申请人:Monsanto Company
公开号:US04442298A1
公开(公告)日:1984-04-10
A phenylethyl substituted dimer of ethylene and maleic anhydride, names 7-phenyloctane-(1,2),(5,6)-dianhydride, is chemically synthesized by (a) alkylating alkyl 2,4-dihalobutyrate with alkyl 2-cyano-3-phenylbutyrate, (b) alkylating the resulting halide condensation product with a carboxylate selected from the group consisting of trialkyl ethane-1,1,2-tricarboxylate and dimethyl cyanoethane-1,2-dicarboxylate, (c) acid hydrolyzing the resulting tetra or pentaester accompanied by decarboxylating, and (d) dehydrating the resulting tetra-acid to yield the desired phenylethyl substituted dimer of ethylene and maleic anhydride, wherein the alkyls in the butyrate and carboxylate ester groups each contain from one to about four carbon atoms and halo is selected from the group consisting of bromo, chloro and iodo. The dimer has anti-tumor and anti-viral properties and can be used in silver halide emulsions.
一种苯乙基取代的乙烯和马来酸酐二聚体,命名为7-苯基辛烷-(1,2),(5,6)-二酐,通过以下化学合成方法制备:(a) 用烷基化剂烷基2,4-二卤丁酸酯与烷基2-氰基-3-苯基丁酸酯进行烷基化反应,(b) 用所得卤代缩合产物与从三烷基乙烷-1,1,2-三羧酸酯和二甲基氰基乙烷-1,2-二羧酸酯组成的羧酸酯中选择的羧酸酯进行烷基化反应,(c) 酸水解所得的四酯或五酯伴随着脱羧反应,以及(d) 脱水处理所得的四羧酸,得到所需的苯乙基取代的乙烯和马来酸酐二聚体,其中丁酸酯和羧酸酯基中的烷基分别含有一到约四个碳原子,卤素选自溴、氯和碘。该二聚体具有抗肿瘤和抗病毒特性,并可用于银卤化物乳剂中。