Preparation and characterisation of some dimeric η<sup>2</sup>-diyne complexes of cobalt
作者:Catherine E. Housecroft、Brian F. G. Johnson、Muhammad S. Khan、Jack Lewis、Paul R. Raithby、Michael E. Robson、Della A. Wilkinson
DOI:10.1039/dt9920003171
日期:——
The organometallic dimers [Co2(CO)6}2(diyne)](diyne = HC2C6H4C2H 1, HC2C6H4C6H4C2H 2, HC2C6H4CH2C6H4C2H 3, Me3SiC2C6H4C6H4C2SiMe34, Me3SiC2C6H4CH2C6H4C2SiMe35 or Me3SnC2C6H4C6H4C2SnMe36) have been synthesised from the reaction of octacarbonyldicobalt(0), [Co2(CO)8], with the appropriate diyne. The products have been characterised by infrared spectroscopy, electron impact (El) mass spectrometry, microanalysis
有机金属二聚体[Co 2(CO)6 } 2(二炔)](二炔= HC 2 C 6 H 4 C 2 H 1,HC 2 C 6 H 4 C 6 H 4 C 2 H 2,HC 2 C 6 H 4 CH 2 C 6 H 4 C 2 H 3,Me 3 SiC 2 C 6 H 4 C 6H 4 C 2 SiMe 3 4,Me 3 SiC 2 C 6 H 4 CH 2 C 6 H 4 C 2 SiMe 3 5或Me 3 SnC 2 C 6 H 4 C 6 H 4 C 2 SnMe 3 6)八羰基二钴(0),[Co 2(CO)8的反应],加上适当的二炔。产品已通过红外光谱,电子冲击(El)质谱,微量分析和1 H NMR光谱进行了表征。复合物1,3和4已经被表征由单晶X射线晶体学。在所有情况下,二炔的两个“炔”片段均与Co 2(CO)6片段键合,CC载体基本上垂直于Co-Co载体。使用晶体学确定的二聚体1坐
Diethynylated diphenyl hexafluoropropanes
申请人:Hughes Aircraft Company
公开号:US04814472A1
公开(公告)日:1989-03-21
There are disclosed diethynylated diphenyl hexafluoropropane compounds, which are suitable for forming copolymers and carbon-carbon composites. These compounds are prepared in high yields by first providing a dihalogenated diphenyl hexafluoropropane compound, coupling the dihalogenated compound with ethynyltrimethylsilane in the presence of an organometallic catalyst to form a silylated ethynyl terminated diphenyl substituted compound and subsequently desilylating the compound to form the desired diethynylated diphenyl hexafluoropropane compound.
Bis(ethynylphenyl) compounds are prepared by an improved synthesis process which increases yield and is suitable for large scale synthesis operations. Aromatic dianilines are diazotized to form aromatic halides that are subsequently coupled with an end-protecting group having acetylenic moieties. The end-protecting groups are subsequently removed leaving the desired diethynyl derivative in quantitative yields.