4,6-二正丁氧基-1,3-二苯磺酸喹啉-8-酯的合成及其对Sn^(2+)和Bi^(3+)的识别作用

Synthesis of 4,6-bis-( n-butoxy) benzene-1,3-disulfonic acid diquinolin-8-yl ester and selective recognition of Sn^(2+) and Bi^(3+)

以4,6-二正丁氧基-1,3-苯二磺酰氯和8-羟基喹啉为原料,三乙胺作缚酸剂,丙酮作溶剂,合成了4,6-二正丁氧基-1,3-二苯磺酸喹啉-8-酯(化合物2),研究了产物对Ca2+、Pb2+及部分过渡金属等20种金属离子的识别。结果表明,产物的DMF溶液的最大紫外吸收峰在265 nm处,其对Sn2+显示出一定的选择性,由于Sn2+和Bi3+协同作用的影响,在化合物2-Sn2+的体系中加入Bi3+,紫外吸收光谱在324 nm左右形成强烈吸收峰,这说明对Bi3+显示出优于Sn2+的较好选择性。

4 ,6-Bls-（ n-butoxy ）benzene-1 ,3-dlsulfonlc acld dlqulnolln-8-yl ester compound（ 2 ）was syn-theslzed Using 4,6-bls-（n-butoxy）benzene-1,3-dlsulfonyl dlchlorldes and 8-hydroxyqulnollne as the start-lng materlals,trlethylamlne as the acld blndlng agent,and acetone as the solvent. The recognltlon of 4,6-bls-（n-butoxy）benzene-1,3-dlsulfonlc acld dlqulnolln-8-yl ester for Ca2＋,Pb2＋and some transltlon metal lons were studled. The results showed that the absorptlon peak of compound（2）at 265 nm and lt has some recognltlon capabllltles for Sn2＋,and because of the synergy lnfluence of the Sn2＋and Bl3＋,lf Bl3＋ solu-tlon ls added lnto compound（2）and Sn2＋system,the strong absorptlon peak at 324 nm comes lnto belng ln UV spectroscopy,thls showed that compound（2）has the better recognltlon abllltles for Bl3＋than Sn2＋.