作者:Sung W. Rhee、Elmer J. Reist、Marie T. Rock
DOI:10.1002/jlcr.2580340210
日期:1994.2
14C-labeled polyanhydride copolymers [(20:80/1,3-bis)(p-carboxyphenoxy)-propane(CPP):sebacic acid (SA)] (7 and 13) were synthesized according to schemes I and II: 14C-labeled sebacic acid (2,9-14C2) (5) and 14C-labeled CPP 1,3-bis(p-carboxyphenoxy)-propane (labeled at C-1, C-3 of the propyl group) (11) were transformed to the corresponding mixed anhydrides (6 and 12) as prepolymers respectively by reaction with acetic anhydride. The labeled mixed anhydride prepolymers (6 and 12) were condensed with unlabeled counter-prepolymers (12′ and 6′) to give the labeled polyanhydride copolymers (7 and 13). The labeled copolymers (7 and 13) were identified and characterized by gel permeation chromatography (GPC).
按照方案 I 和 II 合成了 14C 标记的聚酸酐共聚物[(20:80/1,3-双)(对羧基苯氧基)-丙烷(CPP):癸二酸(SA)](7 和 13):14C 标记的癸二酸(2,9-14C2)(5)和 14C 标记的 CPP 1,3-双(对羧基苯氧基)-丙烷(标记在丙基的 C-1、C-3 处)(11)通过与醋酸酐反应分别转化为相应的混合酸酐预聚物(6 和 12)。标记的混合酸酐预聚物(6 和 12)与未标记的对位预聚物(12′和 6′)缩合,得到标记的聚酸酐共聚物(7 和 13)。通过凝胶渗透色谱法(GPC)对标记的共聚物(7 和 13)进行了鉴定和表征。