| 摘要 |
<p>Novel ethynyl-terminated aromatic compounds wherein the aromatic component is a benzaldehyde, benzimidazoquinazoline, benzoate, benzeneamine, aryl orthoester, benzotrifluoride. pyrene, anthracene, phenanthrene, phenylbenzimidazole, thiophene, furan, or pyridine are described. …<??>These and prior art ethynyl-terminated aromatic compounds are prepared by a novel process comprising coupling an aromatic halide having a base-sensitive substituent with an end-protected acetylene in the presence of a metal catalyst to form an end-protected arylacetylene, and subsequently removing the end-protecting group. …<??>Typically p-bromobenzaldehyde is reacted with ethynyltrimethylsilane in the presence of triphenylphosphine and palladium acetate. The silane protecting group is removed with potassium carbonate in methanol to provide p-ethynylbenzaldehyde. …<??>The products are useful for the production of ethynyl-terminated aromatic oligomers.</p> |
