Polarography of some 2,1,3-benzothiadiazoles, benzofurazans, 2,1,3-benzoselenadiazoles, and 3,4-disubstituted and fused 1,2,5-thiadiazoles
作者:E. O. Sherman、S. M. Lambert、K. Pilgram
DOI:10.1002/jhet.5570110519
日期:1974.10
platinum electrode for 2,1,3-benzo(group VI)diazoles, and 3,4-disubstituted and fused 1,2,5-thiadiazoles. The derivatives studied contained alkyl, phenyl, bromo, chloro, cyano, nitro, methylsulfonyl, and trifluoromethylsulfonyl groups. All ring systems and their derivatives are reversibly reduced initially in a one-electron step, to their respective radical anion, but the nitro and bromo derivatives are
已经在乙腈溶液中的汞和铂电极上测定了2,1,3-苯并(VI族)二唑和3,4-二取代和稠合的1,2,5-噻二唑的氧化还原行为。研究的衍生物包含烷基,苯基,溴,氯,氰基,硝基,甲基磺酰基和三氟甲基磺酰基。最初,所有环系统及其衍生物在一个电子步骤中可逆地还原为它们各自的自由基阴离子,但是硝基和溴衍生物优先在取代基团上还原。随着取代基的吸电子能力和取代基数目的增加,发生自由基阴离子产生的电势变得更阳极。