| 摘要 |
PURPOSE:To carry out the oligomerization of an alkenyl- or alkylidenenorbornene, economically, by using a catalyst comprising a combination of an organic alkali metal compound with a specific complexing agent such as a substituted polymethylenediamine, substituted polyethylene-polyamine, etc. CONSTITUTION:The dimer of the compound of formula III or formula IV (R1-R4 are H or CH3) useful especially as a reactive plasticizer, etc. is produced economically by oligomerizing the compound preferably at 95-170 deg.C, in the presence of a binary catalyst comprising a combination of (A) an organic alkali metal compound (the alkali metal is Na and/or K) and (B) one or more complexing agents selected from (i) the compound of formula I (n is integer of >=2; R1-R4 are alkyl, cycloalkyl, aryl or aralkyl), (ii) the compound of formula IIand (iii) triethylenediamine. High dimerization activity can be attained by using 0.1-5mol-equivalent, especially 0.5-2mol-equivalent of the complexing agent based on the organic alkali metal compound. |
