申请人:Sumitomo Chemical Co., Limited
公开号:US06403852B1
公开(公告)日:2002-06-11
There are provided a process for producing an alkenyl-substituted aromatic hydrocarbon by alkenylation of an alkyl-substituted aromatic hydrocarbon having a hydrogen atom at the &agr;-position of a side chain thereof with a conjugated diene, using a catalyst obtained by the action of an alkali metal compound and an alkali metal or an alkali metal hydroxide on an metal oxide selected from alumina or hydrotalcite by heating in a specific temperature range; and a process for producing an alkenyl-substituted aromatic hydrocarbon, characterized in that the reaction is carried out in the presence of an alkylaminopyridine of formula (1):
wherein R1 is hydrogen or C1-C6 lower alkyl, and R1 is C1-C6 lower alkyl, using as a catalyst, Na metal, K metal, or an alloy thereof, or a catalyst carrying any of them on an inorganic compound support, or a catalyst obtained by the action of an alkali metal compound and alkali metal or an alkali metal hydride on a metal oxide selected from alumina, alkaline earth metal oxides, hydrotalcite, silica-alumina, or zeolite by heating in a temperature range of 70° C. to 700° C.
提供了一种生产烯基取代芳香烃的方法,通过使用由碱金属化合物和碱金属或碱金属氢氧化物在氧化铝或水滑石中选择的金属氧化物的作用而得到的催化剂,在特定温度范围内加热,将具有侧链α-位置上氢原子的烷基取代芳香烃与共轭二烯烃进行烯基化。另外提供了一种生产烯基取代芳香烃的方法,其特征在于在存在式(1)的烷基氨基吡啶的情况下进行反应:其中R1为氢或C1-C6低碳烷基,R1为C1-C6低碳烷基,使用Na金属、K金属或其合金作为催化剂,或者在无机化合物载体上携带它们的催化剂,或者通过碱金属化合物和碱金属或碱金属氢化物对氧化铝、碱土金属氧化物、水滑石、硅铝酸盐或沸石中选择的金属氧化物在70°C至700°C的温度范围内加热而得到的催化剂。