| 摘要 |
Compounds of the formula I or (I′), wherein R1 and R′1 for example are hydrogen, C3-C8cycloalkyl or C1-C12alkyl, R2 and R2′ for example are hydrogen; unsubstituted C1-C20alkyl or substituted C1-C20alkyl; and R8 and R9 for example are hydrogen, C1-C12alkyl which optionally is substituted, or phenyl which optionally is substituted; exhibit an unexpectedly good performance in photopolymerization reactions.
|
