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1、第5期化學(xué)世界·297·幾種芳香磺酸酯和磺酰胺對(duì)金屬離子的紫外識(shí)別作用王文革,張德春李坦平,李艷花,郝迪(湖南工學(xué)院材料與化學(xué)工程系,湖南衡陽421002)摘要:以4,6一二異戊氧基一1,3一苯二磺酰氯為原料,三乙胺作縛酸劑,二氯甲烷或丙酮作溶劑,合成了4,6一二異戊氧基一1,3一二苯磺酸喹啉一8一酯(2)、4,6-二異戊氧基一1,3一二一(4-烯丙基一2一甲氧基)苯二磺酸酯(3)和4,6一二異戊氧基一1,3一二磺酰二甲基胺基苯(4)。產(chǎn)物結(jié)構(gòu)用IR,HNMR等進(jìn)行了確認(rèn)。利用紫外光譜分析的方法研究了化合物2~4對(duì)Ca抖、Pb豺及
2、部分過渡金屬等20種金屬離子的識(shí)別。結(jié)果發(fā)現(xiàn):化合物2對(duì)Sn顯示出較弱的作用,由于Sn抖和Bi抖協(xié)同作用的影響,在化合物2一Sn的體系中加入Bi抖,紫外吸收光譜在324nm左右形成強(qiáng)烈吸收峰,這說明化合物2對(duì)Bi。顯示優(yōu)于Sn。的較好選擇性;化合物3對(duì)Bi抖顯示出較好的選擇性,在化合物3一Bi抖的體系中加入Sn?;駽u,紫外吸收光譜290~300nm處的吸收峰紅移至322nm左右,并且隨Sn。。濃度增大峰強(qiáng)度增強(qiáng)不顯著;化合物4對(duì)Cu抖顯示出一定的選擇性,在化合物4一Cu抖的體系中加入Bi什,紫外吸收光譜在322nm左右形成強(qiáng)烈吸
3、收峰。關(guān)鍵詞:磺酰胺;磺酸酯;合成;金屬離子識(shí)別中圖分類號(hào):0625文獻(xiàn)標(biāo)志碼:A文章編號(hào):0367-6358(2016)05—0297-06SelectiveUltravioletSpectrumRecognitionTowardMetalCationsofSevera1AromaticSulfonatesandSulfonamidesWANGWen—ge,ZHANGDe—chun,LITan—ping,LIYan—hua,HAODi(DepartmentofMaterials&ChemicalEngineering,Hunan
4、InstituteofTechnology,HunanHengyang421002,China)Abstract:4,6-Di—isopentyloxy-benzene-1,3-disulfonicaciddiquinolin一8一ylester(2),4,6-di—isopentyloxy—benzene一1.3-disulfonicacidbis一(4一allyl一2一methoxy—pheny1)ester(3)and4,6一di—isopentyloxy—benzene一1,3一di(N,N—dimethylsulfona
5、mides)(4)weresynthesizedusing4,6一di—isopentyloxy-benzene一1,3一disulfonyldi—chloridesand8-hydroxyquinoline,4-allyl一2一methoxy—phenolor2,4,6-tris(dimethylaminomethy1)phenolasthestartingmaterials,triethylamineastheacidbindingagent,andacetoneordichloromethaneasthesol—vent.T
6、heproductswerecharacterizedbyIR,HNMRtechniques.Therecoginitionofcompounds2~4forCa抖.PbandsometransitionmetalionswasstudiedwithUVspectrum.Theprimaryresultsshowthattheinteractionbetweencompound2andSn。isweak,andifBi。solutionisaddedintocompound2andSn抖system.a(chǎn)strongabsorpti
7、onpeakat324nmappearsinUVspectrum,showingthatcompound2hasbetterrecognitionabilityforBi。thanSn抖.Compound3alsohasbetterrecognitioncapabilityforBia.a(chǎn)ndifSn。orCu。solutionisaddedintocompound3andBi。system,thestrongabsorptionpeakisredshiftedfrom290~300nmtoca.322nminUVspectrum
8、,andthepeakintensityenhancesinconspicu—OUslywiththeincreasementoftheconcentrationofSn計(jì).Compound4hassomerecognitioncapability