申请人:The Dow Chemical Company
公开号:US05274135A1
公开(公告)日:1993-12-28
A process for preparing a 3- or 4-aminobenzocyclobutene comprises aminating a 3- or 4-halo- or sulfonyloxybenzocyclobutene reactant with an aminating agent by heating at a temperature from about 80.degree. C. to a temperature at which dimerization or oligomerization of a benzocyclobutene reactant or product is a significant side reaction, in the presence of a metal-containing catalyst, for a time sufficient to aminate the halo- or sulfonyloxybenzocyclobutene reactant. In another aspect, this invention relates to a process for making a 3- or 4-phthalimido- or maleimidobenzocyclobutene, comprising reacting a 3- or 4-halobenzocyclobutene reactant with a phthalimide or maleimide compound in the presence of a metal-containing catalyst. The resulting phthalimido- or maleimidobenzocyclobutene can be hydrolyzed to a 3- or 4-aminobenzocyclobutene.
一种制备3-或4-氨基苯并环丁烯的方法包括将3-或4-卤代或磺酰氧基苯并环丁烯反应物与氨化试剂在金属催化剂存在下加热,温度从约80°C升高到苯并环丁烯反应物或产物二聚或寡聚反应成为重要的副反应的温度,反应时间足以使卤代或磺酰氧基苯并环丁烯反应物进行氨基化。在另一个方面,本发明涉及一种制备3-或4-邻苯二酰亚胺或马来酰亚胺苯并环丁烯的方法,包括在金属催化剂存在下,将3-或4-卤代苯并环丁烯反应物与邻苯二酰亚胺或马来酰亚胺化合物反应。所得的邻苯二酰亚胺或马来酰亚胺苯并环丁烯可以水解成3-或4-氨基苯并环丁烯。