| 摘要 |
NEW MATERIAL:A compound expressed by the formula (R<1> and R<2> are 6-14C alkyl; X is anion). USE:A recording layer of optical data-recording media. PREPARATION:Trimethylamine and pyridine are added to a reaction product of 2,7-dimethoxy-1, 4, 5, 8-tetrahydronaphthalene, thiazoles and alkyl p- toluenesulfonate and the mixture is refluxed. Then a compound capable of forming an anion such as sodium perchlorate ad alcohol are added thereto and the mixture is refluxed and then the product is separated and purified. |
