclopentadienyl Ligands Involving Fused a Thiophene Fragment
作者:Alexey N. Ryabov、Denis V. Gribkov、Vyatcheslav V. Izmer、Alexander Z. Voskoboynikov
DOI:10.1021/om010810z
日期:2002.7.1
(11), 1,2-dimethyl-3H-cyclopenta[b][1]benzothiophene (14). After a deprotonation of 2, 4, 11, and 14 with n-BuLi, followed by treatment of the resulting lithium salts with (η5-C5Me5)ZrCl3, complexes (η5-Cp‘)(η5-C5Me5)ZrCl2 were obtained. The ligand 6 gave a mixture of undesirable products instead of the respective metallocene. Two of them were isolated and turned out to be the polynuclear hydride complex
合成了以下具有稠合噻吩和苯并噻吩片段的环戊二烯(Cp'H):4,5-二甲基-6 H-环戊[ b ]噻吩(2),5,6-二甲基-4 H-环戊[ b ]噻吩(4),1,3,5-三甲基-4 H-环戊[ c ]噻吩(6),2-甲基-1(和3)H-环戊[ b ] [1]噻吩(9),2,3-二甲基-1 H-环戊[ b ] [1]苯并噻吩(11),1,2-二甲基-3 H-环戊[ b ] [1]苯并噻吩(14)。的去质子化后2,4,11,和14与n-BuLi,接着处理所得到的锂盐与(η 5 -C 5我5)的ZrCl 3,复合物(η 5 -Cp')(η 5 -获得C 5 Me 5)ZrCl 2。配体6给出了不希望的产物的混合物,而不是相应的茂金属。分离出其中两个,结果是多核氢化物络合物(Cp * Zr)(μ-H)(μ-Cl)2(Cp * ZrCl)} 2(μ-Cl)6李2和双核配合物含有一个不寻常的桥接双[1