Synthesis and Acid Catalytic Activity of 1,5,3,7-Diazadiphosphocine-1,5-dicarboxylic Acids
作者:Yong Gyun Lee、Sung Tae Kim、Dai Il Jung、Jung Tai Hanh
DOI:10.14233/ajchem.2015.18518
日期:——
In order to synthesize new bioactive sompounds and contrasting agents, reactions of amino acids (glycine, aspartic acid and glutamic acid) with para formaldehyde and hypophosphorous acid were executed. Products are 3,7-dihydroxy-3,7-dioxoperhydro-1,5,3,7-diazadiphos-phocine-1,5-diacetic acid (4a), 2-[5-(1,2-dicarboxyethyl)-3,7-dihydroxy-3,7-dioxoperhydro-diazadiphosphocine-1-yl]-succinic acid (4b) and 3,7-dihydroxy-3,7-dioxoperhydro-1,5,3,7-diazadiphosphocine-1,5-di-(2-glutaric acid) (4c). As shown in Table-1, the reactions of 4a-c in presence of acid catalysts (all 100 % GC yields) gave only 8-phenyl-8-azabicyclo[3.2.1]octan-3-one (5) (4a; pH (1M) = 0.17, 4b; pH (1M) = 0.15, 4c; pH (1M) = 0.16). In case of inorganic acid catalysts, 8-phenyl-8-azabicyclo[3.2.1]octan-3-one (5) and N-phenyl pyrrole (6) (HCl: 5 = 89.4 and 6 = 10.3 %, H2SO4; 5 = 94.4 and 6 = 5.5 %, CH3COOH: 5 = 13 and 6 = 7.8 %, citric acid: 5 = 80.6 and 6 = 18.7 %) were synthesized. Because of selective acid catalytic ability of 4a-c, we will try reactivity studies as acid catalysts of 4a-c about all acid catalytic reactions.
为了合成新的
生物活性化合物和对比剂,研究人员对
氨基酸(甘
氨酸、天门冬
氨酸和谷
氨酸)与对位
甲醛和
次磷酸进行了反应。2-[5-(1,2-二羧乙基)-3,7-二氧代过氢-3,7-二氮二
磷杂环辛-1-基]-
丁二酸(4b)和 3,7-二羟基-3,7-二氧代过氢-1,5,3,7-二氮二
磷杂环辛-1,5-二(2-
戊二酸)(4c)。如表-1 所示,4a-c 在酸催化剂存在下的反应(气相色谱产率均为 100%)只得到 8-苯基-8-氮杂
双环[3.2.1]辛烷-3-酮(5)(4a;pH(1M)= 0.17,4b;pH(1M)= 0.15,4c;pH(1M)= 0.16)。在
无机酸催化剂方面,合成了 8-苯基-8-氮杂
双环[3.2.1]辛烷-3-酮 (5) 和 N-苯基
吡咯 (6)(
盐酸:5 = 89.4 和 6 = 10.3 %;
硫酸氢盐;5 = 94.4 和 6 = 5.5 %;CH3COOH:5 = 13 和 6 = 7.8 %;
柠檬酸:5 = 80.6 和 6 = 18.7 %)。由于 4a-c 具有选择性酸催化能力,我们将尝试用 4a-c 作为酸催化剂对所有酸催化反应进行反应性研究。