| 摘要 |
NEW MATERIAL:The cyclic tricalicene derivative of formula I (R<1> and R<2> are H or lower alkyl). USE:Useful e.g. as an optical recording material in information and electronic material fields. PREPARATION:The compound of formula I can be produced by reacting the compound of formula II with an amine e.g. in chloroform at room temperature for about 24hr. |
