| 摘要 |
<p>Compound suitable for forming copolymers and carbon-carbon composites are of formula:- <IMAGE> where -C IDENTICAL CR is in either the meta or para position and where R is selected from the group consisting of: (1) CnH2n+1, where n=1 to 10; (2) C(CH3)2OR'; (3) CO2R'; (4) aryl compounds selected from C6H5, naphthyl, anthryl, phenanthryl, 2-pyridinyl and C6H4-R', where R' is H or CnH2n+1 where n=1 to 10; (5) CONR''H or CONR<''>2, wherein R'' is the same as R' or an aryl compound selected from C6H5, naphthyl, anthryl, phenanthryl, 2-pyridinyl and C6H4R'; (6) H; and (7) trimethylsilyl. These compounds are prepared in high yields by first providing a dihalogenated diphenyl compound, coupling the dihalogenated compound with ethynyltrimethylsilane in the presence of an organometallic catalyst to form a silylated ethynyl terminated diphenyl substituted intermediate compound and subsequently desilylating the intermediate compound to form the following bis(ethynylphenyl) compound.</p> |
