A quasi-reversible reduction peak of a fentanyl derivative DNPME is found by cyclic voltammetry at Hg electrode. E_(pc)=-1.58 V (vs. Ag/AgCl). The cathodic peak shows adsorptive characteristics. The adsorbed species i...A quasi-reversible reduction peak of a fentanyl derivative DNPME is found by cyclic voltammetry at Hg electrode. E_(pc)=-1.58 V (vs. Ag/AgCl). The cathodic peak shows adsorptive characteristics. The adsorbed species is DNPME neutral molecule. The method for measuring trace amount of DNPME by adsorptive stripping voltammetry is established.展开更多
Electrochemical oxidation of hydroquinone（1a） has been studied in the presence of 6-methyl-2-thiouracil（3a） and 6-propyl-2-thiouracil（3b） as nucleophiles in a DMF/buffer mixture,using cyclic voltammetry and cont...Electrochemical oxidation of hydroquinone（1a） has been studied in the presence of 6-methyl-2-thiouracil（3a） and 6-propyl-2-thiouracil（3b） as nucleophiles in a DMF/buffer mixture,using cyclic voltammetry and controlled-potential coulometry.The results indicated that the p-quinone（2a） derived from 1a participates in a 1 4-Michael addition reaction with the thiouracil derivatives（3a–b） to form the corresponding hydroquinonethioether derivatives（6a–6b）.The electrosynthesis of these compounds（6a–b） has been successfully performed on carbon rod electrodes in an undivided cell in good yield and purity.展开更多
基金This work was supported by the National Natural Science Foundation of China
文摘A quasi-reversible reduction peak of a fentanyl derivative DNPME is found by cyclic voltammetry at Hg electrode. E_(pc)=-1.58 V (vs. Ag/AgCl). The cathodic peak shows adsorptive characteristics. The adsorbed species is DNPME neutral molecule. The method for measuring trace amount of DNPME by adsorptive stripping voltammetry is established.
基金Semnan University Research Council for financial supports of this work
文摘Electrochemical oxidation of hydroquinone（1a） has been studied in the presence of 6-methyl-2-thiouracil（3a） and 6-propyl-2-thiouracil（3b） as nucleophiles in a DMF/buffer mixture,using cyclic voltammetry and controlled-potential coulometry.The results indicated that the p-quinone（2a） derived from 1a participates in a 1 4-Michael addition reaction with the thiouracil derivatives（3a–b） to form the corresponding hydroquinonethioether derivatives（6a–6b）.The electrosynthesis of these compounds（6a–b） has been successfully performed on carbon rod electrodes in an undivided cell in good yield and purity.
